Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2017-07-21 10:12
64
Size (in) | Size (mm) | IADC | WOB (kN/mm) | RPM (r/min) | Applicable Formations |
8 1/2 | 215.9 | 125 | 0.3-0.85 | 180-60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone and more |