| Customization: | Available |
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| Standard: | API |
| Length: | 600mm-6400mm |
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ST58 the drill string components feature an entirely new thread design. Compared with T51 rods, the 40% larger rod cross-section of the ST58 MF rods provides 65% higher bending stiffness and withstands the Impact-waves from the piston much longer. So much so that both drill-rod and shank adapter life can be doubled. As an extra bonus, the more rigid drill string permits optimum drilling patterns and higher rates of penetration.
Compared with other drilling tool systems, ST58 system permits a wider hole range using the same rock drill. Have been specially developed for use with modern hydraulic top hammers and are available in a similar range to the standard Drill Rods. Plus ST58 Thread on 76mm Round material.
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
| EX-ROD | ||||
| Thread | Length(L) | Thread Type | Approx Weight(kg) | |
| mm | ft | |||
| R38-Round39-R38 | 3050 | 10' | Single | 24.0 |
| R38-Round39-R38 | 3050 | 10' | Double | 24.0 |
| R38-Round39-R38 | 3660 | 12' | Single | 29.0 |
| R38-Round39-R38 | 3660 | 12' | Double | 29.0 |
| T38-Round39-T38 | 3050 | 10' | Single | 24.0 |
| T38-Round39-T38 | 3050 | 10' | Double | 24.0 |
| T38-Round39-T38 | 3660 | 12' | Single | 29.0 |
| T38-Round39-T38 | 3660 | 12' | Double | 29.0 |
| T45-Round46-T45 | 3660 | 12' | Single | 40.0 |
| T45-Round46-T45 | 3660 | 12' | Double | 40.0 |
| T51-Round52-T51 | 3660 | 12' | Single | 50.0 |
| T51-Round52-T51 | 3660 | 12' | Double | 50.0 |
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