•The material of our product is from Xining Special Steel Co LTD, which has the better quality than other suppliers.
•Product material 42CRMO,20CRMO,45#,40CRNIMOA,20#
•Shipment with Xining material sheet, quenching and tempering sheet, product size test report, product sample block.
•The product surface is treated with high phosphorus nickel plating, the plating is 0.02+0.00254mm thick.。
•The surface hardness of the plating is not less than HRC50。
•The plating surface was free of rust after 96 hours salt spray test (ASTM B117)
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