Hubei St. Bairui Diamond Tools Co., Ltd. / 2022-07-04
=== Base Info ===
=== Description ===
Material of screw | 38CrMoAlA |
Surface treatment | Nitride with thickness 0.4-0.6mm |
Rigidity | (HV)740-940 |
Surface roughness | Ra≤0.8um |
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