Hydraulic fittings and the pipe is connected

Hydraulic fittings and the pipe is connected between the different forms of the main seal
Hydraulic fittings and the pipe is connected between the different forms of sealing, the pressure level range is different, the main sealing structure is as follows:
Card sets of pipe joints in the ferrule conditional (joint body 24 degree taper) of the cases, by external forces into the connector body 24 degrees tapered bore, tapered cut along the radial contraction process, to the tube card sets elastically deformed, and the outer diameter of the tube 24 degrees to form a rigid inner cone surface sealing.
Flared fittings through the union nut (A type with ferrules) and the pipe will be welded together beforehand) hydraulic hose and fittings to take over, the connection will take over the plane compression nut placed on the end surface of the connector body rubber O-ring to form an elastic seal.
Welded pipe joints cone nut directly connected by connecting pipes welded together in advance with 24 degrees cone receivership, will be placed in the cone coupling nut over the rubber O-ring compression fitting body 24 degrees in the inner cone of the cone formed on the elastic seal.
These hydraulic fittings several main seal structure, the next lesson will explain in detail each of the installation and construction fittings.
In a piping system, the pipe diameter indicates that the associated series of the components for other working conditions, other materials and non-standard parts, which allows pressure to be agreed and fittings Manufacturer
Hydraulic pipe fittings manufacturer is standard operating pressure, must ensure that the strength and usefulness of joint sealing and connecting up to 4-fold safety factor. Fittings hose nipples manufacturer nonstandard obligation to verify the pressure tube fittings
Steel hydraulic fittings temperature load performance
Steel hydraulic fittings permissible operating temperature is generally -20 to 120 degrees, the ambient temperature is 40 degrees, according to the corresponding standard production pipe fittings currently no description of low temperature performance at -40 degrees ambient temperature using the hose connections and steel production plant connected to the current production practices have not yet found adversely affected.

How should the correct operation of pipe clamp

Pipe clamp is that people are more familiar with manual tools, but for the initial contact with the pipe wrench operator, but still there will be some usability issues. Such cards are not tight, such as slipping. Pipe clamp pipe clamp manufacturers that master the correct way to use pipe wrench can not only prolong the life and more efficient service for our real life.
Pipe clamp is used to support the hydraulic hose adapters, so the choice of pipe clamp and pipe diameter to match the size, ie pipe clamp specifications should meet the quality production standards. Pipe clamp nozzle size can be adjusted by a nut, and in the use of the time to ensure that the pipe clamp pipe clamp screw firmly stuck in the pipeline, the best hand grip on the bottom of the handle pipe wrench torque to achieve optimal growth labor-saving effect. Pipe clamp is typically used in a clockwise rotation, pipe clamp manufacturers once again reminded of the long arm of the lever when using pipe wrench torque to pay attention to avoid slipping phenomenon.

Pipe Fittings parts are created

Tee is often used in mechanical parts products, but also the fittings necessary parts, as a structure which is widely used in water transfer pipe path.
Tee is very typical of stretch-type parts, tee styling with all the basic method of stretching can be easily created. Extrude feature is described in a section of a sketch, along a specified direction (generally perpendicular to the cross-sectional direction along) hydraulic hose assembly extends a distance characteristic of the formation. Stretching is SolidWorks model is the most common type, with the same cross-section, with a length of entities, such as rectangular, cylindrical and so on can be formed by the tension characteristics.

Take you into the high-pressure pipe fittings elbow World Time

A high pressure elbow Material
Using high quality steel, carbon steel, stainless steel or alloy steel.
Second, the characteristics of high pressure elbow
(1) high pressure elbow with good compressive strength;
(2) high-pressure pipe elbow has good wear resistance;
(3) high-pressure elbow with excellent corrosion and acid-base capability.
(4) High elbow can shorten the manufacturing cycle, the production cost is greatly reduced.
(5) The following material is simple, easy to ensure accuracy, easy assembly and welding.
Third, hydraulic hose and fittings the application of high pressure elbow
High elbow for oil, gas, chemicals, utilities, construction and boiler piping system industries.
Fourth, the high pressure elbow craftsmanship
(1) Welding a polygonal cross-section or a polygonal ring shell closed at both ends of the multi-row fan shell, the internal pressure washed over the media, applying less pressure, including pressure from the polygonal cross-section under the action of becoming round, eventually become a circular ring shells.
(2) a circular ring shells can be cut into 4 90 6 60 high elbow or elbow, or other specifications of the high pressure elbow.

Tube Applications

Building materials industry development prospects
At present, China is already the world's largest producer and consumer of building materials. Main building materials of cement, plate glass, building and sanitary ceramics, stone and wall materials production ranks first in the world for many years. At the same time, continuously improve the quality of building materials, metric hydraulic fittings energy and raw material consumption decreased year by year, a variety of new building materials continue to emerge, building products constantly upgrading. Pipe manufacturer in North China are more Mengcun County, Cangzhou City, Hebei Province which is known as "China pipe capital" is the Chinese tube production and sales of main gathering place, the country has about 70% by the weld fittings are produced in the region, but also China welded pipe fittings export base. "Eleventh Five-Year Plan" Infrastructure investment has been the chess set, roads, railways and other infrastructure construction investment growth and the outbreak of the steady growth of investment in ordinary civil construction, the building industry is in the upward phase of the economy. Meanwhile, in the construction of energy-saving society and the State to strengthen the independent innovation capability in the context of energy efficiency and technological innovation theme will be the development of the industry hot spot.hose fittings  Now plastic pipe fittings and pipe fittings once again set off a boom.

