Home Categories Send inquiry

Rock Drill Pipe

Drill pipes that are used in applications such as DTH/ DTHR/ DR basically comprise of a steel pipe with a pin at one end and a box on the other. The job of the drill pipe is to transmit rotational torque and thrust from the drill rig rotary head to down hole drilling tools.
According to different application, different diameters of drill tubes are needed, basically, smaller DTH hammers need smaller DTH drill tubes, vice versa. Usually we are offering 50mm, 60mm, 76mm, 89mm, 95mm, 102mm, 114mm, 127mm, 140mm, 159mm.
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 6000mm length of pipe are available.
   
  Size Nominal mass Lb/ft Calculated weight type Wall thickness
in. mm lb/ft kg/m in. mm
2 3/8 60.3 6.65 6.26 9.32 0.28 7.11
2 7/8 73 10.4 9.72 14.48 0.362 9.19
3 1/2 88.9 9.5 8.81 13.12 0.254 6.45
3 1/2 88.9 13.3 12.31 18.34 0.368 9.35
3 1/2 88.9 15.5 14.63 21.79 0.449 11.4
3 1/2 88.9 15.5 14.63 21.79 0.449 11.4
4 101.6 14 12.93 19.26 0.33 8.38
4 1/2 114.3 13.75 12.24 18.23 0.271 6.88
4 1/2 114.3 16.6 14.98 22.31 0.337 8.56
4 1/2 114.3 20 18.69 27.84 0.43 10.92
5 127 16.25 14.87 22.15 0.296 7.52
5 127 19.5 17.93 26.71 0.362 9.19
5 127 19.5 17.93 26.71 0.362 9.19
5 127 25.6 24.03 35.79 0.5 12.7
5 127 25.6 24.03 35.79 0.5 12.7
       5 1/2        139.7                      21.90         19.81        29.51         0.361          9.17
       5 1/2        139.7                            24.70         22.54        33.57         0.415        10.54