... /PP/PVC Single Wall Corrugated Pipe Extrusion Line,Model LPBG50,Diameter ranger 16-50mm,Extruder model LSJ65/30. Single-wall corrugated pipe extrusion line:it ... the hardness of the molding module and precision molding machine for the closed strycture,module link in the overall ... pipes by the production line are mainly used in wire and cable products threading pipe,washing machine drains,vacuum cleaner, ...