ALL DTH drill tubes are friction welded, and usually the threads are standard API connections, like 2 3/8" API REG thread, 3 1/2" API REG thread or API IF thread, etc. According to customers request, from 1000mm to 5000mm length of tubes, O.D we can offer 50mm, 60mm, 76mm, 89mm,102mm
Products feathers: 1:Nitriding on the thread of rod joint to improve the hardness of thread surface and increase the wear resistance of thread. 2:Using R780 as the material of rod body to improve the wear resistance and the strength, 42 Cr Mo materials for thread connect. 3:Adopts the upsetting treatment to reduce the weight of rod while keep the strength of the welds(the thickness of dth pipe is 6.5mm while welds area is 8.5mm).
| 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 |