Socket coated plastic steel pipe is a type of steel pipe that is treated with a dual coating process, consisting of an inner layer of steel pipe and an outer layer of plastic. The inner steel pipe serves as the main structure, while the outer plastic layer covers the surface of the inner steel pipe, playing a role in corrosion prevention, wear resistance, and protection of the steel pipe. The connection method of socket coated plastic steel pipes adopts socket connection, which has the advantages of convenient and fast installation, good sealing, and long service life