HDPE drainage pipe is a general term for thermoplastic round pipes without internal pressure that are mainly made of high-density polyethylene resin and made by extrusion molding process. HDPE drainage pipe is a replacement product of traditional steel pipes and polyvinyl chloride drainage pipes. It is mainly responsible for drainage tasks such as rainwater, sewage, farmland drainage and irrigation, and is widely used in highways, railway subgrades, subway projects, waste landfills, and tunnels. , green belts, sports fields and drainage fields such as slope protection caused by high water content, as well as underground irrigation and drainage systems for agriculture and horticulture.