Quais são os tipos e especificações de brocas helicoidais?
A drill is a rotary tool with cutting ability at the head end Twist Drill Bit Manufacturing process: Generally, carbon steel SK, or high-speed steel SKH2, SKH3 and other materials are milled or rolled and then quenched, tempered, and then ground Production use: It is widely used in the drilling of metal or other materials, […]
Quais são os tipos e especificações de brocas helicoidais? Consulte Mais informação "