Manufacturer price customization 3pe anti-corrosion steel pipe spiral pipe 3pe anti-corrosion gas pipeline anti-corrosion

Description :

　　Many people only know one thing about the uses of 3PE anti-corrosion steel pipes, but they do not know the other. Its function is really broad, and it is suitable for underground water supply and drainage, underground spraying, positive and negative pressure ventilation, pumping, fire sprinkler and other pipe networks in coal mines. Thermal power plant process water waste residue and return water transportation pipeline. The water supply pipelines for anti spray and sprinkler systems have greater applicability. Cable protection sleeves for power, communication, highways, etc. Suitable for high-rise building water supply, heating network, water supply engineering, gas transmission, buried water transmission and other pipelines. Process pipelines for transporting corrosive media in industries such as petroleum transportation pipelines and printing and dyeing.

　　3PE internal fusion bonded epoxy anti-corrosion steel pipe is an upgraded product based on the outer single-layer polyethylene internal epoxy composite steel pipe, and is currently the anti-corrosion form of steel pipes for buried long-distance pipelines. A new type of anti-corrosion production line for large-diameter pipelines independently developed by the anti-corrosion pipe industry. The outer wall adopts a three-layer structure of hot-melt bonding and winding process, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene forming the anti-corrosion layer. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, where the powder is uniformly coated on the surface of the pipe body after high-temperature heating and fusion, forming a steel plastic alloy layer, abbreviated as TPEP steel pipe (T, three layers of English Three's sho letter, PE refers to polyethylene, EP refers to epoxy resin). The 3PE anti-corrosion steel pipe structure consists of the following three layers: the bottom layer is fusion bonded epoxy (≥ 80 μ m); The middle layer is adhesive (170-250 μ m); The surface layer is extruded polyethylene (about 2mm).

　　The total thickness of the protective layer of the 3PE anti-corrosion steel pipe is about 1.8-3.7mm. In the three-layer structure, the main function of the fusion bonded epoxy powder coating is to form a continuous coating film, directly bond with the surface of the steel pipe, and have good chemical corrosion resistance and peel off performance; Reacts with the active groups of the intermediate layer adhesive to form a chemical bond, ensuring that the overall anti-corrosion layer has good adhesion at higher temperatures. The intermediate layer is usually a copolymer adhesive, which is mainly composed of polyolefin. Currently, ethylene based copolymer adhesives are widely used. The functional groups of the Ji part of the copolymer adhesive can react with the epoxy groups of the fusion bonded epoxy powder coating to form hydrogen bonds or chemical bonds, forming a good bond between the intermediate layer and the bottom layer; The non rigid ethylene part has a good affinity with the surface layer polyethylene, so the intermediate layer also has good bonding performance with the surface layer. The main function of polyethylene surface layer is to provide mechanical protection and anti-corrosion, which is the same as the traditional two-layer structure polyethylene anti-corrosion layer.

　　The service life of 3pe anti-corrosion pipes is extended by 3-5 times. The bottom layer is fusion bonded epoxy (≥ 80 μ m); The middle layer is adhesive (170 to 250 μ m); The surface layer is extruded polyethylene (about 2mm). The total thickness of the protective layer is about 1.8 to 3.7mm. In the three-layer structure, the main function of the fusion bonded epoxy powder coating is to form a continuous coating film, directly bond with the surface of the steel pipe, and have good chemical corrosion resistance and peel off performance; Reacts with the active groups of the intermediate layer adhesive to form a chemical bond, ensuring that the overall anti-corrosion layer has good adhesion at higher temperatures. The intermediate layer is usually a copolymer adhesive, which is mainly composed of polyolefin. Currently, ethylene based copolymer adhesives are widely used. The functional groups of the Ji part of the copolymer adhesive can react with the epoxy groups of the fusion bonded epoxy powder coating to form hydrogen bonds or chemical bonds, forming a good bond between the intermediate layer and the bottom layer; The non rigid ethylene portion has a good affinity with the surface layer polyethylene.

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