... extruder SJZ series conical double-screw plastic extruders are special equipments which can extrude and mold by using various kinds of ... kinds of molds and auxiliary machines, it can produce various PVC pipes,profiles,sheets,plates,bars and granulation.wpc extruder ... mechanism. The whole line include ,Plastic powder charger,SJZ conical twin screw extruder,mould,vacuum calibration table,haul-off,cutter ...