R32 Drill Rod Specifications: Sizes, Materials & Applications
R32 drill rods are top-hammer rock drilling tools widely used in small-to-medium rock drilling applications. “R32” indicates the thread specification—a rope thread (R-type thread) with a nominal outer diameter of 32 mm.
1. Core Parameters & Specifications
| Parameter Type | Common Specifications / Features |
| Thread Specification | R32 (Male/Female or Double Male thread connections) |
| Rod Body Type | Hexagonal drill rods (H32/H35), Round drill rods (R32/R38) |
| Hole Diameter Range | 41 mm – 76 mm (commonly 45 mm – 64 mm) |
| Common Lengths | 1000 mm, 1830 mm, 2400 mm, 3050 mm, 3660 mm, etc. |
| Material & Processing | High-strength alloy steel (e.g., 23CrNi3Mo) with carburizing or high-frequency quenching |
2. Main Features & Advantages
1. High Transmission Efficiency: The R-type thread offers excellent bending and torsional resistance, efficiently transmitting impact energy and torque from the rock drill.
2. Easy Disassembly: The rope thread design allows quick connection and uncoupling, reducing labor and time spent on adding or removing rods.
3. Wear & Fatigue Resistance: Made of alloy steel with carburized or quenched surface treatment, enhancing wear resistance and fatigue life at the thread joints.
4. Smooth Flushing: Features a standard central flushing hole (water/air) to ensure smooth chip removal and minimize the risk of jammed drills.
R32 Drill Rod Specifications, Sizes & Mining Applications
Watch our video overview on high-strength R32 threaded drill rods. Learn about standard R32 rod sizes, thread types, and key features for top-hammer rock drilling in tunnelling and underground mining.
3. Key Applications
• Underground Mining & Tunnelling: Medium-to-deep hole drilling and production in small and medium mines.
• Tunnel & Civil Engineering: Drilling anchor holes and blast holes in highway and railway tunnel construction.
• Slope Stabilization & Anchoring: Drilling and anchoring works in geological hazard mitigation.
