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Haitian Injection Machine Screw Barrel

Screw diameter: Ф20-Ф220  
Mould clamping force: 100KN-35000KN     
Shot weight:30-30000G
Screw can be mated with different heads of screw.
Cyclinder can be mated with differernt sprinkler heads.
Technical Parameter:
Hardness After Hardening & Tempering:HB280-320
Nitrided hardness: 950-1100HV 
Nitrided layer depth:0.50-0.80mm
Nitrided brittleness: ≤2 level
Surface roughness: Ra 0.4μm
Linearity of screw: 0.015mm/m
Bimetallic layer depth: ≥3mm
Bimetallic hardness: HRC60-72
Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.025~0.10mm