Industrial details of 3PE anti-corrosion steel pipes for oil and gas

3PE anti-corrosion steel pipe anti-corrosion structure: the first layer of epoxy powder, the second layer of adhesive (AD) 170 ~ 250um, the third layer of polyethylene (PE) 1.8 ~ 3.7mm (ordinary grade ~ reinforced grade) The three materials are integrated and firmly combined with the steel pipe to form an excellent anti-corrosion layer. (φ30mm-φ1020mm) Three-layer polyethylene anti-corrosion is currently one of the main technical systems for external anti-corrosion of internal and external buried steel pipes. It has good anti-corrosion performance, low water absorption rate, high mechanical strength, and other properties. In recent years, it has been more and more widely used in internal buried water, gas, and oil pipelines.

3PE anti-corrosion steel pipe parent materials include seamless steel pipes, spiral steel pipes, and straight seam steel pipes. The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the petroleum steel pipe industry for its good corrosion resistance, water vapor permeability resistance, and mechanical properties. 3PE anti-corrosion steel pipe - the anti-corrosion layer is crucial to the life of buried steel pipes. Some steel pipes of the same material are buried underground for decades without corrosion, while others leak in a few years. This is because they use different external anti-corrosion layers. Therefore, the anti-corrosion forms of buried oil and gas steel pipes usually include internal anti-corrosion, external anti-corrosion, cathodic protection, and ground anti-corrosion. Requirements for anti-corrosion coatings: good corrosion resistance and construction performance against soil, water, and mold. Good electrical insulation. When used in conjunction with cathodic protection, the anti-corrosion coating should have a certain ability to resist cathodic stripping strength. Sufficient mechanical strength. To ensure that the coating is not damaged under transportation and soil pressure. 3PE anti-corrosion steel pipe price product features: hygienic and non-toxic, no scale accumulation, no microbial growth, and guaranteed fluid quality. Resistant to chemical corrosion, soil, and marine biological corrosion, resistant to cathodic stripping, mature installation technology, convenient and fast, and similar to ordinary galvanized steel pipe connections. Good weather resistance, suitable for harsh environments such as deserts and saline-alkali. The steel pipe wall is smooth, the transportation efficiency is improved, and the service life is long. Vinyl copolymer adhesive is widely used at present. The polar functional groups of the copolymer adhesive can react with the epoxy groups of the fused epoxy powder coating to form hydrogen bonds or chemical bonds so that the middle layer and the bottom layer form a good bond.