Pipe is used to make pipe fittings of the material, different pipe fittings to use different pipes, the quality of pipes directly determines the quality of pipe fittings, construction projects, power plants, chemical plants and so on use this kind of pipes, there is an implementation standard GB/T5310. For high-pressure boilers: there is an executive standard GB/T8163. Seamless steel pipe for conveying fluid: there is an executive standard GB3087. Seamless steel tube for low-pressure boiler: there is an executive standard GB/T9948. Seamless steel pipe for petroleum cracking: there is an executive standard GB/T14976. Stainless steel seamless steel pipes for fluid transportation, common materials are alloy (15CrMo, 12Cr1MoV), carbon steel (10#, 20#, 45#), stainless steel (304, 316).

PipeIt is a necessary material for construction projects, commonly used water supply pipes, drainage pipes, gas pipes, heating pipes, wire conduits, rainwater pipes, etc., with the development of science and technology, the pipes used in home decoration have also experienced the development of ordinary cast iron pipes→ cement pipes→ (reinforced concrete pipes, asbestos cement pipes), → ductile iron pipes, galvanized steel pipes→ plastic pipes and aluminum-plastic composite pipes.

(1) Water supply pipes: galvanized steel pipes, stainless steel pipes, plastic-coated steel pipes, copper pipes, aluminum-plastic composite pipes, ABS plastic pipes, polyethylene pipes, polypropylene pipes, etc.

(2) Drainage pipes: steel pipes, cast iron pipes, socket prestressed reinforced concrete pipes and socket self-stressed reinforced concrete pipes, GPR polyester resin pipes, HOBAS centrifugal casting glass fiber reinforced polyester resin pipes, polyethylene pipes, PVC plastic pipes, etc.

(3) Heating and gas pipes: galvanized steel pipes, CPVC plastic pipes, ABS plastic pipes, polyethylene pipes, etc.

(4) Wire sleeve: magnetic tube, aluminum-plastic composite tube, etc.

(5) Rainwater pipes: iron pipes, cast iron pipes, aluminum-plastic composite pipes, PE plastic pipes, etc.