<thead id="hfljr"><video id="hfljr"></video></thead><span id="hfljr"></span>

      <delect id="hfljr"><sub id="hfljr"><video id="hfljr"></video></sub></delect>


          Screw for Blowing Molding


          Product Description:

          Standard Grade: 38crmoala + Nitriding 140 Hours
          Bimetallic Grade: 38CrMoAIA + Bimetallic Alloy
          Steel Material: 38CrMoALA, SKD61, SKD11, D2 etc.
          Diameter of Screw: D12-D300 mm
          L/D Ratio of Screw: 10-50
          Hardness after Heat treatment: HB240-280
          Nitriding Treatment Time: ≥96 hours
          Surface Hardness degree: 58-64 HRC
          Nitrided Layer thickness: 0.5-0.8mm
          Surface Roughness: Ra0.4 um
          Screw Straightness: 0.015mm
          Cr-Plated Surface Hardness after Nitriding: ≥900HB
          Chromium-Plating Layer Thickness: 0.05-0.10 mm
          Bimetallic Layer Hardness: 58-65 HRC
          Bimetallic Layer Depth: 0.8-2.0 mm 

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

          Imprint | Copyright | Privacy | Terms of Use | Site Map