... Corrugated pipe extrusion lineFeatures: Suitable material: PE, PP granules. This line consists of RM series of extruder, mould, moulding machine, ... air cooling unit , counter, coiler, which can continually extrude corrugated pipes in different sizes. ... technique parameter:Pipe diameter range(mm)4.5-99-3232-50Main machine modelSJ-30SJ-45SJ-65Main machine l/d30: ...