Hunan Powerdrills Rock Machinery Co., Ltd. Hunan Powerdrills Rock Machinery Co., Ltd.
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Rock Drilling Tools

Top Hammer Drill Rods
  • Top Hammer Drill Rods
  • Top Hammer Drill Rods
  • Top Hammer Drill Rods
  • Top Hammer Drill Rods

Top Hammer Drill Rods

  • Diameter range: 28-60mm
  • Thread types: R thread, T thread, S thread
  • Material: Medium-carbon alloy steel
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Typical Applications

Underground mining drill rods:
Designed for use with rail-mounted pneumatic rock drills and fully hydraulic underground drilling rigs, these drill rods are widely applied in underground mining production drilling, medium-deep blast holes, rock bolting and support holes.

Quarry operations
Quarry operations
Micro-pile construction
Micro-pile construction

Tunneling and drifting drill rods:
Matched with fully hydraulic tunneling jumbos, these drill rods are used for drifting and blasting in large underground metal mines, railway and highway tunnels, hydropower diversion tunnels and underground powerhouse excavation.

Underground excavation
Underground excavation
Tunnel engineering
Tunnel engineering
Technical Specifications
Drill Rods for Underground Mining
Drifter rod Length of drifter rod Hex size Weight, kg
mm ft-in mm inch
R32-Hex28-R28
R32-Hex28-R28
2600 8'6 3/8" 28 1 1/8" 13
3090 10'1 5/8" 28 1 1/8" 15.9
3700 12'1 5/8" 28 1 1/8" 18.5
4005 13'1 43/64" 28 1 1/8" 20.5
4265 13'11 1/2" 28 1 1/8" 21.3
4305 14'1 31/64" 28 1 1/8" 21.5
R38-Hex28-R28
R38-Hex28-R28
3700 12'1 1/2" 28 1 1/8" 18.5
4305 14'1 31/64" 28 1 1/8" 21.5
R32-Hex32-R28
R32-Hex32-R28
3090 10'1 5/8" 32 1 1/4" 19.6
R38-Hex32-R28
R38-Hex32-R28
3090 10'1 21/32" 32 1 1/4" 19.7
3700 12'1 1/2" 32 1 1/4" 23.6
4305 14'1 31/64" 32 1 1/4" 27.3
R38-Hex35-R32
R38-Hex35-R32
3090 10'1 5/8" 35 1 5/8" 24
3700 12'1 1/2" 35 1 5/8" 28.7
4305 14'1 31/64" 35 1 5/8" 33.7
4915 16'1 1/2" 35 1 5/8" 38.2
5525 18'1 33/64" 35 1 5/8" 43.1
T38-Hex35-R32 MF rod
T38-Hex35-R32 MF rod
3700 12'1 1/2" 35 1 5/8" 29.4
4305 14'1 31/64" 35 1 5/8" 34.4
4915 16'1 1/2" 35 1 5/8" 38.9
5525 18'1 33/64" 35 1 5/8" 43.8
T38-Hex35-R32
T38-Hex35-R32
3090 10'1 5/8" 35 1 5/8" 23.9
3700 12'1 1/2" 35 1 5/8" 28.6
4305 14'1 31/64" 35 1 5/8" 33.6
4915 16'1 1/2" 35 1 5/8" 38.3
5525 18'1 33/64" 35 1 5/8" 43.2
6135 20'1 1/2" 35 1 5/8" 47.9
R38-Hex32-R32
R38-Hex32-R32
3700 12'1 1/2" 32 1 5/8" 23.6
4305 14'1 31/64" 32 1 5/8" 27.5
4915 16'1 1/2" 35 1 5/8" 31.4
T38-Hex32-R32
T38-Hex32-R32
3700 12'1 1/2" 32 1 5/8" 23.6
4305 14'1 31/64" 32 1 5/8" 27.5
T38-Hex35-R35
T38-Hex35-R35
4305 14'1 31/64" 35 1 3/8" 33.8
4915 16'1 1/2" 35 1 3/8" 38.4
5525 18'1 33/64" 35 1 3/8" 43.3
6135 20'1 1/2" 35 1 3/8" 48
T38-Hex35-R35 MF rod
T38-Hex35-R35 MF rod
4305 14'1 31/64" 35 1 3/8" 34
4915 16'1 1/2" 35 1 3/8" 38.6
5525 18'1 33/64" 35 1 3/8" 43.5
6135 20'1 1/2" 35 1 3/8" 48.2
T38-Round35-R35
T38-Round35-R35
4305 14'1 31/64" 35 1 3/8" 34.2
4915 16'1 1/2" 35 1 3/8" 39.2
5525 18'1 33/64" 35 1 3/8" 44.3
6135 20'1 1/2" 35 1 3/8" 49.3
Drill Rods for Tunneling and Drifting
Drifter rod Length of drifter rod Hex size Weight, kg
mm ft-in mm inch
R32-Round32-R32
R32-Round32-R32
2435 8" 32 1 1/4" 13.2
3050 10" 32 1 1/4" 16.6
3660 12" 32 1 1/4" 20
4000 13'1 1/2" 32 1 1/4" 21.9
R32-Round32-R32 MF rod
R32-Round32-R32 MF rod
2435 8" 32 1 1/4" 14.6
3050 10" 32 1 1/4" 18.6
3660 12" 32 1 1/4" 21.1
4265 14" 32 1 1/4" 25.6
R32-Round46-R32 Guide tube
R32-Round46-R32 Guide tube
3050 10" 46 1 3/4" 25
R38-Round39-R38
R38-Round39-R38
2435 8" 39 1 1/2" 19.2
3050 10" 39 1 1/2" 24.3
T38-Hex32-T38
