Our concentric casing system with blocks is specifically designed for drilling in soft and unstable formations, making it ideal for applications such as geothermal wells, water wells, small-to-medium-sized grouting holes, and micro-piling projects.
To ensure exceptional durability and wear resistance, we subject our blocks to deep heat treatment processing. Additionally, our precision-engineered installation holes, created using advanced slow wire cutting techniques, guarantee seamless and hassle-free block usage.
(Custom configurations available upon request.)
| Model | Casing OD (MM) | Casing ID (MM) | Reamer (MM) | Blocks Qty | Shoe ID (MM) | Hammer Size | Drill Rod (MM) |
|---|---|---|---|---|---|---|---|
| BOD168 | 168 | 156 | 185 | 2 | 142 | 5 INCH | 76/89 |
| BOD178 | 178 | 158 | 195 | 2 | 148 | 5 INCH | 76/89 |
| BOD183 | 183 | 163 | 200 | 2 | 152 | 5 INCH | 76/89 |
| BOD194 | 194 | 180 | 209 | 2 | 167 | 6 INCH | 89/114 |
| BOD219 | 219 | 205 | 237 | 3 | 192 | 6 INCH | 89/114 |
| BOD245 | 245 | 225 | 264 | 3 | 210 | 8 INCH | 114 |
| BOD273 | 273 | 259 | 308 | 3 | 242 | 8 INCH | 114 |
| BOD325 | 325 | 305 | 358 | 3 | 282 | 10 INCH | 114 |
| BOD406 | 406 | 382 | 426 | 4 | 360 | 12 INCH | 127 |






Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.


Specialist manufacturer of rock drilling tools since 2008. We are committed to the research, development, and production of rock drilling tools, providing high-quality, efficient, and reliable solutions to enhance productivity and reduce costs.




