extruder screw and barrel for film blowing machine/ wire drawing machine/plastic extruder extruder screw barrel for wire drawing machine and film blowing machine Size: screw diameter:Φ20-Φ500mm ... layer: ≥950HVThickness of Cr coationg layer: 0.03-0.08mmUsed for granulation,PP, PE, PA, PC, ABS,AS etcWe can ... barrels according to the customers requirement extruder screw barrel for wire drawing machine