1)used for oil filed, waterwell
2)certified by ISO9001&API
3)competitive price
2)certified by ISO9001&API
3)competitive price
4)high reliability and long working life
5)new type of lubrication sysytem
6)improve bit stability, prevent bit diameter shrinkage and extend
7)inclined double-stable head O.D.
1.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
2.Tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life
3.High precision bearing with two thrust faces
4.The advanced metal seal package consists of two metal seats and two elastic energizers.
5.Low compressive strength,suitable for hard abrasive dissection such as hard courts, hard rock, andradite
size | Bit Type | |
In. | mm | |
6 | 152.4 | 136, 127 |
6 1/2 | 165.1 | 126,127 |
7 1/2 | 190.5 | 126, 136, 217, 227 |
8 1/2 | 215.9 | 114, 124, 126,127 |
9 1/2 | 241.3 | 126, 127 |
9 5/8 | 244.5 | 127 |
9 7/8 | 250.8 | 127 |
12 1/4 | 311.1 | 114, 126, 127 |
13 5/8 | 346.0 | 117, 126, 127 |
14 3/4 | 374.6 | 124 |
15 | 381.0 | 124 |
15 1/2 | 393.7 | 124 |
17 1/2 | 444.5 | 114, 117, 124, 126, 216 |
22 | 558.8 | 124 |
24 | 609.6 | 124 |
26 | 660.4 | 114 |
