The processing methods of
3pe anti-corrosion steel pipes are generally divided into two types: winding type and round die covering type; both are composed of 3-layer structure: the first layer of epoxy powder (FBE>100um), the second layer of adhesive (AD) 170~250um, The third layer of polyethylene (PE) is 2.5~3.7mm; in actual operation, the three materials are mixed and integrated into one, and after processing, they are firmly combined with the steel pipe to form an excellent anti-corrosion layer. (After anti-corrosion in this way, it also has good corrosion resistance and impact resistance under low-temperature conditions, and the PE water absorption rate is low (less than 0.01%). It also has high epoxy strength, low PE water absorption, and good hot melt adhesive softness. etc., have high anti-corrosion reliability) and because such 3pe anti-corrosion steel pipes have extremely high sealing properties, long-term operation can greatly save energy, reduce costs, and protect the environment. It has strong corrosion resistance, simple and fast construction, and a service life of 30-50 years. Therefore, 3pe anti-corrosion steel pipes are widely used in long-distance transmission pipelines such as natural gas, petroleum, chemicals, electricity, heat, water supply and drainage, steam heating, pressure steel pipes for hydropower stations, thermal power generation, water sources, and engineering fields such as piling bridges, and steel structures.
