42mm geological drill rod,drillling pipe,DHT drilling pipe
Geological drilling rod is used as a drilling tool for coal exploration, gas exploration and geological exploration. The geological exploration rod produced by our company is also known as the drill pipe, the round drill pipe, the outer horizontal drill pipe, the geological alloy drill pipe and the conventional drill pipe for the coal mine tunnel. It includes the drilling rod for diameter less than 89mm and the drill pipe for drilling. The drill stem body is selected for special quality alloy steel pipe, and the drill pipe joint is made of high quality alloy structural steel. After vacuum conditioning, the fatigue strength and shear strength are greatly improved. The advanced friction welding technology is used to produce and process. The drill rod has high bending strength and strong welding point. The production equipment completely uses advanced CNC machining equipment, which has the characteristics of high production efficiency, high quality and stability. It can guarantee the requirement of straightness for deep hole drilling, and the product has high strength and long service life.
| NO. |
(mm)Diameter |
(mm)Thickness |
Steel products |
Torque |
(m) Depth |
Joint hardness |
Standards |
| 1 |
Φ33.5 |
5 |
DZ50 |
2000N/M |
100 |
HRC28-32 |
MT/T-521-2006 |
| 2 |
Φ42 |
6.2 |
DZ50 |
3000N/M |
100 |
HRC28-32 |
MT/T-521-2006 |
| 3 |
Φ50 |
6.5 |
DZ50 |
5000N/M |
100 |
HRC28-32 |
MT/T-521-2006 |
| 4 |
Φ63.5 |
7.1 |
R780 |
8000N/M |
200 |
HRC28-32 |
MT/T-521-2006 |
| 5 |
Φ73 |
7.8 |
R780 |
10000N/M |
200 |
HRC28-32 |
MT/T-521-2006 |
| 6 |
Φ89 |
9.5 |
R780 |
12000N/M |
300 |
HRC28-32 |
MT/T-521-2006 |
| 7 |
Φ102 |
9.5 |
R780 |
12000N/M |
300 |
HRC28-32 |
GB-T13344-2010 |
| 8 |
Φ114 |
9.5 |
R780 |
15000N/M |
300 |
HRC28-32 |
GB-T13344-2010 |
| 9 |
Φ127 |
9.5 |
R780 |
20000N/M |
300 |
HRC28-32 |
GB-T13344-2010 |
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