Bore Piling Kelly Bar Construction Rotary Rig Kelly Bar Piling Rig Parts
JTHL Kelly bars are key components in the execution of boreholes with hydraulic rotary drilling rigs. They transfer the torque of the rotary drive and the crowd pressure of the crowd system concurrently to the drilling tool. A Kelly bar consists of 3 – 5 telescopic tubular sections with a system of drive keys and lock recesses, welded onto their outer surfaces.
Specification
| No. | Diammeter of The First | Sections | Sections | Sections | Key Pressure Type | Length of per section(m) | Drill depth | Torque(KN.M) |
| 1 | ¢299 | 3 | Interlocking | 9-16 | 24-45 | 100 -120 | ||
| 2 | ¢342 | 3 | 4 | Interlocking | 9-16 | 24-45 | 100 -120 | |
| 3 | ¢355 | 3 | 4 | Interlocking | 9-16 | 24 - 56 | 100-120 | |
| 4 | ¢368 | 3 | 4 | Interlocking | 9-16 | 24 - 56 | 150-180 | |
| 5 | ¢377 | 3 | 4 | Interlocking | 9-16 | 24 - 56 | 150-180 | |
| 6 | ¢394 | 3 | 4 | Interlocking | 9-16 | 24 - 58 | 180-200 | |
| 7 | ¢406 | 3 | 4 | Interlocking | 9-16 | 24 - 58 | 180-200 | |
| 8 | ¢419 | 3 | 4 | Interlocking | 9-16 | 24 - 58 | 200-230 | |
| 9 | ¢440 / ¢445 | 3 | 4 | Interlocking | 9-16 | 24 – 58 | 220-260 | |
| 10 | ¢470 | 3 | 4 | Interlocking | 9-16 | 24 – 60 | 220-260 | |
| 11 | ¢482 | 3 | 4 | Interlocking | 9-16 | 24 - 60 | 220-260 | |
| 12 | ¢508 | 3 | 4 | Interlocking | 9-16 | 24 – 68 | 260-360 | |
| 13 | ¢530 | 3 | 4 | 5 | Interlocking | 9-16 | 32 – 92 | 320-400 |
| 14 | ¢540 | 3 | 4 | 5 | Interlocking | 9-16 | 32 - 92 | 320-400 |
| 15 | ¢580 / ¢575 | 3 | 4 | 5 | Interlocking | 9-16 | 32 – 92 | 360-420 |
| 16 | ¢630 | 3 | 4 | 5 | Interlocking | 9-16 | 32 - 102 | 400-500 |
FAQ
1.Are you Factory?
Ans: Yes,we foucs on manufactuer kelly bars for more than 17years old.Our factory locted in Shandong now,own two factories .
