Description

Material：*8 CrMoA1A
Diameter：Φ**-Φ**0mm
L/D Ratio：L/D=****6
Nitriding Layer Depth：0.**0.8mm
Nitriding Fragility：Less than grade two
Nitriding Layer Hardness：HV≥**0
Surface Roughness：Ra0.4μm
Cr-Plating Layer Depth：0.***0.*8mm
Cr-Plating Layer Hardness：**0 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.