The 3 Layer PE Steel Pipe Anti-Corrosion production line is used to apply anti-corrosion coatings to steel pipes of various diameters in factories and is widely applied in various engineering constructions, especially in heating, gas, oil fields and other fields. It is a kind of anti-corrosion structure composed of a bottom layer of epoxy powder, an middle layer of adhesive and an outer layer of polyethylene. It has the advantages of high mechanical strength, excellent electrical insulation performance, high degree of mechanization of production lines, relatively stable process parameters and no environmental pollution.