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Material：38 CrMoA1A
Diameter：Φ12-Φ300mm
L/D Ratio：L/D=10-56
Nitriding Layer Depth：0.5-0.8mm
Nitriding Fragility：Less than grade two
Nitriding Layer Hardness：HV≥900
Surface Roughness：Ra0.4μm
Cr-Plating Layer Depth：0.03-0.08mm
Cr-Plating Layer Hardness：850 HV
Material: the surface tungsten carbide ultra-sound overall spray can improve the wear resistance of the screw
Heat-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.
