Integral Drill Rod 60mm 70mm 89mm Threaded Drill Rod For Blast Hole Drilling
Application:
Tapered drill rods are used in granite and marble quarry, gold mine, railway, tunnel, etc. for drilling
Material: High quality carbide and high quality steel
MOQ: No requirement for testing and trial order
We can produce as your request of carbide size, different length of drill rods.
Hollow Hexagonal Drill Steel, is a rock drill steel or integral drill steel without tips. Hollow Drill Steel Bar is a type of steel specially used in drill rod manufacture, high intension and toughness.
Integral drill rod without tip shank sizes 82.5 mm * 22mm(3 1/4" * 7/8"), 108mm * 22mm(4 1/4" * 7/8"), 108mm * 25mm(4 1/4" * 1"), 159 * 25mm(6 1/4" * 1). Lengths: 400mm to 6400mm(1'4" - 21'). Head diameters: 27mm to 40mm.
hollow drill steel
The hollow drill steel is vital material for making drill rods. It is typically supplied as steel hollow bars that made from premium grade steel and through closely-controlled metallurgical process. The result is quality hex hollow drill steel with increased hardenability, uniform grain structure, and excellent machinability, which is difficult to break.
Drill rods made of Roschen hollow steel bars deliver stable drilling performance and extended wear life.
Materials: 55SiMnMo, 40SiMnCrNiMoA, 23CrNi3Mo, 80Cr, 95CrMo, 60Si2MnA
Specifications: B19, B22, B25, B28, B32, B38, B42
| Types of drill rods | Specifications | Length (mm) | Shank | Weight (kg) |
| Tapered drill rods | Taper Angle: 4, 6, 7, 11, 12 degree | 400mm to 8000mm | Hex22mm*108mm Hex25mm*159mm Hex19mm*108mm | 1.7 - 24.9 |
| Integral drill steel | Bit diameter: 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm | 400mm to 4800mm | 3 – 15.4 |
| Plug hole rods | Chisel bit diameter: 17mm, 20mm, 22mm | 150mm to 710mm | 0.6 - 2.9 |
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