The use of high-pressure hose size

When the high-pressure hose be withheld , will always produce withhold too tight or too loose phenomenon, and these phenomena often lead to adverse effects of high pressure hose . Today we say it is the size of the amount withheld would it have any effect on the high-pressure hydraulic hose assemblys . We carried out by the following detailed understanding .Withhold the amount and rate of withholding high pressure hose and fittings assembly when the improper or joint structure and material , size selection is unreasonable, can lead to high pressure hydraulic hose fitting and fittings withholding too tight or too loose will cause early damage to the joints .
When assembled , if the withholding amount is too small, that is between the high pressure hose connector and cut through the loose , high pressure hose there may emerge in the role of oil in the early use from the joint ; If withholding is too large, then the connector and hydraulic hose fittings too tight , easily lead to hose inner being localized damage, cracks , directly into the high-pressure oil from the ruptured steel layer , and then he went to the wire along the gap between the spray coat tails , or has fled somewhere along the wire layer build up , so that the outer layer of plastic to produce drum kits and even rupture . Hoses and connectors in the assembly, if the withholding too fast, likely to cause damage to the plastic layer and the wire break, so that premature failure of the hose in use .
The above information is very detailed description of the effect of the size of the amount withheld for the use of high-pressure hose produced , so we need considerable attention when using this withholding his dosage size is accurate, whether the mutation will produce high pressure hose , etc. problems should close attention.

The role of the metal hose

Metal hose used for automated meter signal wire protection tube and instrument meter circuit protection tube for protection, the protection of precision optical ruler, protecting the sensor lines threading stainless steel metal hydraulic adapter, metal hose electrical protection; stainless hydraulic hoses, softness is good, dustproof, waterproof, anti-oil, anti-rust; anti-wear, and provide some shielding effect. Sensing for precision optical ruler of circuit protection, industrial sensor circuit protection. Has good flexibility, corrosion resistance, high temperature resistance, wear resistance, tensile strength.

Shrink cable joint processing preventive measures and treatment

After stripping the cable insulation , the main application of fine sandpaper carefully polished surface of the insulation layer , making it smooth and no marks, no semiconductor residual points . The insulation must be cleaned with a cleaning solvent shield direction from the core to the semiconductor , do not use the shield layer in contact with the semiconductor cleaning paper to clean the main insulation layer on the surface .After crimping wire core , application file, sandpaper carefully polished to eliminate edges and tip , and pay attention to metallic particles may not remain on the surface of the insulating layer .Special attention should be in the process of making the cable connector to keep clean , and should try to shorten production time , after stripping the cable cut , exposed in the air longer, the possibility of invasion of impurities , water , gas , dust, etc. , the greater , thus impact of joint quality . Therefore required before construction to do all the preparatory work to ensure the production of non-stop , go.
    Before making hydraulic hose fittingto carefully check the cable accessories and cable facilities, so as to strictly control the amount of interference shrink silicone rubber insulating sleeve , to ensure that they have sufficient grip force , close contact with the interface , there is no gap .
    Semiconductor adhesive tape were wrapped in shrink after each phase of silicone rubber composite insulating sleeve two port. Thus , both the silicone rubber outer casing outside the semiconductor layer and semiconductor XLPE cable shield good contact , but also play a role in the axial waterproof .
    Surrounding the self-adhesive waterproof tape, shrink Hydraulic pipe fittings seal is proof key to a semi- joint overlap method from one end to the other end wrapped and then wrapped in the opposite direction from one end to the starting side, wrapped in two layers. After each wrapped with both hands clasped in turn again, to make it better bonding. Be sure to pull when properly wrapped , so tightly wrapped seamless .

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

factors that affect the use of the hose assembly

Many factors will affect the use of the hose assembly . The first is the size of the hose . Inner diameter of the hose to the right, if it is too small, will affect efficiency. If the inside diameter is too large, will affect the overall system performance of the play. Therefore , it is important to select the appropriate inner diameter . Second ,hydraulic adapter  will also affect the temperature range of use. If the hydraulic hose working environment temperature exceeds the specified range , then the hydraulic hose pressure capacity will thus be greatly reduced. Experts suggest that if the high or low temperature working environment , should be put on the hydraulic hydraulic hose fitting jacket . In addition to the above two factors , the use of hydraulic hose assembly Hose working pressure is also affected by the impact stress and fatigue life , impact bending radius and chemical compatibility and other factors.Hydraulic hose assembly in our lives is very wide, in the mining industry , agriculture and industrial sectors have a lot of use . It is transmitted through water and gas or oil substance hydraulic power to ensure adequate fluid energy during operation.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

By utilizing high pressure hose and connector assembly and pressing speed selection

By utilizing high pressure hose and connector assembly and pressing speed selection, or joint structure and material, size selection is not reasonable, can lead to high pressure hose and fittings withhold too tight or too loose, can cause joint damage early.The assembly, if the withholding amount is too small, the joint and the high pressure hose pressure too loose, under the action of oil pressure hose at the initial stage of use is likely to emerge from hose fittingthe joint; if the withholding amount is too large, joint and hose pressure too tight, easily lead to hose inner layer by local damage, crack, high pressure oil from the ruptured directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of hydraulic tube fittingsdrum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use.
The above information is very detailed description of the effect of the size of the withholding amount produced using high-pressure hose, so we use the press to considerable attention, he dose size is accurate, if the high pressure hose mutate and so on should pay close attention.

Copper brazed directly Problems

Direct Copper brazing mainly two: the need to use corrosive aluminum brazing agent to remove the oxide film, moisture absorption flux residues form an electrolyte constituting the strong corrosive; aluminum, copper atoms diffuse faster, easier plastic Hydraulic adaptersconnector in the package forming fusible eutectic brittle, leading to joint strength is low, and the electrode potential than the electrode potential is high, prone to intergranular corrosion. Thus, aluminum and copper is generally believed that direct brazing is difficult. In order to prevent oxidation of solder joints, preferably in an inert atmosphere, the production of furnace, heating by hydraulic hose fittingresistance heating or flame brazing.
In order to avoid the formation of aluminum and copper brittle compounds, aluminum and copper atoms necessary to avoid direct contact, and to avoid corrosive flux caused by corrosion problems, can be coated on the surface layer of metal (such as nickel), and then with Brazed , to avoid the formation of aluminum and copper brittle compound, but also can be used corrosive or non-corrosive flux, thus increasing the joint strength and corrosion resistance.

