120m Interlocking Kelly Bar For Rotary Drilling Rig
Interlock Kelly bar adopts the international advanced six-ribs distribution technology. The inner keyboards and outer keyboards are manufactured from overall forging and pressing high-tensile steel . The special heat treatment which make this style Kelly bar with high abrasion resistance, compression resistance and excellent welding properity.
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No. |
OD |
Section |
Way of crowding |
Length of per section(m) |
Drill depth | Torque | ||
| 1 | ¢299 | 3 | 4 |
(interlock-type) | 9-12 | 24-45 | 100 -120 | |
| 2 | ¢342 | 3 | 4 |
(interlock-type) | 9 - 12 | 24-45 | 100 -120 | |
| 3 | ¢355 | 3 | 4 | (interlock-type) | 9 - 14 | 24 - 56 | 100-120 | |
| 4 | ¢368 | 3 | 4 |
(interlock-type) | 9 - 14 | 24 - 56 | 150-180 | |
| 5 | ¢377 | 3 | 4 |
(interlock-type) | 9 - 14 | 24 - 56 | 150-180 | |
| 6 | ¢394 | 3 | 4 |
(interlock-type) | 9 - 15 | 24 - 58 | 180-200 | |
| 7 | ¢406 | 3 | 4 |
(interlock-type) | 9 - 15 | 24 - 58 | 180-200 | |
| 8 | ¢419 | 3 | 4 |
(interlock-type) | 9 - 15 | 24 - 58 | 200-230 | |
| 9 | ¢440(445) | 3 | 4 |
(interlock-type) | 9 - 15 | 24 – 58 | 220-260 | |
| 10 | ¢470 (482) | 3 | 4 |
(interlock-type) | 9 - 16 | 24 – 60 | 220-260 | |
| 11 | ¢508 | 3 | 4 |
(interlock-type) | 9 – 18 | 24 – 68 | 260-360 | |
| 12 | ¢530 (540) | 3 | 4 | 5 |
(interlock-type) | 9 – 20 | 32 – 92 | 320-400 |
| 13 | ¢580(575) | 3 | 4 | 5 |
(interlock-type) | 9 – 20 | 32 – 92 | 360-420 |
| 14 | ¢630 | 3 | 4 | 5 |
(interlock-type) | 9 - 22 | 32 - 102 | 400-500 |
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