
Long Reach Threaded Drill Rod for Large Section Tunnel Rock Drilling Jobs. Customizable Thread Types: Available in R22, R25, R28, R32, R38, T38, T45, T51, St58, T60 to match various rigs. Multiple Color Options: Offered in Red, Black, Yellow, and White for easy identification and safety. High-Strength Material: Constructed from 23crni3mo D6a carbon steel for durability in hard rock. Secure Thread Locking: Precisely machined male and female threads ensure firm locking under heavy loads. Dual Product Lines: Includes extension rods for deep drilling and MF rods for medium/shallow fast drilling. Versatile Application: Ideal for underground mining, tunneling, geological survey, and rock anchoring. Efficient Power Transmission: Steadily delivers impact power and rotational torque for hole-drilling operations. Custom Fit Guarantee: We recommend compatible rods based on your specific rig model and thread size.