... 16-50mm,Extruder model LSJ65/30. Single-wall corrugated pipe extrusion line:it mainly uses PE,PP,PVC ... the corresponding moulds inside and outside produces smooth uniform corrugated pipes.The forming blocks made of hard steel,dealed ... ,in forming do from the running tunnels.Produced pipes by the production line are mainly used in ... pipe,washing machine drains,vacuum cleaner,ventilation pipes,tubes,etc.