Double loop double loop rotary joint can be divided into fixed and rotary

swivel double loop. Sealing surfaces and seals made ​​of special material, abrasion resistance, long life, corrosion resistance, not leak. Internal seal wear condition by visual appearance of the product that can prevent machine downtime or mechanical damage to the effects of prevention and reduction of losses. There are separate lines, can be used for different working conditions needs to make choices, to maximize effectiveness. Housing and the rotary shaft supported by a precision bearing, rotating the rotary flexible and lightweight, the friction force is small, quick couplings the liquid medium may include water, oil, air, etc., the use of industry wide. Replace seal wear and easy maintenance, do not re-purchase of new products, cost savings.

Liquid multi-channel rotary joint

Loop rotary joint working conditions according to choose connection method. Transmission media work freely chosen according entrance side or rear access. Sealing surfaces and seals made ​​of special material, abrasion resistance, long life, corrosion resistance, not leak. There are two rotary joints internal precision bearings, smooth durable, strong and flexible, the friction coefficient is small, it can speed operation. Internal seal wear condition by visual appearance of the product that can prevent machine downtime or mechanical damage, to achieve the effect of prevention and reduction of losses. Replace seal wear and easy maintenance, do not re-purchase of new products, cost savings. Single-loop series rotary joint: china hydraulic hose a variety of industries to meet domestic demand, the fluid medium water (water), vapor (steam), oil (oil), air (Air), vacuum (vacuum) cutting fluid (coolant), chemical solvents such as toluene .

