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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

Name:Friction Kelly Bar
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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 and mud sand .

The complete 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 great to meet the special requirement of the drill rig machine.

序号

No.

钻杆外径

   OD

  节数

 Section

加压键形式

Way of crowding

单节长度

Length of per section(m)

 

参考深度

Drill depth

 

额定扭矩

Torque

1

¢299

3

4

5

磨阻式(friction-type)

9-14

24-65

100 -120

2

¢342

3

4

5

磨阻式(friction-type)

9 - 14

24 - 65

100 -120

3

¢355

3

4

5

磨阻式(friction-type)

9 - 14

24 - 65

100-120

4

¢368

3

4

5

磨阻式(friction-type)

9 - 14

24 - 65

150-180

5

¢377

3

4

5

磨阻式(friction-type)

9 - 14

24 - 65

150-180

6

¢394

3

4

5

磨阻式(friction-type)

9 - 15

24 - 70

180-200

7

¢406

3

4

5

磨阻式(friction-type)

9 - 15

24 - 70

180-200

8

¢419

3

4

5

磨阻式(friction-type)

9 - 15

24 - 70

200-230

9

¢440445

4

5

6

磨阻式(friction-type)

9 - 15

24 – 85

220-260

10

¢470

4

5

6

磨阻式(friction-type)

9 - 18

24 – 102

220-260

11

¢508

4

5

6

磨阻式(friction-type)

9 - 18

24 – 102

260-360

12

¢530

4

5

6

磨阻式(friction-type)

9 - 20

32 – 114

320-400

13

¢580575

4

5

6

磨阻式(friction-type)

9 - 24

32 – 138

360-420

14

¢630

4

5

6

磨阻式(friction-type)

9 - 26

32 - 150

400-500