... gas vented screw and barrel for extruding machine Brand name: Titan Material: 38 CrMoAlA gas vented screw and barrel for extruding machineSize: ... : 0.03-0.08mmDepth of alloy layer:2mmUsed for granulation,PP, PE, PA, PC, ABS,AS ... pore barral screws in China. We can design and manufacture high quality screws according to your requests. ... all the time. gas vented screw and barrel for extruding machine