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Diameter: φ15-φ500
L/D ratio:15-55
Technical Parameter:
Hardness After Hardening & Tempering:HB280-320
Nitride hardness: 950-1100HV
Nitride layer depth:0.50-0.80mm
Nitride brittleness: Less than 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
Product classification:
According to different ingredents and products the screw can be chosen: general type, pin type, barrier type, separation type, and gas-exhausting/vented type, etc.
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