... 2.Diameter:16-50mm 3.depends on customer' corrugator PVC Single Wall Corrugated Pipe Line Production description:1.Suitable material: PVC ... consists of extruder, mould, forming machine, air/oil cooling unit , counter, coiler, which can continually extrude corrugated pipes in different sizes ... :Welcome to visit us,there is sample at store! PVC Single Wall Corrugated Pipe Line