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Parallel Twin Barrel Screw Is Suitable for PVC Decorative Plate

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  • Nitrided hardness : HV850-1050
  • nitrided case depth : 0.5-0.8mm
  • Surface roughness : Ra 0.4
  • screw straightness : 0.015mm
  • alloy hardness : HRC55-65
  • alloy depth : 1.5-3MM
  • Material : 38CrMoAIA, SKD,DC53