HEBEI MINETECH MACHINERY TECHNOLOGY CO., LTD
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Geological Drilling HQ Diamond Drill Bit Core Drilling Tools
Product information:
Core diamond drilling tool for drilling rock in underground soil formations which includes an outside pipe and an inside pipe therein that can be conveyed separately to the surface.
The inside pipe includes a core-receiving receptacle at its lower end, and at its upper end is provided with a measurement unit for on-site acquisition, processing and storage of data, such as borehole, core and/or drilling process parameters.
Specifications:
| Size | Outside diameter(mm) | Inside diameter(mm) |
| AQ | 47.75/47.50 | 27.10/26.85 |
| BQ | 59.69/59.44 | 36.52/36.27 |
| BQ3 | 59.69/59.44 | 33.65/33.40 |
| NQ | 75.44/75.19 | 47.75/47.50 |
| NQ2 | 75.44/75.19 | 50.80/50.55 |
| NQ3, NQTT | 75.44/75.19 | 45.21/44.96 |
| HQ | 95.76/95.38 | 63.63/63.38 |
| HQ3, HQTT | 95.76/95.38 | 61.24/60.99 |
| PQ | 122.30/121.80 | 85.09/84.84 |
| PQ3 | 122.30/121.80 | 83.18/82.93 |
