... and barrel for injection mold machine. it's a special design for injection, based on bimetallic material screw and barrel for plastic injection ... molder machine/molding machineSize: screw diameter:Φ20-Φ500mm Maximum screw ... layer: ≥950HVThickness of Cr coationg layer: 0.03-0.08mmUsed for granulation,PP, PE, PA, PC, ABS,AS etcWe can ...