Application of steel-lined polyethylene pipes: suitable for transportation of general corrosive liquid media, and more suitable for transportation of domestic water and drinking hot and cold water. When water is delivered, it does not affect water quality and meets food hygiene requirements. Steel wear-resistant high-density polyethylene The pipe can be widely used for the transportation of solid-liquid slurry such as coal and ore. The steel-lined polyethylene pipe is manufactured by a multifunctional composite pipe machine. It is formed at one time without seams. The authentic tight lining technology is flat and firm and never falls off. Used in petroleum, chemical, electric power, tap water and environmental protection industries.