Designed for efficient down-the-hole drilling, our DTH Drill Pipe ensures superior performance in demanding conditions. It features high-strength steel construction, excellent impact resistance, and seamless connectivity for smooth operations. Ideal for mining, construction, and water well projects, it delivers reliability, durability, and maximum productivity on every job.
| O.D | Thread Type | Steel Grade | Wall Thickness | Upsetting Type | Pipe Length | |
| inch | mm | mm | mm | |||
| 3 | 76 | 2-3/8"REG | R780, G105, S135 | 4-8 | IU | 1000--6000 |
| 3 1/2 | 89 | 23/8"IF NC26 | R780, G105, S135 | 4-10 | IU | 1000--6000 |
| 4 | 102 | 27/8"IF NC31 | R780, G105, S135 | 8-10 | IU | 1000--9000 |
| 4 1/4 | 108 | 27/8"IF NC31 | R780, G105, S135 | 8-10 | IU | 1000--9000 |
| 4 1/2 | 114 | NC35 | R780, G105, S135 | 6-12 | IU | 1500--9000 |
| 5 | 127 | 31/2"IF NC38 | R780, G105, S135 | 9-12 | IU | 1500--9000 |
| 5 1/2 | 140 | 4"IF NC46 | R780, G105, S135 | 8-20 | IU | 1500--9000 |
High strength alloy steel material
Excellent torsional and wear-resistant performance
Precision thread connection design
Strong stability of drilling depth
Suitable for complex geological conditions
Long service life, easy maintenance
Materials are purchased from well-known large enterprise of domestic.
The ends of pipe are lU processed, then temered after friction welding.
The joints og drill pipe more wear-resistant and easy to disassemble without thread gluingbreaking and joint expansion and cracking.
Precision imported CNC lathes and customized forming cutters are used for thread processing.
All threads are equipped with thread gauges that meet interna-tional standards.
All process can extend service life of drill pipe andmake the quality stable and reliable.
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