(1)one mould for two pipe , (2)good material for screw and barrel ,stabile ... 63mm ,one mould for two dies Rigid PVC pipe production line is mainly used in the manufacture of ... set is composed of the conical twin-screw extruder, vacuum forming table , dragger, cutter, stirring up rack etc. ... set according to the clients requirements. Double pipe extrusion machine (passed ISO9001:2000 and CE certificate)