Pack plastic hose connector installation and application

Plastic coated metal hose is mainly used for the production, processing cable protection. Because plastic coated metal hydraulic hose assemblys with light weight, good flexibility and strength of the connection accessories, electrical properties and oil, splash water and other features, so often widely used in electric power, chemical industry, metallurgy, light industry, machinery and other industries. hydraulic hose fittings plastic bag purpose is to protect the wire and cable and insulation, waterproof, can increase the cable bend beautiful.Although compressible metal hose can stretch, but if you do not install the correct position, it will soon break, reduce the service life. Hose plastic bag selection, reference should be corrosion hose material machines and corrugated plastic coated metal hose DN, use, the first cable wires through the pipes, matched with the corresponding model DPJ type connector that available.

High pressure hose for the oil and rubber inner wall

High pressure hose for the oil and rubber inner wall , in the middle of braided steel wire ( steel braided hose ) or winding wire ( wire winding hose ) . Poor quality of the hose will appear : plastic wall of uneven thickness ; steel braided too tight ( wire stroke is small ) , too loose ( steel travel large ) or wire root too few ;hydraulic ferrule pressurized deformation ( elongation , shortening or bending deformation ) larger ( national standard steel stroke control of plus or minus 3 ) ; airtight plastic outer lead wire corrosion poor ( main manifestations : Lu steel ) ; inner plastic seal is poor leaving the high pressure oil easily into wire layer ; adhesion layer and layer of wires inadequate . The above conditions can cause hydraulic hosesto withstand reduced, eventually appears at the wall of the weak burst. Especially in the inner layer , poor air tightness , then a pressure, it leaks, then the pressure directly burst.

High oil and high-pressure hose

High oil and high-pressure hoseSuch highhydraulic tube fittings , mainly used in construction machinery , the use of high strength , high frequency . Strong corrosion resistance and pressure resistance . We can see a lot of construction vehicles, especially excavators, particularly evident , it is now everywhere, not only that, the excavator head is getting bigger , the job has become increasingly pursuit of high intensity , heavy , frequent trend.

Micro oil-resistant high-pressure hose .

Micro oil-resistant high-pressure hose .
  Such high pressure hose , mainly used in coal mine hydraulic bracket , dosage particularly large, some large mines , the amount to tens of millions a year , and say it is very terrible , there are times , I Inner Mongolia, in a large warehouse to see mine that a lot of hydraulic hose assemblys, looks like a hill heap. In particular, some caliber 152 , and 204 largehydraulic hoses , each root to all kind of scary to see the value of money. That fight was convinced that this market is quite large . Secondly, in terms of performance and practical with low agricultural equipment.

High pressure hose and fittings assembly withhold the amount and mode selection improperly withheld

High pressure hose and fittings assembly and withhold the amount of the withholding way inappropriate choice . Or joint structure, material , size selection is unreasonable, can lead to pressure hose and fittings too tight or too loose , causing early damage joints . Assembly , if the withholding amount is too small , that withhold joints between the weight of too loose with the hose when under the effect of the hydraulic hose assemblys during the initial period there may emerge from the joint ; withheld if excessive , then withhold joints and hose too tight , easily lead to the hose inner layer of localized damage , deformation, cracks , high pressure oil from the weak rupture directly into the layer of wires , and then he went along the gap between the wire coat tail ejected , or along the wires of the layer has been somewhere he went to build up , so that the outer plastic drum kits produced even rupture . Hose and connectors in the assembly, if the withholding too fast, easy to cause damage to the inner rubber layer and wire breakage , so that premature failure of the hose in use . In addition , the joint design is unreasonable , jerry , processing of poor quality, can also cause damage to the inner glue ; if improperly fitting material selection , not reach high pressure hose assembly requirements. Will shorten the life of high pressure hose .

Selection of high-pressure hose assembly

Hose sheathing installed in the main hydraulic hose, wire, cable and other products outside. Its function is reinforced hydraulic hose, wire, cable and other interior products, wear-resistant, antistatic properties, in a variety of harsh environments such as inside of Jic hydraulic fittings hose products play a security role.hydraulic fittings, wire, cable and other product installation screw protective cover not only improve the aesthetics, but also can extend the life of the product inside. Retaining spring with traditional metal products, rubber hose protector easy to install and better wear resistance; anti-aging, corrosion resistance strong; more powerful hydraulic hoses, wires, cables and other products for anti-aging and anti-surface friction protection; has more excellent, more convenient, more environmentally friendly energy-saving effect.

Card sets of pipe joints assembly

( A ) . Preloaded ① fittings fittings fittings fittings of the most important aspects of pre-installed , directly affects the reliability of the seal . Generally require a dedicated preheater . Small diameter connector can be pre-installed in a vise . In practice, with a connector as the parent , the nut , ferrule onto the tube can be pressed . There are card sets straight couplings , sleeve type end through turn heads, ferrule tube fittings and other types . I found that even in the same factory shipment , these types of connector body tapered hole depth is often not the same , the result is caused by a leak , and this problem is often overlooked. The correct approach is , the pipe end what kind of connector body connection ,Jic hydraulic fittingscorresponding connection terminal is preloaded with the same type of connector , so to avoid possible leakage problems . ② pipe end should be flush . After sawing the pipe should be flush grinding wheel and hydraulic hose assemblystools , and deburring , cleaning with high-pressure air to blow before use. ③ pre-installed , you should try to keep the tube and the coaxial connector body , if the pipe deflection is too large will cause seal failure. ④ preloaded force should not be too large so that the ferrule tube embedded in the outer wall just inside the edge , card sets shall have no deformation . During pipeline connection, then the provisions of the tightening force assembled . ф6-1 card sets tightening force is 64-1 15n, 16фmmr 259n, ф18mm for 450n. If the pre- deformed when the card holder will lose the seal.
( Two ) . Prohibit adding sealant filler. It was sealed in order to achieve better results, ferrules, apply sealant , sealant was the result into the hydraulic system , hydraulic tube fittings components causing blockage damping hole fault .
( III). Connecting pipe should be sufficient deformation of the tube margin , to prevent the tube subjected to tensile strength .
( Four ) . Connecting pipe should avoid subjecting it to lateral forces , lateral forces caused Mifengbuyan over the General Assembly .
( Five ) . Connecting pipe should be a good one , to avoid multiple disassemble , otherwise it will seal performance deteriorated.

Fittings prevention and installation methods

Fittings prevention and installation methods In the hydraulic system , both the metal pipe fitting , or hose fittings , there are prone to leakage problems . For fittings fittings fittings fittings, mostly due to pipeline subject to greater external force or impact force, the card sets loose or deformed face caused by leaking pipe , you should check whether the card holder out of round , edge whether the defect , Hydraulic pipe fittings end is intact and nut, compression level , etc., while also eliminating pipeline force. For flared fittings, mostly due to excessive flaring , quality, undesirable or multiple demolition , resulting in flared cracks or deformation caused by leaks , then you can be re- flared front truncated . If you use a malehydraulic hoses and female cone top pressure seal , the leakage is mostly due to two cone damage, available on the cone abrasive grit grinding . In some with "о" or outer -ring face seal by the occasion , the leakage following reasons : "о" ring aging or deformation caused by leakage ; "о" ring assembly is not in place , so that the two plane connection when pressure is uneven or "о" ring is cut resulting in leakage.

