Parallel twin screw extrusion line 1)Model:SJP 2)Screw Diameter:75-135mm ... double output parallel twin screw extrusion line is a kind of special equipment forextruding of PVC powder.1)With different sorts ... and auxiliary machines,it can produce all sortsof PVC plastic pipe material,bar material and granulation.2)The screw ... ,heat emission area is enlarged,thecooling is rapid. PVC pipe extrusion line