Plastic-lined composite pipe, also known as steel-plastic composite pipe, embedded steel-plastic composite pipe with inner reinforcement, is divided into cold water pipe and hot water pipe. Because of its oxygen barrier effect, it can be directly used in direct drinking water projects, and its inner and outer layers are made of plastic material, which has very good corrosion resistance. Widely used in oil and natural gas transportation, industrial and mining pipes, drinking water pipes, drainage pipes and other fields.