Flared fittings Appearance process

Appearance of the product is also very important, flared fittings, too. Rough coarse hair hose during use is bring a lot of inconvenience, such as glitches, injured his hand how to do, affecting the appearance of the new factory, the customer that the product is not worth the price of how to do, export expansion pipe joints products, foreign clients do not recognize how to do, there will be many complicated problems. Therefore, we should pay attention to the appearance of products, customers see first is the appearance, so we handle flared fittings appearance.hydraulic fittings appearance processing recommendations are as follows:
1, the hoses in polishing, painting problems when handling.
2, tube hydraulic flanges hinge bolt final polishing, pickling, etc.
3, hydraulic flange welding process technical problems.
4, stainless steel hose problems during the packaging process.
5, and other related operations scratching and so on.

Welded pipe joints for oil pipeline system for the medium

Welded pipe joints Uses and characteristics junction 1 . Welded pipe joints Uses: Welded pipe joints for oil as the medium of piping systems, piping systems for water and air pressure are also used . Working pressure of less than or equal 32Mpa.2. Hydraulic pipe fittings : welded pipe joints has a simple structure , easy to manufacture , sealing , etc., but when installing large welding , welding quality requirements .3 . welded pipe joints structure: welded pipe joints which consists of fitting body nuts and takeover components. took over the joint between the body and the O- ring seal when screwed into the body when the connector body , metric fine thread and cone pattern. and the use of combined sealing gaskets. takeover pipes and piping systems welding hydraulic fittings manufacturing standards 1 , for fluid power and general use metal fittings O-ring hydraulic tube fittings 2 plane , cone seal welded straight couplings 3 , cone seal welded through 55 ° non- sealed tube threaded pipe joint 4 , cone seal welded through 55 ° sealing pipe thread fittings 5 , cone seal welded through 60 ° sealing pipe thread fittings 6 , 90 ° cone seal welded elbow

Metal hose is an important engineering technology connecting member

Metal hose is an important engineering technology connecting member by corrugated flexible tube , a combination of nets and fittings . In a variety of gas, fluid piping systems as well as length, temperature , position and angle compensation systems as compensation components, sealing elements , connecting elements and a damping element , used in aerospace , petrochemical , mining , electronic, mechanical shipbuilding, medical health , textile electronics, energy and construction fields.Austenitic stainless steel Hydraulic pipe fittingsmaterial or materials required by the user , with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance ( up to 32MPa), the tube path can be connected in any direction , for temperature compensation, and absorb vibration and reduce noise , change the medium conveying direction , remove pipe or between pipes and the mechanical displacement devices , double flange metal corrugated hose to a displacement , vibration a variety of pumps, valves and other flexible joints is particularly applicable.
Hose metal hose is installed in the pressure line of the main pressure parts , while the bellows from the sheath effect, according to the size of pipeline pressure and locations , you can select one or more layers of stainless steel wire or steel for weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel , thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range , is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed . Corrugated metal Hydraulic hose fittings good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance , and many other features, it is relative to other hoses ( rubber, plastic hose ) much higher lifetime would therefore it also has a high overall economic efficiency . With the development of modern industry , for high temperature, high pressure hose corrugated metal demand is also getting bigger . Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas , air, heavy oil, petroleum, chemical -pharmaceutical etc apply.

Raw materials for metal hose metal hose production enterprises is crucial

Raw materials for metal hose metal hose production enterprises is crucial is to ensure product quality metal hose basis . However, with the metal hose increasingly fierce competition in the market , there are always some mercenary manufacturers or unscrupulous traders ,Hydraulic adapters will shoddy products to market , even if some of the regular manufacturers , due to their own loopholes in management or other reasons, may also make Some low-quality products into the market. These inferior products used in the production process, constitute a significant quality or safety problems, has become the product quality accidents or safety incidents culprit. In addition, the procurement of raw materials back if not properly controlled , but also directly affect the quality of products . How to prevent shoddy or deterioration of raw materials into the production line, every business needs to study. Experts believe that the metal hose business enterprise to control the quality of raw materials procurement , to ensure product quality and safety , from the raw material supplier evaluation, selection , strengthen inspection before storage of raw materials , improve storage management to control quality and other aspects .

Corrosion resistance of stainless steel hose depends on the content of chromium

Hose mainly divided into: stainless steel hose, metal hose, corrugated hose, plastic hose Corrosion resistance of stainless steel hose depends on the chromium content, if the amount of chromium added to 10.5%, the atmospheric corrosion resistance of steel significantly increased, but the higher chromium content, while still being improved corrosion Hydraulic pipe fittings resistance, but obvious. The reason is of steel with a chromium alloying treatment, the change in the type of surface oxide became similar to pure chromium metal oxide formed on the surface.This tight adhesion of chromium-rich oxide protective surface to prevent further oxidation of this thin oxide layer, through which you can see the surface of the natural luster of stainless steel, the stainless steel has a unique surface. Moreover, if the surface is damaged, the exposed steel surface and atmospheric reactions will self repair, re-formation of this kind of "passive film" and continue to play a protective role.

Stainless steel mesh cover is a metal braided hoses installed in the pressure line of the main pressure parts

Metal hose connectors at both ends : Connector includes threaded connection, flange connection, quick connector , metal hose three main functions : to reduce the stress of the pipe installation , compensating pipe nominal position to absorb the vibration of piping system .Stainless steel mesh cover is a metal Hydraulic hose fittings braided hoses installed in the pressure line of the main pressure parts , while the protective effect of the metal hose , the pressure in the pipe size and locations , you can select one or more layers of stainless steel wire or steel band performed according to certain parameters is woven to form a high pressure metal hose, I produced the metal braided hose pressure range usually ask PN0.6-32.0MPa, up to 42.0MPa. Stainless steel mesh nets are set with steel nets two types.

Plastic coated metal hose Major parts of the austenitic stainless steel

Plastic coated metal hose Major parts of the austenitic stainless steel , thus ensuring a plastic coated metal hose excellent heat resistance and corrosion resistance, plastic coated metal hose operating temperature range greatly , as -196-600 ℃, in actual use , according to corrosive media channels to select the appropriate grade of stainless steel , plastic coated metal hose to ensure corrosion resistanceAnnular corrugated plastic coated metal hose was closed annular tubular housing by the ring Hydraulic pipe fittings between waves and wave ripples in series. Annular plastic coated metal hose made seamless pipe or welded pipe forming process . Constrained by the processing methods , compared with spiral corrugated pipe, its single- tube length is usually shorter . Plastic coated metal hose is made of very thin-walled stainless steel seamless or welded congregation plastic coated metal hose through high-precision plastic processing forming . As plastic coated metal tube determines the elastic properties of the silhouette hose has good flexibility and fatigue resistance , making it very easy to absorb deformation of the cyclic loading a variety of sports , particularly in the piping system has the ability to compensate for a large amount of displacement .