Standard pipe fittings

Existing national standards
GB/T10752-1995 marine steel welding head
GB/T12772-1999 flexible interface cast iron drainage pipes and fittings
GB / T 8803-2001 rigid PVC injection molding (PVC-U), chlorinated polyvinyl chloride (PVC-C), acrylonitrile - butadiene - styrene copolymer (ABS) and acrylonitrile - styrene - acrylate terpolymer (ASA) tube heat oven test method
GB / T 8802-2001 Thermoplastics pipes and fittings - Determination of Vicat softening temperature
GB / T 18251-2000 polyolefin pipes, hydraulic hose sleeve and compounds pigment or carbon black dispersion measurement method
GB / T 18474-2001 crosslinked polyethylene (PE-X) pipes and fittings - Test methods for crosslinking
GB / T 18475-2001 Thermoplastics pipes and fittings for pressure applications classification and designation - Overall service ( design ) coefficient
GB / T 18742.3-2002 Polypropylene piping systems for hot and cold water - Part 3 : Fittings
GB / T 18991-2003 hot and cold water systems - Thermoplastics pipes and fittings
GB / T 18993.3-2003 cold water chlorinated polyvinyl chloride (PVC-C) piping systems - Part 3 : Fittings
GB / T 18998.3-2003 industrial chlorinated polyvinyl chloride (PVC-C) piping systems - Part 3 : Fittings
GB / T 19228.3-2003 stainless steel press fittings with rubber O-ring
GB / T 19278-2003 Thermoplastics pipes , fittings and valves General terms and their definitions
GB / T 19473.3-2004 cold water polybutylene (PB) piping systems - Part 3 : Fittings
GB / T 12459-2005 steel welded seamless pipe fittings
GB / T 19712-2005 Plastics pipes and fittings - Polyethylene (PE) saddle bypass impact test method
GB 15558.2-2005 Gas Buried Polyethylene (PE) piping systems - Part 2 : Fittings
GB / T 13663.2-2005 water supply polyethylene (PE) piping systems - Part 2 : Fittings
GB / T 19806-2005 Plastics pipes and fittings extruded polyethylene electrofusion assemblies peel test
GB / T 19807-2005 Plastics pipes and fittings PE pipe fittings combined and fused Preparation of test pieces
GB / T 19808-2005 Plastics pipes and fittings of nominal outside diameter greater than or equal to 90mm polyethylene electrofusion assemblies tensile peel test
GB / T 19809-2005 Plastics pipes and fittings polyethylene (PE) pipe / pipe or pipe / fittings Butt component preparation
GB / T 19810-2005 polyethylene (PE) pipes and fittings - Butt joint tensile strength and failure mode of test
GB / T 13401-2005 sheet steel pipe fittings
GB / T 19993-2005 hot and cold water piping systems - Thermoplastics pipes and fittings combined system thermal cycling test methods
GB / T 5836.2-2006 building drainage PVC (PVC-U) pipe fittings
GB / T 15819-2006 china hydraulic hose irrigation with polyethylene (PE) pipe fittings caused by the insertion of environmental stress cracking susceptibility test methods and technical requirements
GB / T 20201-2006 irrigation with polyethylene (PE) pressure pipes mechanical connection fittings
GB / T 20207.2-2006 acrylonitrile - butadiene - styrene (ABS) pressure piping systems - Part 2 : Fittings
GB / T 20674.2-2006 plastic pipes and fittings welding equipment polyethylene systems - Part 2: fused connection
GB / T 20674.1-2006 polyethylene plastic pipes and fittings systems welding equipment - Part 1 : Butt
GB / T 8801-2007 rigid polyvinyl chloride (PVC-U) pipe fittings falling test methods
GB / T 21300-2007 Plastics pipes and fittings - Determination of opacity
GB / T 21409-2008 Glass plant , pipeline and fittings inspection , installation and use of the general rules
GB / T 21408-2008 Glass plant , pipeline and fittings 15mm ~ 150mm diameter pipes and fittings versatility and interchangeability
GB / T 14383-2008 forged socket weld and threaded fittings
GB / T 13295-2008 water and gas pipes with ductile iron pipes, fittings and accessories
GB / T 6567.3-2008 Technical drawings - Graphical symbols for piping systems Pipe Fittings
GB / T 22051-2008 crosslinked polyethylene (PE-X) pipe slip tight sleeve cold expansion fittings
GB / T 6567.5-2008 Technical drawings - Graphical symbols for piping systems piping , fittings and valves Axonometric graphical symbols
GB / T 11618.1-2008 copper fittings - Part 1: brazed fittings
GB / T 12772-2008 flexible interface cast iron drainage pipes, fittings and accessories
GB / T 3420-2008 gray cast iron pipe fittings
GB / T 11618.2-2008 copper fittings - Part 2: compression type fittings
GB / T 23241-2009 irrigation plastic pipes and fittings basic parameters and technical requirements
GB / T 23682-2009 Refrigerating systems and heat pumps hose elements, vibration isolators and expansion joints requirements, design and installation
GB / T 24452-2009 building sewage , waste water ( low and high temperature ) with chlorinated polyvinyl chloride (PVC-C) pipes and fittings
GB / T 17457-2009 ductile iron pipe and fittings cement mortar lining
GB / T 24596-2009 ductile iron pipe and fittings polyurethane coating
GB / T 24672-2009 sprinkler with metal thin-walled tube and pipe fittings
GB / T 5135.19-2010 Automatic sprinkler systems - Part 19 : Plastic pipes and pipe fittings
GB / T 26002-2010 gas transport stainless steel corrugated hoses and fittings
GB / T 26120-2010 pressure stainless steel threaded pipe fittings
GB / T 26081-2010 sewage Ductile iron pipes, fittings and accessories
GB 26255.2-2010 gas polyethylene piping systems for mechanical pipe fittings - Part 2 : Nominal pipe diameter greater than 63mm conversion with steel pipe fittings
GB 26255.1-2010 gas polyethylene piping systems for mechanical pipe fittings - Part 1 : Nominal diameter of the pipe is not greater than 63mm conversion with steel pipe fittings
GB / T 26500-2011 fluorine plastic lined steel pipe, pipe fittings General technical requirements
GB / T 19228.2-2011 stainless steel compression tube assemblies - Part 2 : Connect with thin-walled stainless steel tube
GB / T 19228.1-2011 stainless steel compression fitting assemblies - Part 1 : compression type fittings
GB / T 27684-2011 titanium and titanium alloy seamless and welded pipe fittings
GB / T 27891-2011 Carbon Steel compression fittings

What useful filter hydraulic fittings

 What hydraulic fittings filter useful primarily used too many places , each hydraulic system hydraulic fittings above are to such an accessory filters . With the engine running , the intake is intermittent , causing the air inside the air filter housing vibration , if the air pressure is too volatile , sometimes affect the engine intake . In addition , when it will increase the intake noise . To suppress intake noise , you can increase the volume of the air filter housing , some of which are still arranged baffle to reduce resonance.
  The air cleaner filter element divided into dry and wet filter two kinds . Dry filter paper or non-woven material . In order to increase the air passage area , the filter processing of many small mostly wrinkles . When the filter slightly stained , you can use compressed air to blow , when the filter should be replaced when dirty serious new core . Use a wet sponge -like polyurethane filter class materials, should be equipped with dropping some of the oil, rub evenly, so that absorption of air in the foreign body. If the filter dirty , you can clean the oil used for cleaning , hose adapters excessive fouling should be replaced with new filter. The role of hydraulic fittings cleaner engine in the work process large volumes of air to be sucked into , if the air does not pass through filtration , airborne dust is sucked into the cylinder , the piston group and will accelerate the wear of the cylinder . Larger particles into between the piston and the cylinder will cause serious " cylinder " phenomenon, which in the dry sandy working environment is particularly serious. Air filter installed in the front of the intake manifold or carburetor , air filter played dirt, grit role in ensuring a sufficient amount into the cylinder , clean air .
  Hundreds of thousands of parts in the car , the air filter is a very humble part , because it is not directly related to the technical performance of the car , but the car's actual use, hydraulic hose assembly  air filter has the car ( especially the engine ) have a great impact on the service life . On one hand , if there is no filtration of the air filter , the engine will contain inhalation of dust , particles of the air , resulting in serious wear engine cylinder ; other hand, if in the course of a long time without a maintenance , air filter the filter will clear the air of dust Nianman , which not only makes the filter capacity decreased, but also impede the flow of air , resulting in rich mixture of the engine is not working properly . Therefore , regular maintenance of the air filter is essential, there is no time to be at work to check the hydraulic fittings filter is optimal.

