Best quality Concentric Casing System - Concentric casing system with blocks – Spark
Best quality Concentric Casing System - Concentric casing system with blocks – Spark Detail:
Application
Piling, anchoring, foundation
Component parts
Operation procedure
Step1: When drilling starts, the system drives the casing shoe and casing tube move down.
Step2: When reaching the bedrock, lift up the block system, the blocks will closed, reverse rotation and pull out the block system from the hole.
Step3: If the hole have reach the desired depth, finish the drilling and continue other process.
Step4: If you still want to drill deeper, use the conventional DTH bit to drill to the desired depth.
Advantages
Reliable performance, easy to retrieval
Ralated part list
Specification of concentric casing system with blocks
|
D |
|
h |
H |
C |
G |
|
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|
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|
Model |
O.D. of Casing Tube (mm) |
I. D. of Casing Tube (mm) |
Wall thickness of casing (mm) |
Guide device max. Dia. (mm) |
Reamed Dia. (mm) |
Max. dia. of normal bit (mm) |
Qty. of blocks |
Hammer Type |
Weight（KG） |
|
T185 |
219 |
199 |
10 |
197 |
234 |
185 |
3 |
COP64/DHD360/SD6/QL60/M60 |
61 |
|
T210 |
245 |
225 |
10 |
222 |
260 |
210 |
3 |
COP84/DHD380/SD8/QL80/M80 |
88 |
|
T240 |
273 |
253 |
10 |
251 |
305 |
240 |
3 |
COP84/DHD380/SD8/QL80/M80 |
96.5 |
|
T280 |
325 |
305 |
10 |
302 |
350 |
240 |
3 |
COP84/DHD380/SD8/QL80/M80 |
115 |
|
T305 |
355 |
325 |
10 |
322 |
380 |
305 |
3 |
DHD112/NUMA120/SD12 |
214 |
|
T365 |
406 |
382 |
12 |
380 |
432 |
365 |
4 |
DHD112/NUMA120/SD12 |
254 |
|
T432 |
480 |
454.6 |
12.7 |
450 |
505 |
432 |
4 |
TK14 |
415 |
|
T460 |
508 |
482.6 |
12.7 |
479 |
534 |
461 |
4 |
NUMA180 |
630 |
|
T510 |
560 |
534.6 |
12.7 |
530 |
590 |
510 |
4 |
NUMA180 |
730 |
|
T553 |
610 |
584.6 |
12.7 |
582 |
639 |
553 |
4 |
NUMA180 |
895 |
|
T596 |
660 |
628 |
16 |
625 |
690 |
596 |
4 |
NUMA180 |
946 |
|
T645 |
711 |
679 |
16 |
675 |
741 |
645 |
4 |
NUMA180 |
1010 |
|
T694 |
762 |
730 |
16 |
726 |
792 |
694 |
4 |
NUMA240 |
1595 |
|
T744 |
813 |
781 |
16 |
776 |
845 |
744 |
6 |
NUMA240 |
2436 |
|
T846 |
914 |
882 |
16 |
878 |
946 |
846 |
6 |
NUMA240 |
2756 |
|
T948 |
1016 |
984 |
16 |
980 |
1050 |
948 |
6 |
NUMA240 |
3076 |
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