Advantages of metal hose industry cluster

Industrial clusters as a form of industrial organization , both to avoid the "integration" and caused a large group management and agency costs too high , but also avoid the long-distance exchange transaction costs and lead to the problem of high cost of logistics . Conducive to the depth of the division of labor among enterprises , but also beneficial to the depth of the division of labor and the spirit , helping improve efficiency , is conducive to technological innovation. In this industrial cluster metal hose , business models are generally " core competencies plus outsourcing ." That each firm will be fully funded entirely concentrate to do their most advantageous that point , this point to make the country the cheapest , best , and Hydraulic ferrules even the world's most expensive , best . This is mostly the company's core capabilities. Other work , including other parts of the production , product design , sales and other related businesses, are outsourced to other specialized companies to complete . In this way, each product is a summary of a number of core competence . Industrial clusters help save transaction costsAdvantageous industries and industrial clusters specialized market mutual promotion of industrial clusters to stimulate the sense of competition more favorable treatment industry cluster "credit deficit disorder ," the creation of regional clusters favorable brand

Stainless steel fittings fittings sealing principle

Stainless steel fittings ferrule tube fitting the basic structure of the body made ​​of stainless steel fittings , card sets, compression nut composed of three basic parts ( Fig. 1 >, where stainless steel fittings ferrules are key parts .
Stainless steel fittings ferrule is a hill -side with the inner edge of the metal ring , it has good rigidity , hardness and toughness. Stainless steel Hydraulic tube fittings ferrule surface hardness is generally 5 to 63 , hard layer depth of 05 and II, the hardness of the substrate between 9891 ~ 96 . Stainless steel fittings card sets in the assembly process, when tighten the compression nut , stainless steel fittings ferrule axial force, pushed the connector body 24 " tapered bore , the card sets in the radial direction under the action of radial force contraction, so that the inner sleeve and the outer tube cut edge an annular groove is formed , as shown in Figure 2, segment 0 of the annular groove depth of about 3 to 0,501,111 , formed stainless steel ferrule and the pipe joint between the outer wall seal; Meanwhile , the card connector body Gunn outer wall 24 . tapered hole is completely tightly bonded together to form a sleeve between the joint body tapered bore sealing tape . 6 above in Figure 2 . " , 6 two a sealing tape to complete the sealing of a tube . From stainless steel Hydraulic pipe fittings ferrule tube fitting sealing principle can be seen, stainless steel fittings ferrule manufacturing quality is good or bad in itself as well as sealing tape ", 6 are in good form is related to the pipe stainless steel fittings for leaks of the key issues .

Professional production of card sets of pipe joints enterprise outlined Maintenance of pneumatic fittings

Professional production of card sets of pipe joints enterprise outlined Maintenance of pneumatic fittings1 tube fitting connector form: a. Clamp fittings, mainly for cotton braided hose; b. Ferrule fittings, mainly used in non-ferrous metal pipe, rigid nylon tube; c. Insert Hydraulic pipe fittings, mainly suitable for nylon tube, plastic tube. 2 Pipe Connector Type: sub corners, right angles, wear plates, three, four, etc., the user can choose according to need. 3 Nominal pipe fittings interface in three ways: a. According to the connected pipe nominal diameter nominal, commonly known as "Path" in the purchase clamp fittings and ferrule fittings, attention should be the inner diameter of the tube; optional plug-in pipe joints, the pipe diameter should be noted. Commonly used in the three, four and so on branch joints. b. according to the nominal pipe fittings interface thread, such joints are not commonly used. c. according to the nominal diameter pipe and fittings interface thread combinations nominal, pneumatic components commonly used in this type of connector inlet and outlet

Card sets of pipe joints without welding process

Card sets of pipe joints have a solid connection, pressure capacity, high temperature resistance, good sealing and repeated installation and maintenance easy, safe and reliable.Card sets of Hydraulic hose fittings pipe working principle is to insert the card kit, using the ferrule nut, inconsistent card sets, cut the pipe and seal. It is connected with the pipe without welding, is conducive to fire, explosion, and high-altitude operations, and can eliminate the evils of welding accidentally. So it is refining, chemical, oil, gas, food, pharmaceutical, instrumentation, piping and other systems controlled device in a more advanced connections. For oil, gas, water, etc. piping connections.

Prevent the above scenario is this: do not easily loosen or tighten the nut, under

Pipe handling: insert fittings pipe surface should be smooth part intact, avoid scratches and other defects. As shown in the bottom of the tube surface is scratched, the sealing joints affected. To end the tube axis perpendicular to the tube, the tube mouth without glitches. If you want to bend the pipe, the pipe ends to set aside a certain length, see below L value, connector manufacturers to follow the advice given value, otherwise it will affect the pipe insertion and sealing. Note Hydraulic pipe fittings matching size and pipe size. If OD3/8inch and OD 10mm pipe, diameter close, but not with OD10mm OD3/8inch the tube connector, and vice versa is also true. Manufacturers usually in metric fittings made ​​a mark, the installation should pay attention to distinguish.

Suddenly leaking pipe joints how to do

In the hydraulic system , both the metal pipe fitting , or hose fittings , there are prone to leakage problems . Hydraulic tube fittings , mostly due to pipeline subject to greater external force or impact, so that the card sleeve loose or deformed face caused by leaking pipe , you should check whether the card holder out of round , whether the defect edge , whether the pipe ends intact and nut, compression level , etc., while also eliminating pipeline force. For flared Hydraulic hose fittings, mostly due to excessive flaring , quality, undesirable or multiple demolition , resulting in flared cracks or deformation caused by leaks , then you can be re- flared front truncated . If you use a male and female cone top pressure seal , the leakage is mostly due to two cone damage, available on the cone abrasive grit grinding  In some with "о" or outer -ring face seal by the occasion , the leakage following reasons : "о" ring aging or deformation caused by leakage ; "о" ring assembly is not in place , so that the two plane connection when pressure is uneven or "о" ring being cut cause leakage ; "о" rings uncompacted , elastic deformation caused by insufficient leakage ; "о" spigot ring groove too deep and cause leaks. In this regard , the need to re-select the same diameter and cross-sectional thick "о" rings can also be sealed with a rabbet plane for cutting grooves or grinding to reduce the rabbet groove depth , so that "о" rings are flexible enough to deformation ( compression should generally be between 0.35-0.65mm ) . For the use of oil and rubber, wool felt, soft steel cardboard, combined sealing gasket or sealant leaking pipe joints , whether any material , you should first check the seals for damage , deformation, aging and rough through the large , etc. and then take the appropriate measures.

