Shijiazhuang Zhongmei Coal Mine Equipment Co., Ltd.

Anti-collapse High-efficiency Combined Drill Bit

Anti-collapse High-efficiency Combined Drill Bit
Product Detailed

The high efficiency and high strength,Can take reverse rotation

Anti-collapse high efficiency combined drill bit has the high efficiency and high strength, it adopts multistep drilling mode: the first class is two-wing drilling, the second class is expanding bit which adopts three-wing drilling, the third class is anti-collapse drill bit which can take reverse rotation to carry out reverse cutting when you meet the collapse.

Product standard

Boring diameter


Coupling dimension


Special service base on customer request.

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