| Customization: | Available |
|---|---|
| Warranty: | 3 Months |
| Manufacturing Process: | Forging |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
| IADC | WOB(kN/mm) | RPM (r/min) | Suitable formation |
| 417 | 0.35~0.90 | 140~70 | Very soft with low compressive strength and high drillability,such as shale,clay,sandstone and conglomerate,etc. |
| 437 | 0.35~0.95 | 140~60 | Very soft with low compressive strength and high drillability,such as shale,clay,sandstone and conglomerate,etc. |
| 517 | 0.35~1.05 | 120~50 | Soft with low compressive strength and high drillability,such as shale,clay,sandstone and soft limestone,etc. |
| 537 | 0.35~1.05 | 110~40 | Medium soft with low compressive strength and harder abrasive stringers,such as hard shale,hard gypsolyte,soft limestone,sandstone |
| and dolomite with stringers,etc. | |||
| 617 | 0.35~1.05 | 80~40 | Medium hard with high compressive strength and thick&hard stringers,such as hard shale,limestone, sandstone and dolomite,etc. |
| 637 | 0.70~1.20 | 70~40 | Medium hard with high compressive strength and high abrasiveness,such as limestone,dolomite, sandstone and chert.ect. |
| Note: The upper limits of WOB and RPM in above table should not be used simultaneously | |||
){kind=link}