Hydraulic fittings

In addition to the power source, the control section, the executing agency outside of the application of the hydraulic system components, the other is called hydraulic fittings; a complete hydraulic tool system consists of five parts, namely, power components, actuators, control components, auxiliary components and hydraulic oil. The role of the power element is the prime mover of the mechanical energy is converted into a liquid pressure energy, the hydraulic system of the pump means,tube clamp  which provide power to the implementation of the entire hydraulic system components (such as hydraulic cylinders and hydraulic motors) the role of the fluid pressure energy conversion the mechanical energy to drive the load for a reciprocating linear motion or rotary motion; control element (i.e. various hydraulic valves) in the hydraulic system to control and regulate fluid pressure, flow and direction.

Flared fittings andInsert Welded pipe joints

Flared fittings andInsert Welded pipe joints
Using flaring tube ends are sealed, no additional seals. Simple structure, suitable for thin-walled pipe coupling for oil and gas as a medium low pressure pipeline system, which allows the use of pressure are shown in Table 41 Table 27 ~ 41GB5625.1 ~ 5653-1985
Insert Welded pipe joints
Will require the length of tube clamp the tube into fitting until the pipe end in contact with the inner end of tube fittings, tube and pipe joints will be welded into one, eliminating the need to take over, but require strict application of pipe size to oil, gas pipeline system for the medium

Welded pipe joints and ferrule fittings characteristics

Welded pipe joints
Use over and pipe welding. Between the connector body and takes over the O-ring seal. Simple structure, easy to manufacture, sealing, pipe size for less precision. Requires high quality welding, assembly and disassembly inconvenience. Working pressure up to 31.5MPa, operating temperature -25 ~ 80 ℃, as the medium for the oil pipeline system.
Card sets of pipe joints
Stuck pipe deformation using the card sets and sealed, advanced structure, good performance, light weight, metric hydraulic fittings small size, easy to use, widely used in hydraulic systems. Working pressure up to 31.5MPa, required pipe size, high precision, cold drawn steel pipe required. Card sets are also high precision. For oil, gas and general corrosive media pipeline system

Hydraulic valve block to achieve the leading domestic

The development of hydraulic valves, according to Chinese nuclear power plant development of the excellent situation and status of the development of nuclear power valve to achieve rapid development of nuclear power, hydraulic manifold localization, Shenyang Saatchi high pressure valves Ltd. Chief Engineer at Guoliang believes that China's valve business, industry and the state should take measures to address the impact of hydraulic manifold block localization issues:
One as soon as possible complements the hydraulic valve block of the technical standards and specifications. The existing EJ, GB, according to ASME, RCC-M standard complements, in line with national conditions, improve the operability to facilitate domestic nuclear power valve in the design, material selection fabrication, inspection and other aspects can be achieved on the localization.
(2) integration of Chinese valve industry nuclear power valve experiments, detection and identification of the equipment and capabilities, sharing resources, avoid duplication of hydraulic hose sleeve investment redundant construction, speed up the development of nuclear power valve speed.
3. Strengthen personnel training and the introduction of nuclear power technology absorption manifold to improve nuclear power valve design capability and level.
4 increase investment in software and hardware to ensure that the design, manufacture advanced means, spare parts processing and machine assembly and reliable quality.
5. Strengthen welding, non-destructive testing, heat treatment and other special craft personnel training assessment. Research and the use of advanced technology, the parts manufacturing quality standards to meet the design drawings and specifications.
6 nuclear security awareness education and training of workers, strengthen the manifold block design, manufacture whole process of quality management, improve management level.

Manifold and valve member with the combination of research

According to incomplete statistics, in 2011 China's fluid sealing industry above designated size industrial output value of 77.271 billion yuan enterprises, an increase of 21%, of which the hydraulic industry completed 43.62 billion yuan, an increase of 18.47%; pneumatic industry completed 15.046 billion yuan, an increase of 29.60%; sealing industry completed 18.605 billion yuan, an increase of 23.95%. fluid airtight industry 125 key enterprises in 64 hydraulic industry, hydraulic industry 6, pneumatic industry 40, 15 sealing industry, economic efficiency index was 233.56, 226.44 over the same period last year. these key enterprises of the industrial output value of 33.424 billion yuan, an increase of 12.94 percent, of which the output value of 14.171 billion yuan hydraulic enterprises, an increase of 7.72%; hydraulic enterprise value of 533 million yuan, down 4.77%; pneumatic enterprise value of 8.639 billion yuan, an increase of 25.12%; sealing enterprise value of 7.32 billion yuan, hydraulic hose and fittings an increase of 11.14% of the good prospects for development, but also attracted a lot of foreign investment in the industry. According to incomplete statistics, nearly two years fluid sealing industry to invest no less than 30 billion yuan, including construction machinery and other hydraulic hosting industry investment funds accounted for approximately 50% of total investment. Sany, Liugong, Long Engineering , Zoomlion, Shandong Changlin construction machinery and a number of well-known enterprises have invested or hydraulic corporate mergers and reorganizations. China is currently seeking high-end break more than 20 tons of hydraulic excavators used for basic control in the hands of an enterprise that Kawasaki company. Each discussed the matter, sand Bossen are solemnly. Domestic high-end hydraulic manifold block the kinds of situation, has attracted national attention. October 2011, after six months of planning, engineering machinery with high-pressure hydraulic manifold system industrialization and application of the preparatory body established collaborative work platform. Under the guidance of government departments in the industry, driven by the working platform focused on the China Construction hydraulic tube fittings Machinery Industry Association and the China Hydraulics Pneumatics & Seals Association, two associations of superior forces to HMB as a breakthrough, taking manifold and accessories production Gakken a combined form, increased industry consolidation, the establishment of effective docking platform, and strive in the next 3 to 5 years to break China's construction machinery industry hydraulic and other accessories on foreign dependence.

