Product Introduction:

Screw out diameter D: 15mm≤d≤300mm
Screw length L: L≤10000mm
Nitriding hardness: HV≥900
After grinding 0.20mm, HRC ≥760 (38CrMoALA);
Nitrided brittleness: ≤2 level
Surface finish Ra: Ra0.4µm
Straightness: 0.015mm
Thickness of bimetallic layer: 1.5-2.0mm
Hardness of bimetallic layer: HRC56-60
Thickness of chrome plating layer: 0.03-0.05mm