... pvc tubes extrusion line 1.Diameter:16~630mm 2.Produce rate:6m/min 3. Main motor:Siemens 4.Warranty time:one year pvc tubes extrusion ... supply and drainage construction, cable supporting, thickness of pvc plastic pipe, The lines have conical twin-screw extruder, vacuum ... extruding, but also achievesthe minimum stress and highest pipe quality brought by low melting temperatureAdopting high efficiency ...