Hose assembly failure analysis

1, symptoms: hose inner tube is very hard, has been cracking.

   Analysis: temperature of the inner tube is easily precipitated plasticizer, which is a flexible hose can be a plastic material. Entrained gas oil oxidation allows the inner tube. Occur in the rubber products such oxidation reactions can be cured. Oxygen and temperature, will greatly accelerate the hardening of the hose tube. Occurred inside the inner tube cavitation also have the same effect.

2, symptoms: hose cracking internally and externally, but the elastic material is still soft at room temperature deflectable.

   Analysis: The likely reason is that the hose when the ambient temperature is very low deflection. Most standard hose is rated to -40 degrees, and some AQP hose rated temperature is -49 degrees, usually military hose rated temperature is -54 degrees, and some thermoplastic hose rated temperature is -54 degrees, poly four vinyl fluoride hose rated temperature is -73 degrees.

3, symptoms: hose rupture, hydraulic hose sleeve peel the outer layer of wire reinforced rubber examination found that the entire length of the hose irregular wire breakage.

   Analysis: This indicates the pressure of the hose in a highly frequent fluctuations. SAE American Automobile Association, the two-story steel braided hose impact testing required at 133% of the recommended operating pressure of up to 200 000 cycles. About four-spiral hose SAE impact test requirements of up to 500 000 cycles. If the number of pulses within the extrapolation in a short time, more than one million times, the best choice for the enhancement layer wound hose.

4, symptoms: hose rupture, but not displayed on the entire length of the hose with multiple wire breakage. May be more than one hose rupture.

   Analysis: This indicates that the pressure has exceeded the minimum burst strength of the hose. Recommended to use higher-strength hose, or hydraulic lines appear hydraulic hose and fittings high pressure conditions can cause malfunction.

Welded pipe joints and ferrule fittings characteristics

Welded pipe joints
Use over and pipe welding. Between the connector body and takes over the O-ring seal. Simple structure, easy to manufacture, sealing, pipe size for less precision. Requires high quality welding, assembly and disassembly inconvenience. Working pressure up to 31.5MPa, operating temperature -25 ~ 80 ℃, as the medium for the oil pipeline system.
Card sets of pipe joints
Stuck pipe deformation using the card sets and sealed, advanced structure, good performance, light weight, small size, easy to use, quick couplings widely used in hydraulic systems. Working pressure up to 31.5MPa, required pipe size, high precision, cold drawn steel pipe required. Card sets are also high precision. For oil, gas and general corrosive media pipeline system

Hose assembly - how the selection

Hose assembly usage affect many factors , only in accordance with the conditions and the correct selection of hose fittings, hose used in order to ensure the reliability and economy. These factors are:
1 , hose size
Hose diameter should be appropriate, too small diameter pipeline will increase the flow rate of the medium , the system heat, reduce efficiency , and will produce excessive pressure drop , affecting the overall system performance , if the hose with hose clamps fixed or wear over steel and other spacers , they should also pay attention to the outside diameter of the hose .
2 , the working pressure
Generally refers to dynamic pressure hose hose in continuous maximum allowable working pressure . In accordance with the provisions of the relevant international standards for hydraulic hose safety factor is generally recommended working pressure of the hose is usually a quarter of the minimum burst pressure values ​​.
3, the impact stress and fatigue life
The selection is based on the hydraulic hose system design maximum pressure value determined . As the hydraulic system pressure value is usually dynamic and sometimes impact pressure , impact pressure peak is much higher than the maximum system pressure. However, the system generally have a relief valve, the impact pressure of the hose will not seriously affect the fatigue life. For particularly frequent shock pressure of the manifold block , suggested the use of particularly resistant to impact pulsation hose products.
4 , the temperature range
Users should be allowed in the hose quality specifications used within a temperature range of hose . If the working environment temperature exceeds this range , it will affect the life of the hose , which will greatly reduce the ability to withstand pressure . Operating ambient temperature is too high or too low, long-term system , we recommend using the hose jacket.
5, the chemical compatibility
If you use special hydraulic medium , users should ensure that their choice of hose assembly hose inner and outer , joints and O-ring compatible with the media.
6 , the bending radius
Bending radius
Meaning :, R is the hose can be bent without damage or shorten the life of the inner circle of the ( minimum ) radius .
For a hose , R value is banjo fitting certain. If the bend radius is less than when using the R value with the textile reinforcing layer is likely to occur hose kinks. Use a spiral wire hose would be better.
7 , the friction
Hose when used usual contact or friction with hard objects , the proposed increase in the external hose spring jacket.

