Wireline Drill Rods Geological Drill Pipe High Straightnes High
Tensile Steel Core Drilling
1. Core drill rods are used in coring drilling project, geological
drilling, ore drilling etc,they are primarlly used in deep
drilling.
2. We choose high grade steel material thru heat treatment of the
steel tube & thread joint to improve the steel material streagth
and insurance the thread wear life.
3. Drill rods are available in DCDMA sizes AW, BW, NW and HW with
tapered threaded tool joints in sizes AWY, BWY and NWY.
4. Drill rods are also available in Wireline sizes A, B, N, H, P and
Metric sizes 42mm, 50mm, 60mm, 70mm and 90mm.
| Size | Outer Diameter (mm) | Inner Diameter(mm) |
| AQ | 44.7 | 37.3 |
| BQ | 55.7 | 46.1 |
| NQ | 70.0 | 60.2 |
| HQ | 89.0 | 78.0 |
| PQ(PHD) | 114.5 | 101.5 |
| AW/AWJ/AWY | 43.7 | 30.7 |
| BW/BWJ/BWY | 54.0 | 38.0 |
| NW/NWY | 66.8 | 51.0 |
| HW | 89.0 | 71.0 |
| 42mm | 42.0 | 30.0 |
| 50mm | 50.0 | 37.0 |
| 60mm | 60.0 | 48.0 |
| 70mm | 73.0 | 54.6 |
| 90mm | 89.0 | 69.0 |
| S75 | 71.0 | 61.0 |
1. High precision in size and shape
2. Good low temperature toughness
3. Excellent comprehensive mechanical properties
4. High connection strength and sealability
5. Large inside diameter of tool joint
6. High torque resistance
7. High fatigue strength and long fatigue life
