DCDMA-BS drill rods
Technodrill DCDMA-BS ("W" series) drill rods are manufactured from high quality cold drawn seamless steel tubes and include a separate coupling made of high tensile, heat treated alloy steel. They are in accordance with ISO 3551-1.1992 & BS 4019:Part3:1993. Straightness is more than 1:1800mm.
DCDMA-BS drill rods are heavy duty type with parallel walls, durable and resistant to wear.
Suitable for conventional drilling and available in sizes HW, NW, BW, AW & EW.
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TECHNICAL SPECIFICATIONS
| SIZE |
Rod O.D. A (mm) |
Rod I.D. B (mm) |
Coupling I.D. C (mm) |
Threads per inch (T.P.I.) |
|---|---|---|---|---|
| HW | 88.9 | 72.0 | 60.5 | 3 |
| NW | 66.7 | 50.8 | 35.0 | 3 |
| BW | 54.0 | 38.0 | 19.0 | 3 |
| AW | 43.8 | 31.7 | 16.0 | 3 |
| EW | 34.9 | 23.0 | 11.0 | 3 |
The standard effective lengths are 3.0 & 1.5 meters. Other lengths may be manufactured upon request.
All rods have right hand threads. Left hand threads can be manufactured if requested.
ACCESSORIES:
The full range of spare parts and accessories for DCDMA-BS drill rods is available:
- rod couplings
- water swivels
- hoisting plugs
- recovery/fishing equipment (recovery taps, bell taps) etc.
Accessories are also available for the "OLD" series DCDMA-BS drill rods, although it has been replaced by "W" series, in sizes H, N, B, A & E.
