... Diameter ranger 16-50mm,Extruder model LSJ65/30. Single-wall corrugated pipe extrusion line:it mainly uses PE,PP,PVC as raw material ... through the corresponding moulds inside and outside produces smooth uniform corrugated pipes.The forming blocks made of hard steel,dealed with ... are mainly used in wire and cable products threading pipe,washing machine drains,vacuum cleaner,ventilation pipes,tubes,etc.