1.rotary drilling rig rock
2.Metal sealed journal bearing
3.High compressive strength
4.Soft formation
5.Gauge protection
6.Fast drilling rating
7.Good after-sales service
Model | 114-117,127,437,517,617,637 |
Type | TCI bits,steel tooth bits,PDC bits |
Appliable | water well, oil field, construction, geothermal, directional boring, and underground foundation |
Formation | Sticky,soft ,medium,medium-hard ,hard formation |
Bearing | Rubber seal or metal seal |
Our advantage
1. Good quality,reasonable price.
2. ISO9001:2000, ,API certified.
3. Timely delivery.