Technology Index: Material38 CrMoA1A(JIS SACM645)42 CrMo(AISI 4140)Nitriding Layer HardnessHV≥900Nitriding Layer Depth0.5-0.8mmDiameterΦ12-Φ300mmSurface RoughnessRa0.4μmL/D RatioL/D=10-56Cr-Plating Layer Hardness850 HVNitriding FragilityLess than grade twoCr-Plating Layer Depth0.03-0.08mmMaterial：38 CrMoA1ADiameter：Φ12-Φ300mmL/D Ratio：L/D=10-56Nitriding Layer Depth：0.5-0.8mmNitriding Fragility：Less than grade twoNitriding Layer Hardness：HV≥900Surface Roughness：Ra0.4μmCr-Plating Layer Depth：0.03-0.08mmCr-Plating Layer Hardness：850 HVMaterial: the surface tungsten carbide ultra-sound overall spray can improve the wear resistance of the screwHeat-treatment: Vacuum hardening heat treatment process can greatly improve the service life of the three small pieces.While emphasize the development and retainment of high performers, we introduce a series of modern facility and continuously improve our quality control system.Adhering to the customer service philosophy, we keep exceeding customers' expectation as our pursuit.
