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80/156 conical twin barrel screw manufacturing China for PVC wood plastic foam board

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  • Alloy depth : 1.5-3MM
  • Alloy hardness : HRC55-65
  • applications : For PVC products
  • Brand : BAIJIU
  • Material : 38CrMoAIA, SKD61,DC53
  • Model : 80/156, 92/188
  • Nitrided case depth : 0.5-0.8mm
  • Nitrided hardness : HV850-1050
  • screw straightness : 0.015mm
  • Surface roughness : Ra 0.4