PE anticorrosive steel pipe (tube) is used in different working conditions, to slow or prevent pipeline outer medium under the action of chemical, electrochemical or eroded by microbial metabolic activity and metamorphism in the outer wall coating layer 2 or layer 3 polyethylene (PE) pipe in order to achieve anticorrosive, 3 PE anticorrosive pipe service life extension of 3-5 times.: the bottom layer is fused epoxy (80 m);The middle layer is adhesive (170 -- 250 m);The surface layer is extruded polyethylene (about 2mm).The total thickness of protective layer is about 1.8-3.7mm.In the three-layer structure, the main role of fused epoxy powder coating is to form a continuous coating film and directly bond with the surface of the steel tube, with good chemical corrosion resistance and anti-cathodic stripping performance;It reacts with the active group of the interlayer adhesive to form a chemical bond, which ensures that the overall anti-corrosion layer has a good bond at a high temperature.
The interlayer is usually a copolymer binder, 182 of which is mainly composed of polyolefin, and 3278 is currently widely used as a vinyl copolymer adhesive.The polar functional group of the 1756 copolymer adhesive can react with the epoxy group of the fused epoxy powder coating to form hydrogen bond or chemical bond, so that the middle layer can form a good bond with the bottom layer.But the non-polar ethylene part and the surface layer polyethylene has the very good affinity to cooperate, therefore the intermediate layer and the surface layer also has the very good adhesive performance.The main function of polyethylene surface layer is to play the role of mechanical protection and anti-corrosion, and the traditional two-layer structure polyethylene anti-corrosion layer has the same role.
Cangzhou Steel Pipe Group (CSPG) Co., Ltd. is a large-sized, key metallurgic enterprise of Hebei Province in North China, whose history dates back to 1994. CSPG currently em/paces six member companies with products varying from SSAW, LSAW, ERW, seamless steel pipes to 3PE pipes, galvanized pipes, casing pipes, etc. A Joint-stock corporation, CSPG occupies an area of 600,000 square meters with a total asset of $530 million.
Specialized in the production of straight welded pipe spiral pipe galvanized pipe 3PE/3PP/FBE/TPEP internal and external epoxy powder internal and external epoxy resin cement mortar two cloth three oil buried pipeline IPN8710 non-toxic drinking water internal and external plastic coated lining plastic and other anti-corrosion pipe fittings for oil and gas pipeline water conservancy projects