With the improvement of people’s living standards, environmental protection awareness and health concerns, a green revolution in the building materials industry has been set off in the field of water supply and drainage. According to a large number of water quality monitoring data, cold-galvanized steel pipes generally rust after less than 5 years of service life, and the iron smell is serious. Residents complained to government departments one after another, causing a kind of social problem. Compared with traditional metal pipes, plastic pipes have the characteristics of light weight, corrosion resistance, high compressive strength, sanitation and safety, low water flow resistance, energy saving, metal saving, improved living environment, long service life, and convenient installation. Favored by the engineering community and occupies a very important position, forming an unreasonable development trend.