... size extruder screw barrel for film blowing machine and wire drawing machine Size: screw diameter:Φ20-Φ500mm Maximum screw length:10000mm Barrel inner bore ... of Cr coationg layer: 0.03-0.08mmUsed for granulation,PP, PE, PA, PC, ABS,AS ... can manufacture various kinds of screw barrels according to the customers requirement Extruding Screws Plastic Film Blowing Machine Extruder Screw and Barrel