Hydraulic fittings Progentech elaborate hydraulic system of hydraulic fittings

Pressure pipe fittings hydraulic system due to its simple structure, flexible layout, good self-lubricating components, easy, and combined with other transmission methods. Therefore, at present most of the equipment in all types of enterprises on a wide range of applications, all electrolytic tending my factory, casting machines and tipping hybrid furnace and other key equipment are used the hydraulic system. The hydraulic system of hydraulic pipe fittings are generally closed loop piping system, hydraulic system failure is difficult to locate hidden main disadvantages of hydraulic drive. Equipment failure of the hydraulic system as soon as possible once the cause of the fault and immediately removed to reduce parking due to equipment caused economic losses. Engineering and technical personnel required by virtue of their professional and technical skills, basic knowledge of hydraulic transmission, hydraulic fittings components and the basic principles of structural knowledge loop failure analysis.

Metal hose is an important engineering technology connecting member

Metal hose is an important engineering technology connecting member by corrugated flexible tube, a combination of nets Hydraulic hose fittings. In a variety of gas, fluid piping systems as well as length, temperature, position and angle compensation systems as compensation components, sealing elements, connecting elements and a damping element, used in aerospace, petrochemical, mining, electronic, mechanical shipbuilding, medical health, textile electronics, energy and construction fields.Austenitic stainless steel metal hose material or materials required by the user, with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance (up to 32MPa), the tube path can be connected in any direction, for temperature compensation, and absorb vibration and reduce noise, change the medium conveying direction, remove pipe or between pipes and the mechanical displacement devices, double flange metal corrugated hose to a displacement, vibration a variety of pumps, valves and other flexible joints is particularly applicable.

DGJ hose fittings from solid metal structure and characteristics

DGJ hose fittings from solid metal structure and characteristics:
DGJ from the solid metal hose connector, can no threaded pipe or non-threaded device outlet with hose connection, save the threading process; metal Hydraulic pipe fittings made ​​of zinc alloy die-casting, zinc plated, frosted, or chrome; compact structure, high strength. Steel and metal hose connection, reliable, attractive appearance; This is self-fixed metal joints, metal hose is used to connect to non-threaded or non-threaded pipe outlet on the device; adaptation metal hose: JS-type, JSH type, JSB type, JSHG type; adapter tube: thin steel wire tube, black, galvanized iron pipes (water, gas pipes); selection DGJ from solid metal hose connector hose pipe connection, please note that the specifications, dimensions. (4) 90 degree bend connector: Thread Size: inch thread (G) Material: A, C, F parts are made of high quality steel. D is made ​​of die-cast metal. Color: Metallic (Silver) Operating Temperature: -40 C to 100 C, instant heat-resistant up to 120 C. Product Features:
1, after bonding and cabinet 90 degrees, thick zinc alloy, beautiful appearance, compact structure and high strength. 2, except for the following standard specifications, it may change according to needs of any size and thread standards. (5) 45 degree bend connector: Thread Size: inch thread (G) Material: A, C, F parts are made of high quality steel. D is made ​​of die-cast metal. Color: Metallic (Silver) Operating Temperature: -40 C to 100 C, instant heat-resistant up to 120 C. Product Features:
1, after bonding and cabinet at 45 degrees, thick zinc alloy, beautiful appearance, compact structure, Y-shaped metal hose tee

Since the solid metal hose connector structure and characteristics of

Since the solid metal hose connector structure and characteristics:DGJ from the solid metal hose connector, can no threaded pipe or non-threaded device outlet with hose connection, save Hydraulic tube fittings  process;JINGSHENGFLEX metal joints made ​​of zinc alloy die-casting, zinc plated, brushedor chrome; compact structure, high strength. Steel and metal hose connection, reliable, attractive appearance;
This is self-fixed metal joints, metal hose is used to connect to non-threaded onon-threaded pipe outlet on the device;Metal hose adapter: JS type, JSH type, JSB type, JSHG type;Adapter Pipe: thin steel wire tube, black, galvanized iron pipes (water, gas pipes);DGJ selection from the solid metal hose connector hose pipe connection, please note that the specifications, dimensions

Pressure metal hose cracking analysis

Chemical composition of the base metal hoses meet the standard requirements, microstructure normal. Failure hose member and the base metal and weld finished piece unused micro-cracks are present on the hose, the hose which indicates that micro-cracks before they are used.According to the position and shape of micro-cracks can be divided into two categories: one is located on the weld, the weld along the direction of the main direction of the crack, in addition to many cracks perpendicular to the main secondary cracks, these cracks are located weld intergranular columnar crystal position is formed when the welding weld cracking; second crest of microcracks in Hydraulic pipe fittings of the hose, these micro-cracks in the circumferential direction along the hose (Up direction perpendicular to the weld). and substantially parallel to each other, since the majority of these micro-cracks exist in the inner surface of the crest, and the analyzes were performed by location and morphology with regularity, so these cracks should be rolling waves generated when processing cracks. In welding and molding process, the micro crack initiation at the inner surface of the hose in the subsequent assembly process of trial and the use of extended fatigue microcracks, finally cracked through, causing oil spills. Recommended welding hose and processing to improve, in order to avoid the generation of microcracks.

The advantage of the metal hose

Metal hose because it has a good seal, pressure resistance, high temperature resistance, corrosion resistance, and certain other properties available around the song has become an essential component of modern pipeline. Metal hose can be used for chemical piping systems superheated vapor tube, hydraulic and pneumatic equipment, high-pressure pipeline, the transmission medium, pipes and other drug burst, the role is to absorb the reciprocating movement, absorb thermal expansion, vibration absorption, compensation pipe installation deviation. Because metal hose complicated forces at work, poor working conditions, so the accurate representation of the force metal hose there are considerable difficulties. Largely by the bellows metal hose, and Jic hydraulic fittings nets three parts. Corrugated metal hose pipe is the subject of the role played around; nets from enhanced shielding effect; joint plays a role in the connection.

Proper use of rotary joints

1 down time more than 72 hours before rebooting ring and graphite rings at the junction of the sealing surface surrounding drip lubricant (to prevent damage to two bonded graphite ring). Do not use the machine for a long time can cause rust damage to the rotary joint seals, such as the re-use will be stuck or spill things from happening.2 swivel hose connection must use the entrance, and a sufficient length.3 should be kept inside the piping and rollers clean, new machines often dirty due Hydraulic adapters caused by the rotary joint abnormalities.4 swivel rotary and fixed inner tube threaded points left and right. Clockwise rotation of the roller, with left hand thread rotary joint, whereas the same. Rotary joint rotary axis of right-hand thread, the thread is fixed to the inner tube D, on the contrary the same.5 rotary joint in the handling and installation process, should avoid the collision, no percussion, otherwise easily lead to damage to internal parts.6 In the absence of media into state, should avoid prolonged operation.7 rotary joint work should be in a suspended state.

