... have specialized in the field of injection and extruder machine parts.Our advantages: screw and barrel for ... developing screw and barrel for more injection and extruder machine models- Main market: South America,Eastern Europe, ... , alloy coating spraying, heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS .etcDepth of Nitrated Layer: ... Screw Barrel abs,pvc,pp,pe,pa extruder machine twin screw and barrel