Plastic Extruder Double Screw Barrels

Specifications 1.Double Screw Barrel for PVC Pipe and Foam 2.Over 30 years experience in screw and barrel 3.Direct manufacturer of screw bar            Plastic Extruder Double Screw Barrel for PVC Pipe and Foam     • Detailed Specifications    Base Material 1)38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11) 3)4Cr5MoSiV1(JIS SKD-61)  4)42CrMo(AISI 4140)  Bimetallic Alloy Materials 1)Fe-based alloy  2)Ni-based alloy/Deloro alloy 3)Co-based alloy  4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide  Double-alloy level Level A - containing Tungsten of 40% Level B - containing tungsten of 25% Level C - containing tungsten of 9.5% Surface Treatment Heat Treatment High Frequency Treatment Nitriding treatment(120 Hours) Depth of Nitrided Layer: 0.5-0.8 mm Hardness of Nitrided Layer: 900-1020Hv (HRC56°-65°) Hard Chrome Plating treatment: Thickness of Hard Chrome Plating Layer: 0.05-0.1…