Coal Mine Drill Pipe

Applied to geological exploration, water well drilling, geothermal well drilling engineering

A geological drill pipe/fine buckle drill pipe is a drilling tool that is connected to a locking joint, transmits drilling torque to the bottom drill bit, and is responsible for transmitting drilling fluid. The material used for the rod body is Shanghai Baosteel STM-R780 (42MnMo7), which is not easy to fatigue bend or break, and has stable and reliable performance. The rod end is subjected to medium frequency heating, hydraulic upsetting and thickening, and 12 hours of buried tempering to ensure the density of the drill pipe and improve its mechanical properties. All adopt precision imported CNC lathes and customized forming cutters for thread processing, ensuring precision and tightness in connection with lock joints.

We can produce drill rods of different materials, lengths, diameters, and wall thicknesses, as well as customize drill rods according to customer requirements for materials, lengths, wall thicknesses, and threads.

Size	Outer Diameter (mm)	Inner Diameter(mm)
AQ	44.7	37.3
BQ	55.7	46.1
NQ	70.0	60.2
HQ	89.0	78.0
PQ(PHD)	114.5	101.5
AW/AWJ/AWY	43.7	30.7
BW/BWJ/BWY	54.0	38.0
NW/NWY	66.8	51.0
HW	89.0	71.0
42mm	42.0	30.0
50mm	50.0	37.0
60mm	60.0	48.0
70mm	73.0	54.6
90mm	89.0	69.0
S75	71.0	61.0

Drill pipe usage notes:
1.New drill pipe should be pasted oil before connection
2.Make up and break at least 3 times before drilling
3.Hard bending and plastic coating can be processed according to clients’ special requirements

You have a specific question or would you simply like to learn more about us?

Find our contact information below or use our Contact Form.