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          Screw and Barrel for PE/PVC Extruder


          Basic Infornation:
          Standard Grade: 38crmoala + Nitriding 140 Hours
          Bimetallic Grade: 38crmoala + Bimetallic Alloy
          Diameter of Screw: D12-D300 mm
          L/D Ratio of Screw: 10-50
          Nitriding Layer Depth: 0.5-0.8mm
          Nitriding Layer Hardness: 950-1020hv
          Nitriding Fragility: Less Than Grade Two
          Surface Roughness: Ra 0.4um
          Cr-Plating Layer Hardness: 850 Hv
          Cr-Plating Layer Depth: 0.03-0.08 mm

          Copyright 2008,Zhoushan Jianghai Screws Manufacture Co., Ltd. All Rights Reserved.

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