The Concentric Casing System with Rings provides unparalleled precision and adaptability for drilling operations, ensuring straight holes through various geological structures. Designed to maintain efficiency even in challenging environments such as pebbles and construction waste, this system supports vertical, horizontal, and inclined drilling. Its smooth operation results in minimal vibration and low noise, making it ideal for urban settings. With a wide range of casing tube outer diameters and compatible bits, it caters to diverse drilling needs, providing robust performance and reliability.
| Model | D | T | H | C | G | Bit shank | Weight(kg) |
|---|---|---|---|---|---|---|---|
| Casing tube OD(mm) | Thickness(mm) | Max OD of pilot bit(mm) | Reamed diameter(mm) | Max OD of normal bit(mm) | |||
| P76 | 76 | 8 | 57 | 88 | 39 | R32 | 3.2 |
| P89 | 89 | 8 | 70 | 102 | 58 | T38 | 4.8 |
| P114 | 114 | 9 | 94 | 128 | 74 | T38,R38 | 9.5 |
| P127 | 127 | 10 | 105 | 142 | 93 | T45 | 11 |
| P140 | 140 | 10 | 116.5 | 161 | 99 | T45,T51 | 11.5 |
| P114 | 114 | 10 | 92 | 128 | 74 | DHD3.5 | 10 |
| P127 | 127 | 10 | 105 | 142 | 93 | DHD3.5 | 13.4 |
| P140 | 140 | 10 | 116.5 | 161 | 99 | DHD340,SD4,QL40 | 17 |
| P146 | 146 | 10 | 123 | 165 | 110 | DHD340,SD4,QL40 | 21 |
| P168 | 168 | 10 | 141 | 188 | 127 | DHD350,SD5,QL50 | 28.7 |
| P178 | 178 | 10 | 155 | 198 | 136 | DHD350,SD5,QL50 | 33.6 |
| P194 | 194 | 12.7 | 166 | 214 | 145 | DHD360,SD6,QL60 | 44 |
| P219 | 219 | 12.7 | 191 | 243 | 170 | DHD360,SD6,QL60 | 59.3 |
| P245 | 245 | 12.7 | 214 | 268 | 195 | DHD380,SD8,QL80 | 80.7 |
| P254 | 254 | 12.7 | 224 | 276 | 203 | DHD380,SD8,QL80 | 85.7 |
| P273 | 273 | 12.7 | 241 | 305 | 221 | DHD380,SD8,QL80 | 102.7 |
| P325 | 325 | 12.7 | 292 | 350 | 276 | DHD380,NUMA100,SD10 | 142.3 |
| P355 | 355 | 12.7 | 326 | 380 | 306 | NUMA100,SD10 | 189 |
| P406 | 406 | 12.7 | 377 | 442 | 350 | DHD112,QL120,SD12,NUMA120 | 292.4 |
| P480 | 480 | 12.7 | 452 | 510 | 426 | TK14,NUMA125 | 390 |
| P508 | 508 | 12.7 | 476 | 541 | 449 | TK18,NUMA180 | 503.6 |
| P560 | 560 | 12.7 | 530 | 590 | 480 | TK18,NUMA180 | 620 |
| P610 | 610 | 12.7 | 558 | 642 | 513 | TK18,NUMA180 | 717 |
| P711 | 711 | 14.5 | 676 | 742 | 636 | TK24 | 1124 |
| P813 | 813 | 18 | 740 | 840 | 700 | TK24 | 1504 |
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