Epoxy powder coated steel pipes are a highly popular composite pipe at present. Coating by immersion is a technique, and epoxy powder coated steel pipes are composite pipes developed through the hot-dipped galvanizing process. Due to their relatively simple production technology, they offer good flexibility, insulation, corrosion resistance, high-temperature resistance, wear resistance, and tensile strength. They are extensively used in fields such as coal mining, chemical industry, power generation, and fire-fighting water supply.