





Categories: HDD Series, Pilot Bit
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| RPM(r/min) |
180~40
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| WOB(KN) |
76~167
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| Formations |
Hard formations with high compressivestrength, such as hard shale, limestone,
sandstone, dolomite, hard gypsum, chert, granite, etc. |
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In hard rocks drilling, working life of pilot tricone bits is very important to guarantee crossing fisnished at one time. Metal sealed bearing tricone bits is the only one choice to drill very hard and very long rocks crossing.




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