DTH drill pipes
Roschen DTH drill pipes
DTH drill pipes 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.
Roschen DTH drill pipes are made of superior alloy and the both thread ends are friction welded to the seamless steel pipe. The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer.
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
Special DTH drill pipe:
The drill pipe for Atlas Copco – Ingersol Rand T4, Schramm T64, Atlas Copco F6, L6 and L8, and the drill pipe for Sandvik Driltech D25/D40K.
| API Standard Thread Type Drilling Pipe Specifications | ||||
| DTH rod | dia(mm) | length(mm) | Thread | products No. |
| DTH pipe/ Roller rods | Φ42 | 1025 | Z32*8 | DP42*1025-Z32*8 |
| Φ51 | 1025 | Z42*10 | DP51*1025-Z42*10 | |
| 1050 | Z42*10 | DP51*1050-Z42*10 | ||
| Φ51(friction welding) | 1250 | K49/52*3 | DP51*1250-K49/52*3 | |
| Φ60 | 1025 | K52*3 | DP60*1025-K52*3 | |
| 1025 | Z48*10 | DP60*1025-Z48*10 | ||
| 1250 | K52*3 | DP60*1250-K52*3 | ||
| 2000 | DP60*2000-K52*3 | |||
| Φ60(friction welding) | 1250 | Z42*10 | DP60*1250-Z42*10 | |
| Φ60 | 1500 | Z48*10 | DP60*1500-Z48*10 | |
| Φ76(wall thickness=6mm) | 1000 | API 2 3/8"REG | DP76*1000-API2 3/8REG(6) | |
| 15000 | DP76*1500-API2 3/8REG(6) | |||
| 2000 | DP76*2000-API2 3/8REG(6) | |||
| 3000 | DP76*3000-API2 3/8REG(6) | |||
| Φ76(wall thickness=8mm) | 2000 | DP76*2000-API2 3/8REG(8) | ||
| Φ76(wall thickness=6mm) | 3070 | Z65*10 | DP76*3070-Z65*10 | |
| 3100 | API 2 3/8"REG | DP76*3100-API2 3/8REG(6) | ||
| Φ76(wall thickness=8mm) | 3070 | Z65*10 | DP76*3070-Z65*10(8) | |
| 3100 | API 2 3/8"REG | DP76*3100-API 2 3/8"REG(8) | ||
| Φ89(wall thickness=8mm) | 1500 | API 2 3/8"REG | DP89*1500-API 2 3/8"REG(8) | |
| 3000 | DP89*3000-API 2 3/8"REG(8) | |||
| 4000 | DP89*4000-API 2 3/8"REG(8) | |||
| Φ102 | 3000 | API 2 7/8"REG | DP102*3000-API 2 7/8"REG | |
| 4000 | DP102*4000-API 2 7/8"REG | |||
| 5000 | DP102*5000-API 2 7/8"REG | |||
| Φ108 | 9000 | Z75*10 | DP108*9000-Z75*10 | |
| Φ114(wall thickness=12mm) | 6300 | Z75*10/Z85*20 | DP114*6300-Z75*10/ Z85*20 | |
| 7520 | DP114*7520-Z75*10/ Z85*20 | |||
| 6580 | DP114*6580-Z75*10/ Z85*20 | |||
| Φ133(wall thickness=12mm) | 8500 | API 2 7/8"REG | DP133*8500-API 2 7/8"REG | |
| 9000 | DP133*9000-API 2 7/8"REG | |||
| Φ176(wall thickness=20mm) | 9250 | API 4 1/2"REG | DP176*9250-API 4 1/2"REG | |
| Φ219(wall thickness=25-30mm) | 8870 | API 6 5/8"REG | DP219*8870-API 6 5/8"REG | |
| 15000 | DP219*15000-API 6 5/8"REG | |||
| Φ273(wall thickness=25-30mm) | 8870 | DP273*8870-API 6 5/8"REG | ||
| 15000 | DP273*15000-API 6 5/8"REG | |||
| Rod stabilizer | Φ219 | 1390 | DP219*1390-API 6 5/8"REG | |
| Φ250 | 1390 | DP250*1390-API 6 5/8"REG | ||
