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Interlock Kelly Bar For Bauer

Bauer Interlock Kelly Bar is composed by interlock Kelly bar and full multi-interlock Kelly bar. For this type of Kelly bar , the first section is 3-keys interlock type, inner few sections are multi-type step keys , the outer keys are three sections three set of concave and convex form ....

Description

 Bauer Interlock Kelly Bar is composed by interlock Kelly bar and full multi-interlock Kelly bar.

 

For this type of Kelly bar , the first section is 3-keys interlock type, inner  few sections are multi-type step keys , the outer keys are three sections three set of concave and convex form .

 

Combined-interlock Kelly bar is based on domestic rig configuration and condition demand, combined with the home and abroad advanced manufacture technology, supporting domestic and foreign rotary piling rig.

 

This type Kelly bar have been applied for patent, the patent No. is 201420542676.9


No.

OD

Section

Way of crowding

Length of per section(m)

Drill depthTorque

1

¢440

3

4

5

(interlock-type)

9-15

24 – 55

220-260

2

¢470(482)

3

4

5

(interlock-type)

9-15

24 – 70

230-280

3

¢580

3

4

5

(interlock-type)

9-15

24 – 70

260-360

4

¢530(540)

3

4

5

(interlock-type)

9-18

24 – 85

360-420

5

¢575(580)

3

4

5

(interlock-type)

9-18

24 – 85

420-460

6

¢630

3

4

5

(interlock-type)

9-20

24 – 92

460-550

The transmission pressure of this drill pipe is the best, especially constructing to the hard layer formation and permafrost; every site of the drill pipe can be formed the pressure point in the course of the drilling, reducing the partial rack (key) of the pressured abrasion, and also to avoid the drill in a part of the pipe wall deformation caused by the pipe-sticking, at the same time, the convex and concave tine distributed in the driving internal key and external key have a good meshing. In the pressurized part of the formation of multi-point pressure, stress and stability are not sticking cloth, excellent work to improve the efficiency of rotary drilling by many customers!


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