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Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
DTH Drill Pipe O.D.76mm (No Flat) for mining
- Outer Diameter : 76mm :
- Length: 3000-5000mm :
- Wall Thickness: 5-6.5mm :
- Thread Connect length: G350*M280
- Thread Connect Material:350Crmo
- Thread Pin/Box:API 2-3/8" Reg. :
- Materials: 35CrMo for thread connect + DZ50 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
DTH drill tubes are used for connecting DTH hammer and DTH button bits rock drill bits, they are made from seamless tubes. Tubes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability, accuracy and manageability.
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,114mm，127mm，140mm.
Parameter list of Prodrill™DTH drill pipe
| Thread | Diameter （mm） | Length（mm） | Wall Thickness（mm） | Upsetting form |
| API23/8REG | 76 | 1000-6000 | 4-10 | Internal thickening |
| API23/8REG | 83 | 1000-6000 | 4-10 | Internal thickening |
| API23/8REG | 89 | 1000-6000 | 4-10 | Internal thickening |
| API27/8REG | 102 | 1500-6000 | 6-12 | Internal thickening |
| API31/2REG | 114 | 1500-6000 | 6-12 | Internal thickening |
| API31/2REG | 127 | 1500-6000 | 6-12 | Internal thickening |
| API31/2REG | 133 | 1500-6000 | 6-12 | Internal thickening |
| API41/2REG | 140 | 1500-6000 | 6-12 | Internal thickening |
| CUBX21# | 89 | 1000-6000 | 4-10 | Internal thickening |
| CUBX21# | 102 | 1000-6000 | 6-12 | Internal thickening |
| CUBX24# | 102 | 1000-6000 | 6-12 | Internal thickening |
| CUBX28# | 114 | 1000-6000 | 6-12 | Internal thickening |
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.
Friction welded technology
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 DZ50 as the material of rod body to improve the wear resistance and the strength, 35CrMo materials for thread connect.
3:Adopts the upsetting treatment to reduce the weight of rod while keep the strength of the welds.
Upsetting treatment technology
DTH drill pipe packaged in ware house for delivery.
