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الشخص الذي يمكن الاتصال به Ms. vivi
Huanghe, Zhengzhou, Henan
Button drill bit is mainly used with the hydraulic rock drill (or pneumatic drilling machines) and hydraulic drill rod (pneumatic rod), proceeding the drilling work by using different threads and rods.Diameter from ¢ *2 - ¢ **3mm, mainly used in underground mines, open mine, blast furnace openings of steel mills and other fields, fast and easy sharpening.
