60mm nitrited screw barrel for PE extruder machine 1. High quality competitive price 2. Better ... performance longer life time 60mm nitrited screw barrel for PE extruder machineScrew Diameter: Φ15mm-Φ300mmMaterial: 38CrMoAlA; SKD61; SKD11; 40Cr; ... : nitriding treatment, alloy coating spraying, heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS, AS etcTechnical Index (30g-25000g): Depth ...