Diamond drill heads provide large penetrations per flight is recommended when drilling at great depths in the rocks of medium hardness and hard.
Specifications
| IADC CODE | M715 |
| The number of blades | 18 |
| Square grooves | 0.8~1.5 in2 |
| The structure of the incisors | Natural diamond |
| The bearing length part | 1-1/2" (38.1 mm) |
| Torque the upper buckle | 13.4~16.3 KN•m |
| The size of core barrel | 6-3/4"×4" |
Performance parameters
| Output volume | 10~30 L/S |
| The speed of rotation | 40~80RPM |
| The load on the drill bit | 30~80 KN |