mining bits
Specifications of bit table(British) | |||||
Type | IADC No. | British(in) | Metric(mm) | Connection(in) | Suitable Formations |
M2 | 124 | 6 3/4 | 171.4 | 3 1/2 | Soft formations with low compressive strength and high drillability |
M3 | 134 | 7 1/2 | 190.5 | 4 1/2 | Soft formations with low compressive strength and high drillability |
M4 | 214 | 8 1/2 | 215.9 | 4 1/2 | Medium to medium hard formations with high compressive strength |
M5 | 244 | 6 3/4 | 171.4 | 3 1/2 | Medium to medium hard formations with high compressive strength |
M6 | 324 | 6 3/4 | 171.4 | 3 1/2 | Hard semi-abrasive and abrasive formations |
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tri-cone rock bit
