twin screw barrel for PVC pipe extruder machine Highest and Stable Output with Less back pressure. Low Melt ... , heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS, AS etcTechnical Index (30g-25000g): Depth of Nitrated Layer: 0.5-0.8mmHardness ... Layer: >2mm LUCH010 twin screw barrel for PVC pipe extruder machine