DTH drill pipes play a significant role in all DTH drilling, regardless type of rock, hole depth or drill rig. The key features of a high quality DTH tube are durability, accuracy and manageability. Drill Pipe : 1.Pipe body : cold draw seamless pipe . so the pipe have the accurate size , good centralizer. 2.Pipe body's material is the same grade as Sandvik. 3.Thread connector :Heat and Nitrogen treatment , so the pipe is more durable and easier to load and unload . 4.Friction welding .
Standard DTH drill pipe: Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm; Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm; Thread: 2 3/8” API REG, 2 7/8” API REG, 3 1/2” API REG, 4 1/2” API REG, 2 3/8 API IF, 3 1/2 API IF
| Code | TDS50 | TDS60 | TDS73 | TDS89 |
| Outer Diameter (mm) | 50 | 60 | 73 | 89 |
| Inner Dameter (mm) | 48 | 58 | 57 | 69 |
| Length | 1.5m/3m/4.5m | 1.5m/3m/4.5m | 1.5m/3m/4.5m/6m | 1.5/3m/4.5m/6m |
| Unit Weight (KG) | 6.5kg/m | 8.6kg/m | 12.8kg/m | 19.4kg/m |