Year Established:20132010
Business Type:Manufacturer, Trading Company
Management Certifiation:
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
7.3 – 14.15
15 – 48
355
4
6 – 13
18 – 43
368
8.4 – 15.4
18 – 52
377
11 – 15
40 – 48
394
9.7 – 18.7
21 – 64
406
8.5 – 16.5
29 – 62
419
10.7 – 19.7
24 – 68
440
2 or 4
13 – 15
18 – 65
470
10.7 – 19.25
24 – 64
483
10.5 – 16.5
31 – 67
508
7.5 – 14.5
25 – 53
559
13.75 – 21.75
30 – 72