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

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.

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 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.

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 hydraulic hose sleeve 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 hose fittings, 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.

the structure and properties of metal hose

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 woven according to certain parameters. Hose connectors at both ends of piping or equipment in accordance with the user's joint form prepared.
        Bellows hose is made of hydraulic hose sleeve stainless steel seamless or longitudinally welded stainless steel thin walled tube through precision molded plastic deformation. Bellows hose contour determines the elasticity of softness and fatigue resistance, easy to absorb all kinds of sports deformation and cyclic loading, especially to meet the system larger displacement compensation.
        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.