At present, the overall Best step drill bit is made of CBN full grinding, and the material is mainly high speed steel, hard alloy and so on. The processing accuracy is high. According to the different processing conditions, the surface coating can be treated to prolong the service life of the tool and enhance the tool durability of step drill bit uses.
2022/12/16
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
