The drainage pipe mainly undertakes the tasks of rainwater, sewage, farmland drainage and irrigation. Drainage pipes are divided into plastic drainage pipes, concrete pipes (CP), and reinforced concrete pipes (RCP). The specifications of drainage pipes include an inner diameter of DO (100mm-3000mm) and a length of LO (1m-20m) with a pressure index. The caliber of Class I, Class II, and Class III is divided into: plain mouth, groove mouth, socket and spigot, double socket, and steel socket. Production equipment for reinforced concrete drainage pipes: mixing system, pipe mold (flat mouth, groove mouth, socket and spigot mouth, double socket, steel socket), forming equipment (centrifuge, suspension roller machine, vertical axial extrusion forming machine, vertical radial extrusion forming machine, core mold vibration hydraulic forming machine, vertical radial extrusion forming machine, core mold vibration hydraulic forming machine, vibration forming device), feeding machine, steel plate framework rolling welding machine, water pressure machine, external press, etc. The drainage pipe is a new type of corrugated permeable drainage plastic pipe formed by adding other additives to high-density polyethylene (HDPE). The permeable corrugated pipe is made by punching holes in the groove, and the outer circumference of the pipe is wrapped with needle punched geotextile. According to the type of corrugated pipe, it can be divided into single wall permeable corrugated pipe and double wall permeable corrugated pipe. Due to the fact that the pipe hole of this product is located in the trough and is a long strip shape, it effectively overcomes the drawback of flat circular hole products being easily blocked and affecting the drainage effect. For different drainage requirements, the size of the pipe hole can be 10mm × 1mm to 30mm × 3mm, and can be evenly distributed within a range of 360 degrees, 270 degrees, 180 degrees, 90 degrees, etc. It is widely used in drainage fields such as highways, railway embankments, subway engineering, waste landfills, tunnels, green belts, sports fields, and slope protection caused by high water content, as well as underground irrigation and drainage systems in agriculture and horticulture. It, along with soft permeable pipes and plastic blind ditches, has become the three main products in China's civil engineering construction (seepage and drainage). The municipal drainage network can choose double arm corrugated pipes and straight wall pipes depending on the drainage pressure. The straight wall pipe has strong pressure bearing capacity and can be used as a specialized pipeline for large drainage and sewage networks