Flange with hydraulic flange

Material: carbon steel, S25C, ASTM A105, 20 #, SGD4K; stainless steel: US304, SUS304L, SUS316, SUS316L, SUS321.
Carbon Product Name: Hydraulic Flange / Hydraulic Square Fflange
Dimensions: 3/8 "to 4"
Pressure Rating: PN10MPa,hydraulic hose sleeve PN16MPa, PN21MPa, PN28MPa, PN35MPa
Connection: FA-LA, FA-HA/HB, FA-SA/SB, FA-YA/YB, FA-ZA/ZB
Hydraulic Flange Material: Carbon steel: S25C, ASTM A105, 20 #, SGD4K; stainless steel: SUS304, SUS304L, SUS316, SUS316L, SUS321
Manufacturing process: cutting, heat treatment, forging, machining
Manufacturing standards: JB/ZQ4187-97, JB/ZQ4485-97, JB/ZQ4486-97, JB/ZQ4487-97, JB/ZQ4488-97, JB/ZQ4489-97
∷ Hydraulic Flange Standard No.
1. JB/ZQ4187-97A-type split high pressure flange;
2. JB/ZQ4187-97B-type split high pressure flange;
3. JB/ZQ4187-97C-type split high pressure flange;
4. JB/ZQ4187-97D-type split high pressure flange;
5. JB/ZQ4187-97E-type split high pressure flange;
6. JB/ZQ4187-97F-type split high pressure flange;
7. JB/ZQ4485-97 high pressure flange;
8. JB/ZQ4486-97 straight flange;
9. JB/ZQ4487-97 angle flange;
10. JB/ZQ4488-97 intermediate flange;
11. JB/ZQ4489-97 flange;
12 convex welded steel flanges (according JB/T82.1-94);
13 welded steel flange dimensions (PN = 6.3Mpa) (JB/ZQ4461-97);
14 welded steel flange dimensions (PN = 10Mpa) (JB/ZQ4462-97);
15 welded steel flange dimensions (PN = 15Mpa) (JB/ZQ4463-97);
16 welded steel flange dimensions (PN = 25Mpa) (JB/ZQ4464-97);
17 welded steel flange dimensions (PN = 31.5Mpa) (JB/ZQ4465-97);
18 welded steel flange dimensions (PN = 40Mpa) (JB/ZQ4466-97);
19 steel plate welded convex flange (according JB/T81-94);
20. Convex steel pipe flange cover (according JB/T86.1-94);
21 convex steel flange cover (PN = 6.3Mpa) (JB/ZQ4483-97);
22 convex steel flange cover (PN = 10Mpa) (JB/ZQ4484-97).

Metal hose adapter

The utility model discloses a metal hose adapter, the adapter body comprises a cylindrical shape; characterized in that: the adapter body is provided with one or more of the screw, the screw with a locking screw; adapter body end of one end of a tailgate, the end of the baffle is provided with a hole, metal hose fittings through the opening to the adapter body. The utility model metal hose adapter, according to the selection of electrical equipment into the cable connector metal hoses and metal china hydraulic hose, metal hose fittings according to the size of the transition metal hose connector panel mounted connector and metal hose, so that the whole system is naturally smooth; transition joints can either press the need to produce at the construction site can also be mass-produced in the factory according to standard parts, with the use of promotional value; cable can extend the life of the cable to effectively prevent injury by external forces leakage and other security incidents generated.

