The Concentric Casing System with Wings is engineered for high-precision drilling across different geological structures. It maintains efficiency even in complex conditions such as pebbles and construction waste. This system supports vertical, horizontal, and inclined drilling, making it highly versatile. With its smooth operation and low noise levels, it is perfectly suited for urban environments, ensuring minimal environmental disturbance while delivering reliable performance.
| Model | D | T | H | C | G | Qty of wings | Bit shank | Weight(kg) |
|---|---|---|---|---|---|---|---|---|
| Casing tube OD(mm) | Thickness(mm) | Max OD of guide device(mm) | Reamed diameter(mm) | Max OD of normal bit(mm) | ||||
| T90 | 114 | 6.5 | 99 | 125 | 90 | 2 | DHD3.5 | 10.3 |
| T115 | 146 | 10 | 124 | 157 | 115 | 2 | DHD340,SD4,QL-40 | 20.6 |
| T136 | 168 | 10 | 146 | 180 | 136 | 2 | DHD350,SD5,QL50 | 35.5 |
| T142 | 178 | 10 | 154 | 195 | 142 | 2 | DHD350,SD5,QL50 | 36 |
| T160 | 194 | 10 | 172 | 206 | 160 | 2 | DHD360,SD6,QL60 | 52.8 |
| T190 | 219 | 7 | 203 | 236 | 190 | 2 | DHD360,SD6,QL60 | 69 |
| T240 | 273 | 10 | 251 | 290 | 240 | 3 | DHD380,SD8,QL80 | 125 |
| T280 | 325 | 10 | 302 | 342 | 280 | 3 | NUMA100,DHD380 | 180,158 |
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