| Customized: | Non-Customized |
|---|---|
| Standard: | AISI, API |
| Length: | Taper-length |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| FORMATION | USED IN | COMMON IADC |
| SOFT | Clays, coal, salts, shales, soft limestone, discontinuous sands etc.. |
114-117 |
| MEDIUM | Sedimentary rocks, limestone, sandstone, slate etc. |
121-137 |
| HARD | Varieties of silica, basalt, dolomite, compact sands, limestone etc. |
213-217 |
| VERY HARD | Marble, quartzite, granite, gneiss, pyrite, etc |
337 |
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