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SKG series10 58 chisel tooth tricone rock bit rotary rock bit hole opener

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  • Deep Drilling in Crystalline Bedrock | Drilling Rig |

    2018-12-10 · The diamond core bit performance data summarized in Table 3 for rotary table drive, large hole diameter, and wide kerf cutting configuration indicate that, for crystalline rocks: (1) bit life is usually less than 1 m (3 ft) and (2) average core bit penetration rate is about 0.9 m/h (3 ft/h).

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