Rock Drilling Tools
MF & MM Extension Rods
Male-Female (MF) and Male-Male (MM) extension rods for top-hammer drilling systems. Provides reliable energy transmission and easy string assembly.
Key Features
- ✓ Precision-machined thread connections
- ✓ High fatigue resistance under repeated impact
- ✓ Hex 35 / Hex 38 shank options
- ✓ Compatible with top-hammer drill rigs
- ✓ Standard lengths for modular drill string assembly
Technical Specifications
| Types | MF (Male-Female) / MM (Male-Male) |
| Shank Size | Hex 32 / Hex 35 / Hex 38 mm |
| Standard Length | 0.8 m / 1.0 m / 1.5 m / 2.0 m |
| Thread Profile | R25 / R28 / R32 / T38 / T45 / T51 |
| Steel Grade | Special alloy drill steel |
| Application | Top-hammer rig, quarry, tunnel, mining |
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