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Friction Kelly bar
Friction type drill Kelly bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition.The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the rotary passing down the pressure force can produce the friction force. It is simple operation, drilling depth .
it is suitable for soft soil layer and mud sand layer.The complete set of Kelly bar is with light weight, high strength, high linearity of the single drill pipe.; The inner and outer layer collocate reasonably , with good wear resistance plate.. it is greatly to meet the special requirement of the drill rig machines.
序号 |
钻杆外径 |
节数 |
加压键形式 |
单节长度 |
参考深度 |
额定扭矩 |
||
1 |
¢299 |
3 |
4 |
5 |
磨阻式 |
9-14 |
24-65 |
100 -120 |
2 |
¢342 |
3 |
4 |
5 |
磨阻式 |
9 - 14 |
24 - 65 |
100 -120 |
3 |
¢355 |
3 |
4 |
5 |
磨阻式 |
9 - 14 |
24 - 65 |
100-120 |
4 |
¢368 |
3 |
4 |
5 |
磨阻式 |
9 - 14 |
24 - 65 |
150-180 |
5 |
¢377 |
3 |
4 |
5 |
磨阻式 |
9 - 14 |
24 - 65 |
150-180 |
6 |
¢394 |
3 |
4 |
5 |
磨阻式 |
9 - 15 |
24 - 70 |
180-200 |
7 |
¢406 |
3 |
4 |
5 |
磨阻式 |
9 - 15 |
24 - 70 |
180-200 |
8 |
¢419 |
3 |
4 |
5 |
磨阻式 |
9 - 15 |
24 - 70 |
200-230 |
9 |
¢440(445) |
4 |
5 |
6 |
磨阻式 |
9 - 15 |
24 – 85 |
220-260 |
10 |
¢470 |
4 |
5 |
6 |
磨阻式 |
9 - 18 |
24 – 102 |
220-260 |
11 |
¢508 |
4 |
5 |
6 |
磨阻式 |
9 - 18 |
24 – 102 |
260-360 |
12 |
¢530 |
4 |
5 |
6 |
磨阻式 |
9 - 20 |
32 – 114 |
320-400 |
13 |
¢580(575) |
4 |
5 |
6 |
磨阻式 |
9 - 24 |
32 – 138 |
360-420 |
14 |
¢630 |
4 |
5 |
6 |
磨阻式 |
9 - 26 |
32 - 150 |
400-500 |
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