Anti-collapse High-efficiency Combined Drill Bit
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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 | φ76,φ94,φ110 |
Coupling dimension | 18X18,24X24 |
Special service base on customer request. |