Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
DTH pipe O.D 89mm for Water Wells
- Outer Diameter OD: 89mm
- Length: 1000-5000mm
- Wall Thickness: 5-6.35mm
- Thread Pin/Box: 2-3/8" API Reg.
- Materials: 42CrMo for sub adapter + R780 for drill pipe
- Process: : Upsetting treatment to reduce the weight of rod while keep the strength on the weld
Rock drilling tools manufacturer Prodrill, DTH Drill Pipes
The downhole drill pipe products are made of high-quality materials,the heat treatment of the materials is carried out by an integrated multi-functional furnace,all threads are processed by professional numerical control,the internal part of the end of the rod body is thickened,the strength of the weld joint is greatly improved,and the tempering treatment is carried out after friction welding,so that the quality of the drill pipe is stable and reliable,and the service life is greatly prolonged.
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，127mm，140mm.
DTH pipe O.D 89mm*3000mm*6.35mm
Parameter list of Prodrill™DTH drill pipe
| Specifications | Thread | Outer diameter (mm) | Wall Thickness（mm） | Tube upsetting form | Drill rod length (mm) | Wrench socket type |
| 76mm | 2-3/8REG | 76 | 5-6.0 | Internal thickening | 1500-6000 | Single layer |
| 89mm | NC26 | 89 | 5-6.0 | Internal thickening | 1500-6000 | Single/double layer |
| 102mm | NC31 | 102 | 7-8.38 | Internal thickening | 1500-6000 | Single/double layer |
| 102mm | NC31 | 102 | 7-8.38 | Internal and external thickening | 1500-6000 | Single/double layer |
| 114mm | NC35 | 114 | 7-8.38 | Internal thickening | 1500-6000 | Single/double layer |
| 127mm | NC38 | 127 | 8-9.19 | Internal thickening | 1500-6000 | Single/double layer |
| 140mm | 4-1/2Reg | 140 | 9.19 | Internal thickening | 1500-6000 | Single/double layer |
Rock drilling tools manufacturer ProDrill offers high quality DTH drill pipe, products feather as follows:
1. Threaded connection of DTH drill rod has been processed by nitrogen treatment to improve the surface hardness and wear resistance of thread.
2. Use R780 as material of DTH drill rod to improve wear resistance and strength.
3. Adopt the upsetting treatment to reduce the weight of the DTH drill pipe while keep the strength of welding connection(Wall thickness is 6.6mm and welding connection thickness is 8.5mm)
Friction welded technology
Upsetting treatment technology
DTH Drill pipes for DTH hammers and DTH rock drill Bits.
Tool wrench
Water well drill pipes are specifically designed for hydrogeological drilling, undertaking core functions such as power transmission, mud circulation, and wellbore guidance. They are suitable for drilling projects at depths of 300-1500 meters, including freshwater wells, geothermal wells, and monitoring wells, meeting the stringent requirements of efficient hole formation and long-term service in complex formations.
Water well external flat drill pipes are primarily adapted to the needs of down-the-hole hammer impact rotary (including hydraulic and gas) drilling. They feature high rigidity, good sealing, and an external flat structure, offering advantages such as low torque and low resistance during rotation. The pipe body material is selected from materials produced by major steel mills, making it less prone to fatigue bending and ensuring stable and reliable performance. The pipe ends are thickened through medium-frequency heating and high-tonnage hydraulic forging to increase the welding area, ensuring drill pipe stability. Friction welding is followed by weld tempering to guarantee weld strength and improve drill pipe performance.
Our company can produce drill pipes of different materials, diameters, lengths, and wall thicknesses, and can also customize drill pipes according to customer requirements.