Metal hose selection

Stainless steel metal hose (also known as metal hose, stainless steel hose, stainless steel corrugated hoses, MetalHose) is a modern industrial pipeline of a high quality flexible pipe. It mainly consists of stainless steel bellows, stainless steel nets and metal hose connector componentsTechnical parameters annular spiral metal hose metal hose technical parametersSpiral spiral corrugated metal hose is a tubular housing arranged in two adjacent corrugation has a helix angle, all of the bellows are connected by a spiral.Annular corrugated metal hose was closed annular tubular Hydraulic adapters by the ring between waves and wave ripples in series. Annular metal hose made seamless pipe or welded pipe forming process. Constrained by the processing methods, compared with spiral corrugated pipe, its single-tube length is usually shorter. The advantage of the annular metal hose is good elasticity, rigidity smaller.Metal hose connectors at both ends: Connector includes threaded connection, flange connection, quick connector, see the thread of connection when selecting summary tables, flanged summary form, the form of summary tables quick connector.Stainless steel mesh cover is a metal braided hoses installed in the pressure line of the main pressure parts, while the protective effect of the metal hose, the pressure in the pipe size and locations, you can select one or more layers of stainless steel wire or steel band performed according to certain parameters is woven to form a high pressure metal hose, I produced Hydraulic tube fittings braided hose pressure range usually ask PN0.6-32.0MPa, up to 42.0MPa. Stainless steel mesh nets are set with steel nets two types. Stainless steel mesh cover type metal hose schematic.Major parts of the metal hose austenitic stainless steel, so as to ensure the metal hose excellent heat resistance and corrosion resistance, the metal hose great temperature range for -196-600 ℃, in actual use , the metal hose pipe material selection should be based on the corrosive medium to select the appropriate grade of stainless steel, metal hose to ensure corrosion resistance.

Metal hose three roles

Metal hose three roles: to reduce piping installation stress, compensating pipe nominal position to absorb the vibration of piping system.1, size hose DN, the choice of the type of connector (mainly flanged, threaded connection, quick connector) and the size of the metal hose, hose lengths. 2, the pressure under actual working pressure hose, corrugated metal hose and then query the nominal diameter and pressure gauges, decide whether to use stainless steel mesh cover types of metal hose. 3, medium hose in the chemical properties of the transmission medium, according Hydraulic tube fittings corrosion resistance of the hose material parameter table, determines the hose material of the parts. 4, the temperature inside the hose and medium operating temperature range; hose when working ambient temperature. High temperatures, the metal hose shall work under high pressure and temperature correction coefficient to determine the temperature corrected pressure to determine the selection of the correct pressure rating. 5, the state is used by the state of the hose, metal hose with reference to the proper use and installation methods and hose compensation in settlement of optimum length. The length of the hose variety of sports state calculation and the minimum number of bends hose and minimum bend radius and other factors, parameters select the correct hose length, and correctly installed.

Metal hose selection

For a given length and specifications of metal hoses, their ability to withstand stress and shock have certain limits, therefore, when used according to the actual situation. Generally used nominal diameter hose and pipe the same nominal diameter, hose length array according to Shen tank temperature deformation, misalignment and earthquakes and other factors to determine the lateral displacement produced.Hydraulic adapters metal bellows tube, nets of three parts and connectors, bellows are made ​​of stainless steel, has a good flexibility, its longitudinal rigidity and bending rigidity is small, within a radius of curvature at the rated working, with a strong corrosion resistance and good temperature stability. Nets from strengthening the role of the metal hose has a large carrying capacity. Therefore, the metal hose with shock, subjected to bending, absorb stress.

Special features of the metal hose

Metal hose is an important engineering technology connecting member by corrugated flexible tube, a combination of nets and Hydraulic tube fittings. In a variety of gas, fluid piping systems as well as length, temperature, position and angle compensation systems as compensation components, sealing elements, connecting elements and a damping element, used in aerospace, petrochemical, mining, electronic, mechanical shipbuilding, medical health, textile electronics, energy and construction fields. Austenitic stainless steel metal hose material or materials required by the user, with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance (up to 32MPa), the tube path can be connected in any direction, for temperature compensation, and absorb vibration and reduce noise, change the medium conveying direction, remove pipe or between pipes and the mechanical displacement devices, double flange metal corrugated hose to a displacement, vibration a variety of pumps, valves and other flexible joints is particularly applicable.Hose metal hose is installed in the pressure line of the main pressure parts, while the bellows from the sheath effect, according to the size of pipeline pressure and locations, you can select one or more layers of stainless steel wire or steel for weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel, thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range, is -196-600 degrees to hose by pipelines through Hydraulic hose fittings choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed. Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance, and many other features, it is relative to other hoses (rubber, plastic hose) much higher lifetime would therefore it also has a high overall economic efficiency. With the development of modern industry, for high temperature, high pressure hose corrugated metal demand is also getting bigger. Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas, air, heavy oil, petroleum, chemical-pharmaceutical etc apply.

Metal hose Application Performance

Closed metal hose has high acid and alkali, high temperature, flexible bend freely and specifications are complete, easy to install, maintenance free, long life characteristics. Applicable to any environment, various types of metal cutting machinery and equipment are applicable. Corrugated metal pipe is a modern industrial pipeline a high quality flexible connecting tube. It mainly consists of metal bellows, metal mesh and various different forms of joint components. It is a spiral-shaped corrugated inner tube or annular corrugated thin-walled stainless steel bellows, bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel Hydraulic pipe fittings to certain parameters. Hose connectors at both ends of piping or equipment in accordance with the user's joint form prepared.Corrugated metal hose has good flexibility, fatigue resistance, high temperature resistance, corrosion resistance, and many other excellent features, it is relative to other types of hose (rubber hose, plastic hose) lifetime is much higher, with the the development of modern industry, resistant to high temperature, high pressure, corrosion-resistant corrugated metal hose is increasingly widely used. Gas stove with gas vent pipe connections, use that is resistant to corrosion, oxidation of the metal hose. Metal hose with threaded connection as long as the stove is connected, you can use the seal will not install due to human causes leaks, and ease of installation.

