The Concentric Casing System with Blocks offers exceptional precision and adaptability for drilling operations in diverse geological settings. It maintains drilling efficiency even in complex conditions like pebbles and construction waste. Suitable for vertical, horizontal, and inclined drilling, this system provides smooth operation with minimal vibration and low noise, making it ideal for urban environments. Its robust design ensures reliable performance across a wide range of applications.
| Model | D | T | H | C | G | Qty of blocks | Bit shank | Weight(kg) |
|---|---|---|---|---|---|---|---|---|
| Casing tube OD(mm) | Thickness(mm) | Max OD of pilot bit(mm) | Reameed diameter(mm) | Max OD of normal bit(mm) | ||||
| T115 | 140 | 6 | 126 | 150 | 115 | 2 | DHD340,SD4,QL40 | 17.2 |
| T136 | 168 | 10 | 146 | 182 | 136 | 2 | DHD350,SD5,QL50 | 25 |
| T146 | 178 | 10 | 156 | 192 | 146 | 2 | DHD350,SD5,QL50 | 30 |
| T160 | 194 | 10 | 172 | 212 | 160 | 2 | DHD360,SD6,QL60 | 41.2 |
| T185 | 219 | 10 | 196 | 234 | 185 | 3 | DHD360,SD6,QL60 | 58.6 |
| T203 | 245 | 12 | 218 | 260 | 203 | 3 | DHD380,SD8,QL80 | 85.5 |
| T240 | 273 | 10 | 251 | 305 | 240 | 3 | DHD380,SD8,QL80 | 105.6 |
| T280 | 325 | 10 | 302 | 346 | 280 | 3 | NUMA100,SD10,DHD380 | 167.2 |
| T305 | 355 | 10 | 332 | 376 | 305 | 3 | DHD112,NUMA120 | 232.5 |
| T330 | 377 | 10 | 354 | 398 | 330 | 3 | DHD112,NUMA120 | 256 |
| T360 | 406 | 11.5 | 380 | 428 | 360 | 4 | DHD112,NUMA120,NUMA125 | 282 |
| T380 | 426 | 11.5 | 400 | 448 | 380 | 4 | DHD112,NUMA120,NUMA125 | 305.8 |
| T412 | 460 | 11.5 | 434 | 485 | 412 | 4 | NUMA125,TK14 | 383 |
| T432 | 480 | 12.7 | 450 | 505 | 432 | 4 | NUMA125,TK14 | 426.6 |
| T457 | 508 | 12.7 | 479 | 534 | 457 | 4 | NUMA180,TK18,TK14 | 590 |
| T510 | 560 | 12.7 | 530 | 590 | 510 | 4 | NUMA180,TK18 | 735 |
| T551 | 610 | 12.7 | 582 | 639 | 551 | 4 | NUMA180,TK18 | 922 |
| T600 | 660 | 14 | 628 | 684 | 600 | 4 | TK24,NUMA180 | 1192 |
| T645 | 711 | 16 | 675 | 741 | 645 | 4 | TK24 | 1340 |
| T694 | 762 | 16 | 726 | 800 | 694 | 4 | TK24 | 1603 |
| T750 | 813 | 16 | 776 | 845 | 750 | 5 | TK24 | 1790 |
| T794 | 862 | 16 | 824 | 900 | 794 | 5 | TK24,TK28 | 2009 |
| T846 | 914 | 16 | 876 | 960 | 846 | 5 | TK28,QL300 | 2345 |
| T892 | 960 | 16 | 922 | 1000 | 892 | 5 | TK28,QL300 | 2536 |
| T950 | 1016 | 16 | 980 | 1060 | 950 | 6 | TK28,QL300 | 2965 |
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