T38-Hex32-T38
3050 10" 32 1 1/4" 18.7
3660 12" 32 1 1/4" 22.4
T38-Round39-T38
T38-Round39-T38
3050 10" 39 1 1/2" 24.8
3660 12" 39 1 1/2" 29.8
T38-Round39-T38 MF rod
T38-Round39-T38 MF rod
3050 10" 39 1 1/2" 26.3
3660 12" 39 1 1/2" 31.5
4265 14" 39 1 1/2" 36.9
T38-Round56-T38 Guide tube
T38-Round56-T38 Guide tube
3050 10" 56 2 1/8" 28.3
3660 12" 56 2 1/8" 32.8
T45-Hex38-T45
T45-Hex38-T45
3050 10" 38 1 1/2" 25.2
3660 12" 38 1 1/2" 30.4
T45-Round46-T45
T45-Round46-T45
3050 10" 46 1 3/4" 34
3660 12" 46 1 3/4" 41
4265 14" 46 1 3/4" 47.9
6095 20" 46 1 3/4" 68.9
T45-Round46-T45 MF rod
T45-Round46-T45 MF rod
3050 10" 46 1 3/4" 37.6
3660 12" 46 1 3/4" 43.5
4265 14" 46 1 3/4" 51.5
5335 17'6 1/8" 46 1 3/4" 61.8
6095 20" 46 1 3/4" 70.6
T45-Round64(76)-T45 Guide tube
T45-Round64(76)-T45 Guide tube
3660 12" 64 2 1/2" 49
3660 12" 76 3" 77.8
T51-Round52-T51
T51-Round52-T51
3660 12" 52 2" 50.8
4265 14" 52 2" 59.5
6095 20" 52 2" 85.6
T51-Round52-T51 MF rod
T51-Round52-T51 MF rod
3660 12" 52 2" 53.9
4265 14" 52 2" 62.6
5335 17'6 1/8" 52 2" 77.7
6095 20" 52 2" 88.8
T51-Round76(87)-T51 Guide tube
T51-Round76(87)-T51 Guide tube
3660 12" 76 3" 79.1
3660 12" 87 3 1/2" 80
T60-D60-T60
T60-D60-T60
3660 12" 60 2 3/8" 73
4265 14" 60 2 3/8" 82
6095 20" 60 2 3/8" 110
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Mining Equipment
Drill Rigs Comprehensive mining equipment covering surface drill rigs and underground drill rigs for mining, tunneling and construction. Designed for high efficiency, safety and adaptability across diverse geological conditions and mining environments.
Air Compressors
Air Compressors Air compressors designed for drilling, mining, and construction applications. Including portable diesel compressors, portable electric compressors, and stationary electric screw compressors, providing stable, efficient, and reliable air supply for various working conditions.
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Geological exploration
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Mining Open-pit blast holes, production drilling, underground mining
Foundation construction
Foundation construction Bridges, high-rise buildings, port and harbor piling foundations
How should the appropriate drill rod be selected?

Drill rod selection should be based primarily on hole diameter and hole depth, followed by matching the rod size to the output capacity of the rock drill. For demanding drilling conditions, drill rods manufactured from high-strength alloy steel are recommended, as they provide improved service life, higher fatigue resistance, and better drilling stability.

How should drill rods be maintained?

Before operation, apply thread grease to all threaded connections to reduce wear and prevent thread seizure. After use, remove rock dust, debris, and oil residues from the rod surface to minimize corrosion and performance degradation. Use dedicated cleaning tools to remove residual cuttings inside the rod and ensure that the flushing channel remains unobstructed. After operation, apply anti-rust oil and store the drill rods in a dry, well-ventilated environment. Thread lubrication should be maintained to prevent long-term corrosion.

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Applications
  • Mining
  • Drilling
  • Geological exploration
  • Foundation construction
  • Water conservancy and hydropower projects
  • Transportation infrastructure construction
  • Slope stabilization and excavation support
  • Tunneling and underground engineering
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+86-18773189972
+86-18773189972