Metal hose applications industry

Metal hose applications industry1, metallurgical industry, metal hose is gradually transition to competition from product performance competitive cost performance, product structure in shape, the metal hose industry applications has been widely recognized.2, the petrochemical industry, the situation is relatively complex, on the one hand, large-diameter high-pressure hose and tank drain hose central market demand is growing, and new product development in the field of domestic far failed to put in place. On the other hand, some other occasion hose has appeared the phenomenon of alternative products such as dock appearing on the market with a non-metallic conduit tube (light weight, pressure fit). As the petrochemical industry is now the largest domestic market hose, various competitive in this field, input cost of new product development in this area is also larger.3, railway locomotive industries. As used by the Ministry of Railways information required on the form of a composite hose made ​​stereotypes provisions will not be great changes in the product mix in recent years, mainly manifested as price and service competition. But in the long term, the use of complex conditions, the uncertainty of the composite hose damage from abroad perspective of the development of Hydraulic tube fitting, metal hose being replaced is inevitable, so the product development is still far from over.4, shipbuilding industry, product testing by the Society in addition to need, but no special technical performance requirements, but according to foreign domestic data, its market demand is also huge. 5, civil construction, irrigation installation and other industries, in addition to some of the stereotypes of the hose outside (such as plumbing, etc.), thick-walled tube instead of the trend of domestic elbow yet developed, according to Japanese data show that as much as their domestic water heater application prospects hose market.

China's metal hose industry

Nearly half a year, the joint efforts of all parties, the financial crisis in an increasingly ice ablation. Ceramic industry for the better stabilization of the overall situation, but the pressures and challenges still. In fact, due to various reasons, our metal hose industry sector in the development process accumulated in some deep-seated contradictions and problems, not only surfaced, but exposes future development focus and difficulty lies. Excessive investment led to serious excess capacity is widespread, and the industry concentration is low, the structure is irrational, big but not strong problem is very prominent. Insufficient capacity for independent innovation capability, attention to light, less investment, care for immediate benefits at the expense of long-term development, product homogeneity is still fairly obvious. Metal hose enterprises are facing pressure on energy saving is still heavy, product unit energy consumption and resource utilization compared with the international advanced level there are still gaps. Meanwhile, the company's cost remains high. China's metal hose enterprise development, enterprise scale is uneven, the overall competitiveness of Hydraulic pipe fittings needs to be strengthened. The face of the financial crisis triggered by the economic downturn, the timely introduction of the implementation of the national expansion of domestic demand growth, improve the export tax rebate rate and a series of favorable policies and measures, effectively pulling the domestic market, metal hose enterprises to reduce losses generated rebound positive effects play an important role. Ceramic industry for the better stabilization of the overall situation, but the pressures and challenges still. In fact, due to various reasons, our metal hose industry in the development process accumulated in some deep-seated contradictions and problems, not only surfaced, but exposes future development focus and difficulty lies. Requires us to stand on the height of a global perspective, a good grasp of the economic development cycle, analyze the national macro-policy direction for the metal hose industry market Hydraulic hose fittings to analyze specific issues, understand the situation, seize opportunities, reasonable forecast future trend of metal hose industry and formulate correct development planning, timely adjust their development strategies, and actively explore new markets, the crisis in an invincible position in the development of a higher level.

Application of flexible metal hose

Flexible metallic conduit is used in wire and cable protection sleeve of the new material, belonging to the flexible metal hose, can be used for a variety of occasions that concealed within the dark and in-situ concrete laying. Bathroom bath or kitchen washing equipment leakage of water, it will depend on whether the connector metal hose connectors and bolts burst fracture, triangle valve bolt burst phenomenon. If you encounter this situation, measures should be taken to repair the water shutoff, corrugated metal hose adopts foreign advanced technology, combined with Hydraulic ferrules of the domestic market, the characteristics of the stainless steel bellows and rubber elasticity characteristics of Nepal, to optimize the combination, compensation devices, widely used ship, central air conditioning pumps, high-rise building fire pumps, engine export, effectively absorb vibration host or system, reduce transmission source and system expansion and contraction and installation of compensation, noise absorption piping systems, protective equipment, environmental protection, extended equipment and system life. has: Durable, high temperature, high pressure, corrosion, environmental protection advantages. replaced the soft rubber joints caused by unsanitary, easy to aging, pressure unstable, delamination tear, blasting and other adverse factors, to solve the system running worries. damping bellows compensator, metal hose is vibration system supporting the best choice.

Reinforced metal hose production process

Reinforced metal hose: hose housing and disposed therein end portions of the rubber tube is placed between the fastening with three metal sleeve, and the inner flange and the cap casing the outer layer and the intermediate metal valgus sleeve edge clamped together. Connections are secure, using the process will not fall off the hose casing and production installation convenient and simple. Hose casing and placed in one of the rubber tube, rubber tube ends and the ends of the socket with union nut connection gap with metal cap sleeves, middle and outer metal sleeve placed between the metal sleeve. Metal bellows, welded bellows end of the band tapered Hydraulic pipe fittings, characterized in that the bellows other end a and its connected as one of the light pipe, the light pipe sleeve with nuts, inside a the light tube is connected to the one of the convex ring, which has a convex outer ring gasket. Using a local one structure, only the use of a weld, the weld to reduce its impact, reducing the chance of leakage of gas, to improve the safety of use.

Overview of the hose

Hose mainly divided into: stainless steel hose, metal hose, corrugated hose, plastic hoseCorrosion resistance of stainless steel hose depends on the chromium content, if the amount of chromium added to 10.5%, the atmospheric corrosion resistance of steel significantly increased, but the higher chromium content, while still being improved corrosion resistance, but obvious. The reason is of steel with a chromium alloying Hydraulic tube fittings, the change in the type of surface oxide became similar to pure chromium metal oxide formed on the surface.This tight adhesion of chromium-rich oxide protective surface to prevent further oxidation of this thin oxide layer, through which you can see the surface of the natural luster of stainless steel, the stainless steel has a unique surface. Moreover, if the surface is damaged, the exposed steel surface and atmospheric reactions will self repair, re-formation of this kind of "passive film" and continue to play a protective role.

Plastic coated metal hose and application overview

Plastic coated metal hose Major parts of the austenitic stainless steel, thus ensuring a plastic coated metal hose excellent heat resistance and corrosion resistance, plastic coated metal hose operating temperature range greatly, as -196-600 ℃, in actual use, according to corrosive media channels to select the appropriate grade of stainless steel, plastic Hydraulic pipe fittings coated metal hose to ensure corrosion resistance. Annular corrugated plastic coated metal hose was closed annular tubular housing by the ring between waves and wave ripples in series. Annular plastic coated metal hose made seamless pipe or welded pipe forming process. Constrained by the processing methods, compared with spiral corrugated pipe, its single-tube length is usually shorter. Plastic coated metal hose is made of very thin-walled stainless steel seamless or welded congregation plastic coated metal hose through high-precision plastic processing forming. As plastic coated metal tube determines the elastic properties of the silhouette hose has good flexibility and fatigue resistance, making it very easy to absorb deformation of the cyclic loading a variety of sports, particularly in the piping system has the ability to compensate for a large amount of displacement .

