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interlocking kelly bar

Structural features: Stair key, organization transmission, the outside key is made by highly wear-resisting tempering steel 

 

Structural features: Stair key, organization transmission, the outside key is made by highly wear-resisting tempering steel

Main application: Soft formations, (weak) weathered rock, hard strata construction

Please contact:zhangmimin122@126.com

Description

Structural features: Stair key, organization transmission, the outside key is made by highly wear-resisting tempering steel 

 

Structural features: Stair key, organization transmission, the outside key is made by highly wear-resisting tempering steel

Main application: Soft formations, (weak) weathered rock, hard strata construction

 

Outer Dia.(mm)

 Elements / Sections

 Retracted length(m)

 Max. depth(m)

305

3 or 4

5.75 – 10.5

12 – 36

343

3 or 4

7.3 – 14.15

15 – 48

355

4

6 – 13

18 – 43

368

3 or 4

8.4 – 15.4

18 – 52

377

4

11 – 15

40 – 48

394

3 or 4

9.7 – 18.7

21 – 64

406

4

8.5 – 16.5

29 – 62

419

3 or 4

10.7 – 19.7

24 – 68

440

2 or 4

13 – 15

18 – 65

470

3 or 4

10.7 – 19.25

24 – 64

483

4

10.5 – 16.5

31 – 67

508

4

7.5 – 14.5

25 – 53

559

3 or 4

13.75 – 21.75

30 – 72

Year Established:2010

Business Type:Manufacturer, Trading Company

Management Certifiation:

Operational Address: Yangxi Group, Xiangyang Farm, Shuangma Town, Yuetang District, Xiangtan, Hunan, China (Mainland)