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ST68 Speed Rod

Drill rod using thread system. Drilling precision can be further improved by using this as the first rod in a normal drill string. Furthermore, since this is a speed rod design it will produce straighter holes and at least 10% higher penetration rate in good rock conditions compared to rod and coupling sleeve combination system.

Widely used in drifting, tunneling, benching, and long hole drilling

High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance

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Product Details

It is common practice to bump up the drive end of drifting drill steel for added strength at the rock drill end to accommodate larger diameter and shank adapters. Drill steel of rock drilling tools is available in many standard lengths to match the drill feeds on a multitude of available drifting jumbos. A rock drill bit diameter closer to the steel diameter can be used since the coupling does not enter the hole, this enhances flushing and hole accuracy.

MF Rod

Length

Diameter

Weight
approx
kg

TIANYUE P/N

Foot

inch

Drill tube

Flushing hole 30mm.

ST68 Speed Rod