برغي بثق واحد ثنائي المعدن وبرميل لآلة الطارد لـ pp.pe.pvc

bimetallic single extruder screw and barrel for extruder machine for pp.pe.pvc Screw Diameter : 12mm~300mm Application :  film pipe Plastic processed  :  pp pe Technical Parameter  Nitride Case Depth 0.5mm-0.8mm Nitride Hardness 1000-1100HV Nitride Brittleness ≤Grade One Surface Roughness Ra0.4um Screw Straightness 0.015mm Alloy Hardness HRC68-72 Alloy Depth 0.5mm-0.8mm Chromium Coating Thickness   0.025~0.10mm Material & Technologies  SKD61(H13)...