2.Washers are mainly divided into High
tensile washers and Low
carbon steel washers
The materials of High tensile washers: 45C,50C,50Mn, 60Mn.
Low carbon steel washers is made from scraps.
The surface coloration includes: Plain, ZP, YZP, HDG, Mechanical Zinc Plating, Black.
3.The materials of stamps parts: Q235 and Q345
The surface coloration includes: Plain, ZP, YZP, HDG, Black,Mechanical Zinc Plating,Nickel Plating