Grain metal hose features

Grain metal hose features:1, the recommended maximum allowable amount of expansion of each wave: full-height △ α = ± 24mm half-high △ α = ± 12mm.
2, block gray plate: less dust on the air duct pipe may not be used for dusty flue should file gray board.3, to reduce the number of bellows node should be considered cold drawn 50%.4, the standard half-height corrugated metal hose for cross-sectional area lessthan 4.6 square meters and the smoke duct dimensions less than 1.5m in one side but greater than Hydraulic tube fittings 0.6mm occasions. Standard full-height corrugated metal hose for all the smoke duct.Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance, and many other features, it is relative to other hoses (rubber, plastic hose) much higher lifetime would therefore it also has a high overall economic efficiency. With the development of modern industry, for high temperature, high pressure corrugated hose you also demand greater and greater.Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas, air, heavy oil, petroleum, chemical-pharmaceutical etc apply.

Metal hose material characteristics

Metal hose connectors at both ends: Connector includes threaded connection, flange connection, quick connector, metal hose three main functions: to reduce the stress of the pipe installation, compensating pipe nominal position to absorb the vibration of piping system.Stainless Hydraulic ferrules steel mesh cover is a metal braided hoses installed in the pressure line of the main pressure parts, while the protective effect of the metal hose, the pressure in the pipe size and locations, you can select one or more layers of stainless steel wire or steel band performed according to certain parameters is woven to form a high pressure metal hose, I produced the metal braided hose pressure range usually ask PN0.6-32.0MPa, up to 42.0MPa. Stainless steel mesh nets are set with steel nets two types.

Special features of the metal hose

Metal hose is an important engineering technology connecting member by corrugated flexible tube , a combination of nets and fittings . In a variety of gas, fluid piping systems as well as length, temperature , position and angle compensation systems as compensation components, sealing elements , connecting elements and a damping element , used in aerospace , petrochemical , mining , electronic, mechanical shipbuilding, medical health , textile electronics, energy and construction fields.Austenitic stainless steel metal hose material or materials required by the user , with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance ( up to 32MPa), the tube path can be connected in any direction , for temperature compensation, and absorb vibration and reduce noise , change the medium conveying direction , remove pipe or between pipes and the mechanical displacement devices , double flange metal corrugated hose to a displacement , vibration a variety of pumps, valves and other flexible joints is particularly applicable.
Hose metal hose is installed in the pressure line of the main pressure parts , while the bellows from the sheath effect,Hydraulic tube fittings according to the size of pipeline pressure and locations , you can select one or more layers of stainless steel wire or steel for weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel , thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range , is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed . Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance , and many other features, it is relative to other hoses ( rubber, plastic hose ) much higher lifetime would therefore it also has a high overall economic efficiency . With the development of modern industry , for high temperature, high pressure hose corrugated metal demand is also getting bigger . Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas , air, heavy oil, petroleum, chemical -pharmaceutical etc apply.

Metal hose Application Performance

Closed metal hose has high acid and alkali, high temperature, flexible bend freely and specifications are complete, easy to install, maintenance free, long life characteristics. Applicable to any environment, various types of metal cutting machinery and equipment are applicable. Corrugated metal pipe is a modern industrial pipeline a high quality flexible connecting tube. It mainly consists of metal bellows, metal mesh and various different forms of joint components. It is a spiral-shaped corrugated inner tube or Hydraulic hose fittings annular corrugated thin-walled stainless steel bellows, bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel woven according to certain parameters. Hose connectors at both ends of piping or equipment in accordance with the user's joint form prepared.Corrugated metal hose has good flexibility, fatigue resistance, high temperature resistance, corrosion resistance, and many other excellent features, it is relative to other types of hose (rubber hose, plastic hose) lifetime is much higher, with the the development of modern industry, resistant to high temperature, high pressure, corrosion-resistant corrugated metal hose is increasingly widely used. Gas stove with gas vent pipe connections, use that is resistant to corrosion, oxidation of the metal hose. Metal hose with threaded connection as long as the stove is connected, you can use the seal will not install due to human causes leaks, and ease of installation.

Stainless steel pipes instead of water supply pipeline has become the trend of other materials

As more and more high buildings, high-rise buildings in the drinking water and fire water delivery systems have special requirements, the system must not only be able to withstand high pressure but also caused by the earthquake and the building of wind movement. Engineers are with stainless steel piping system meets these requirements. The world's newest and tallest 3 buildings (China Taiwan Province, Taipei Financial Center, Brisbane, Australia Oro Plata Building and Kuala Lumpur Petronas Twin Towers) is the best illustration of this to the high pressure stainless steel pipe the system Hydraulic adapters changes. In the past 25 years the German drinking water extraction, treatment and distribution systems made ​​of stainless steel has been growing widely recognized. Stainless steel tube is not only smooth luxury, look as new, and is widely recognized as a leading environmental health water supply pipes. The strength of austenitic stainless steel pipe carbon steel pipe 2 times, 4 times brass, PPR plastic pipe 8 times, is truly safe and reliable and can be done with the building with life green pipe. Another major use of stainless steel piping is - the life cycle cost of stainless steel components has obvious advantages, because the long-term infrastructure such as drinking water means the use of a stainless steel, you rarely need to be replaced. Although stainless steel drinking water systems in the world, the universal application will take some time, but in the engineering and economic aspects of stainless steel has the advantage over other alternative materials have shown that: instead of other materials with stainless steel pipe water pipe has become a trend. .

Swivel hose joint installation knowledge

1, the rotary hose fittings in the handling and storage process should avoid bumps and drops, to avoid damage to the interface and internal parts.
2, concentric installed as to ensure the smooth functioning of the rotary joint.
3, the threaded connection rotating hose connector during installation, you should pay attention to the inner and outer tube is threaded to correspond to the direction of rotation of the drum, and the inner and outer tubes screwed to it should be consistent.4, swivel hose Hydraulic tube fittings and pipeline connection between the hose must be connected (we recommend the use of scrambling and good company metal hose), the absolute prohibition of rigid connection.5, swivel hose joint entrance as directly as possible with the hose. To relieve joint auxiliary weight and prolong life.6, the inner tube assembly, with attention to the size and weight of the auxiliary support. Internal rotation of the rotary joint with the inner tube and fitting tolerances recommended H8/e7 fit.7, the rotary joint rotation stopper should be properly supported and generally lever detent hole diameter should be smaller than 2mm, so as not to affect the freedom of swivel adjustment and compensation. Connected to the device for rotating the joints of the various connections (customer specific configuration of the device according to set various types of connections