Basial Specification
| Product Name | High Quality 8 1/4'' IADC 517 tricone drill bit rock |
| Size of Rock Bit | 14 3/4''; (374.6mm) |
| IADC Code | 637 |
| Thread Connection | 7 5/8 API reg pin |
| WOB(kN/mm) | 0.5~1.2 |
| RRM(r/min) | 80~40 |
| Formation | hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
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