1,plastic PVC/PE Corrugated pipe production line, turn-key ... 63mm 3,Single Wall Corrugated pipe plastic PVC/PE Corrugated pipe production linecorrguated carton production lineplastic pipe ... to 200mm, which are used for wire and cable, and usedas drainage pipes of washing machine, vent ... water drainage, sewage outlet, insulation of wire and cable, heat supply engineering in high building and underground ...