Corrugated metal hose largely by the bellows

Corrugated metal hose pipe body, plays a role in flexible; nets play a strengthened role in shielding; joint plays a role in the connection. For different application requirements, the connection between them in different ways: Bellows, nets and welded joints in the form of three-part connection, called the welded; mechanical clamping connection form, called mechanical clamping type; In addition, there is combined with the above two methods, called hybrid.
      Nets: nets are a number of shares by the cross-cutting wire or metal tape several blossoms woven by a certain sequence, hose assembly set at a predetermined angle of the outer surface of the metal bellows, plays a role in strengthening and shielding. Nets not only share the metal hose in the axial, radial static load, still pulsating fluid flow along the pipe under the conditions of action to ensure the safe and reliable metal hose work, but also can ensure the corrugated hose is not directly part influenced by the relative friction, impact and other aspects of mechanical damage. Woven nets bellows, its strength can be increased ten times to several times. Maximum shielding capacity can reach 99.95%. Network sets the bellows material is generally the same material, but also to the two materials is used in combination. Only a layer of common metal hose nets; special occasions, there are also woven layers, three layers. According to the bellows diameter sizes and the different requirements, it is often a diameter of 0.3 to 0.8 mm in wire or thickness of 0.2 to 0.5 mm to produce the strip. 4 to 15 per wire, strip each tablet one. Currently, the production of steel mesh cover more than 24 stocks, 36 stocks, 48 ​​stocks, 64 stocks, large diameter of the bellows, and 96 shares, 120 shares and 144 shares. In addition to the main weaving nets parameters (wire) the number of shares, wire diameter, (strip) spindles, thickness, there are coverage, weaving away, weaving angle. They are all important decisions based on the performance of metal hose.
       Connector: The role of the first connector is connected nets with bellows as a whole, while another metal hose fittings and metal hoses or other fittings, devices coupled components. It ensures that the medium in the piping system to work properly. Fitting materials are usually the bellows, the same material nets, stainless steel-based multi. To reduce production costs, some of the larger diameter metal hose is not strong in conveying corrosive or non-corrosive media, the joint can be carbon steel; For corrosive media work in case of metal hose fittings, if the design to take appropriate measures to avoid contact with the medium can also be used to produce steel. Joint structure generally divided into spiral, flanged and fast style three categories: 1, Threaded: diameter is 50 mm below the metal hose connector to withstand high working pressure in the case, mostly threaded main thread when tightened after the two connectors on the inner and outer taper surface work closely together to achieve seal. Cone angle is generally 60 degrees, 74 degrees is also useful. The structure, good sealing, but the installation must ensure two countertop concentricity. In order to solve practical engineering often seen repeated demolition, installation and easy concentric and other issues, can also be designed as conical connector mating with the ball. 2, flanged: diameter of 25 mm above the metal hose joint when subjected to the normal working pressure in the case in the main flange disc, which in the form of tongue and groove sealing fit. Rotating a radial direction, but also axially slidable banjo fitting flange looper tension force of the fastening bolts to connect two bodies. This structure sealing performance is good, but difficult process, the sealing surface is easy to bruise. Quick release is required for special occasions, you can tighten the bolts through the holes cut open, made of quick-release flange. 3, courier formula: diameter of 100 mm below the various metal hose fittings, quick loading and unloading of the required conditions of use, generally use fast style. It is commonly used special fluorine plastic or rubber "O" ring seal. When moving the handle after a certain angle, the equivalent of fingers long thread is locked; "O" ring will be kept more tightly, the sealing performance is better. The structure in the fire, Battlefield, and other quick release must be quick occasion is most appropriate. Within a few seconds, without any special tools equipped with, you can open a group or butt joints.

Welded pipe joints

Material : 20 #, 45 #, Q235, 16Mn, 304,304 L, 316,316 L, 321,201 etc.
Manufacturing standards : AK, AKM, ARK, AKS, AAK, GEV, GUV, GOV, GEAM / GEVA, GUR, GUG, GUL, GELM, GELA, DU, SV, WS, TS-T, SKV, TSKV, RI, VSU , GAV, AV, GV, WV, TV, KV, GSV, WSV, ASKB, B / DB, SM / SMR / SMH, SMW / SMT, KO, JB / T 966, JB / T 6381 ~ JB / T 6385, JB / ZQ 4773 ~ JB / ZQ 4782 , etc.
Product Features: Welded pipe joints is a hydraulic fluid power and general use equipment piping systems essential parts. In a hydraulic system, energy from the hydraulic oil through the hydraulic connections and that the tube hose system for delivery. If you put a hydraulic pump compared to a person's heart , then hydraulic tubing is connected vessels ; modern industry requires increasingly higher hydraulic system operating pressure . High-speed operation of hydraulic equipment requirements of hydraulic systems can withstand high voltage pulse , requires Welded pipe joints in the system must withstand higher pressure peaks and vibration energy to guarantee the normal transport . Its failure will cause the pipeline leak ,hydraulic hose and fittings  a serious cause of pipeline rupture. The first oil pipeline environmental laws and regulations is not allowed. More importantly , the modern large-scale mechanized production equipment shall continue to operate in order to ensure production efficiency , basically does not allow non-normal downtime ; General hydraulic oil for Welded pipe joints is not corrosive , so the hydraulic system commonly used carbon steel welded pipe joints , drinking water or purified water should not be used to connect pipes carbon steel welded pipe joints .
        The traditional brass welded joints using compressed air series , because the compressed air carries moisture build-up inside the tube will corrode if welded joints . Chemical equipment, piping conveying a variety of corrosive fluids usually requires frequent washing with solvent or water , so the general chemical piping must be stainless steel . Welded joints in hydraulic systems have different functions : the high pressure , low pressure return line and suction line . Accompanied by high pressure pipeline strong impact and high turbulence , to ensure the seal in this condition . Suction line liquid flow rate is low , in order to ensure the pumps are not subject to cavitation damage , you must select the appropriate connector , hydraulic hose adapters ensure piping exposed to vacuum and to minimize pressure loss. Select welded joints should know nominal pressure hydraulic pipe fittings . PN is a standard parameter and the system is numerically equal to the maximum working pressure .

