... each screw and barrel from shenglong machinery. Furthermore, we have Extruder screw & barrel ... screw barrel,conical twin screw barrel,parallel twin screw barrel. twin screw barrel,bimetallic screw barrel, screw barrel for injection molding machine,screw barrel for extruder,screw barrel for rubber ,screw barrel for shoe making machine,screw barrel for rubber & plastic machine. Rubber Screw Barrel ...