... 20-63mm PP-R pipe extrusion line 1.PP-R hot,cold water pipe 2.reasonable design 3.convenient operation 4.CE&ISO9001:2000 PP-R pipe extrusion lineThis production ... line is composed of single screw stem extruder, vacuum ... , Russia, Canada, Brazil, Iran, New Zealand and so on. PP-R ,PE,PP pipe extrusion line