близнец конической винтовой ствол винты баррелей bimetalli

twin conical screws barrels screw barrel,bimetallic screw barrel,extruder screw barrel,twinconical screw barrel,twin conical counter rotating screws barrels,twin screws barrels,plastic machinery parts,plastic machinery components Depth of Nitration Layer: 0.5-0.8mm Hardness of Nitration: 950-1020Hv Fragility of Nitration: Less than grade 1 Surface Roughness: Ra 0.4 um Streightness of Screw: 0.015mm Surface Hardness of Nitrated Cr coating Layer: >=950Hv The Thickness of Cr Coating Layer: .03-0.08mm Hardness of Alloy Plating: HRC55-620 Depth of Alloys Layer: >2.5mm -4mm Introduction: Used for producing PA, EVOH, EAA, PC etc. We can supplyall types of screws and barrels according to clients' requirements.