Hydraulic hose fittings and joints of ordinary differential

The largest and most significant difference is that the hydraulic pressure is great staggering, hydraulic tubing impact of sudden burst of oil is large. I say this certainly can not replace a dedicated with a common connector, because the hydraulic pressure can all be under great pressure, normal pressure up to 0.5 already dying, now we hydraulic tube fittings gap compared to foreign countries too, the hydraulic network of excellence hydraulic session to remind you a lot of friends to communicate the development of China's own hydraulic tube fittings.

12、Steel fittings classification
Steel accessories can be divided into two categories: standard accessories and optional accessory.
Standard accessories is random with accessories. Although sections of the models are not the same as standard, a common standard components are memory and feeder. Of course, for different models, the memory size and the capacity of the cassette is different. Standard configuration of the situation can be understood through Desc. If the lack of a standard configuration, then, to a certain extent affect the use and performance hose fittings of the product.
Optional accessories is the standard configuration, can enhance the product features, improve product performance parts, is the need for additional purchases. And standard configuration, without the optional accessories will not affect the use of the basic functions of the product. Optional accessories for many types of different products to support an optional product is different, so when choosing an optional accessory should review the product description in advance, so can not be used to buy.

pipe clamps range of applications

1, pipe clamps range of applications
Light series pipe clamps used six kinds of size series of ordinary mechanical pressure pipe, pipe diameter 6-57mm.
Double contact folders used five kinds of tube size series of mechanical pressure pipe, pipe diameter 6-42mm.
Heavy series pipe clamps used in 8 sizes range of high mechanical pressure pipe, pipe OD 8-273mm.
2, pipe clamps material properties
Density, bending strength, impact toughness, compression strength, elastic modulus, tensile strength, heat resistance, color
3, pipe clamps installer
Mounted on welded plate before assembly, in order to better determine the direction of the folder, first proposed in a fixed place and marked, after welding on welding, pipe clamps embedded on the lower half of the body, put the pipe to be fixed. Sprinkle half pipe clamp body and lid, tighten screws. Avoid direct welding pipe clamps have been installed base.
Fitted to rail which can be soldered in basis or with screws, then push into orbit within the rail nut and turn 90 degrees, the lower half of the body embedded nut pipe clamps, valve block put the pipe to be fixed, and put on the upper half of the body and the cover clamps, with screws.
Stacked assembly, rails can be welded on the foundation, or with screws, first install the upper and lower half of the pipe clamp body, put put on the pipe to be fixed on the half pipe clip body, with screws through the locking plate prevent it from turning. Then install a second pipe clamps, as above.
The elbow assembly, the assembly of pipe, the pipe should be made directly at the front and rear with Custer pipe clips. Proposed that the support point is at a fixed position.
? 4, pipe clamps classification
????? Material can be divided into: Steel pipe clamps, steel pipe clamps, stainless steel pipe hydraulic hose adapters clamps, pipe clamps and other materials plastic pipe clamps.
???? According to the shape and the North American standard classifications, reference Ningbo Han Lin Electric Co., with a full round of heavy pipe clamps, pipe clamps full circle of light, long head-tube clip in half, short head in half-tube clip, rotate pipe clamps, rotating with felt pipe clamps, J-tube clip

Hose Cutting Machine - Cutting Machine Readme

I. Overview
DM300-type hose cutting machines, the company is cutting the light of foreign advanced technology, combined with the actual cutting characteristics, development and design of new products. The core of the product use imported dedicated slice slices, cut the tube with stiffness, thermal deformation, pipe cutting fast, low wear, cut free of debris. A balanced feed system, so that the cutting force more evenly. Unique buffering mechanism, so that the cutting process more stable, socketless fitting more secure. The product is suitable for cutting all kinds of wire diameter 55mm less preparation hose, steel wire spiral hose, Gabe tube, thread pipe, hose repair is, the manufacturer equipped with the ideal equipment.
Second, the main technical parameters
Dimensions: 650 × 410 × 425mm
Voltage: 380V 50Hz
Power: 3Kw
Maximum cutting diameter: Φ55 mm
Slice: Φ300 × 3 × Φ32 mm
Weight: 70Kg
Third, the operating instructions
(1) Turn on the power and check the direction of rotation of the dicing sheet direction indicated by the arrow. (Non-inverted)
(2) According to the size of the diameter to be cut, adjust the positioning bolt. Appear inclined to avoid being cut diameter or clip, Kartchner film phenomenon.
(3) Place the tubes are cut, push the feed handle, complete the cutting process.

Metal hose adapter

The utility model discloses a metal hose adapter, the adapter body comprises a cylindrical shape; characterized in that: the adapter body is provided with one or more of the screw, the screw with a locking screw; adapter body end of one end of a tailgate, the end of the baffle is provided with a hole, metal hose fittings through the opening to the adapter body. The utility model metal hose adapter, according to the selection of electrical equipment into the cable connector metal hoses and metal hydraulic hose sleeve  metal hose fittings according to the size of the transition metal hose connector panel mounted connector and metal hose, so that the whole system is naturally smooth; transition joints can either press the need to produce at the construction site can also be mass-produced in the factory according to standard parts, with the use of promotional value; cable can extend the life of the cable to effectively prevent injury by external forces leakage and other security incidents generated.