Dextra Manufacturing (DM) is part of the Dextra Group of companies. DM develops, manufactures, and markets engineered products for use in concrete construction projects worldwide, such as bridges, power stations, buildings, tunnels, and other infrastructure. DM's core competency includes mechanical splices (couplers) and anchorages (headed bars) for reinforcing steel, as well as high tensile bars, GRFP products, and various concrete construction accessories.
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| Company type | Société anonyme |
|---|---|
| Industry | Manufacturing and distribution of construction products |
| Headquarters | Bangkok, Thailand |
Key people | Jean Marie Pithon (CEO), Hervé Lemoine (Managing Director) |
| Products | Mechanical Couplers & Anchorages (Rolltec, Bartec, Griptec), Sonitec |
Number of employees | 800 + (worldwide) |
| Website | www.dextragroup.com |
Mechanical Splices & Anchorages
editDextra manufactures various brands of mechanical splices and anchorages, designed in accordance with the differing levels of performance criteria found throughout the world. The most common features of Dextra's Rolltec, Bartec, and Griptec splices are that they are all "parallel-threaded" systems.
Some of the common features of Dextra's parallel threaded splicing systems are as follows:
- No specific torque is required to assemble the splicing system
- Inspection of the assembled system is visual
- Cross-threading of threads not possible
- Greater structural performance
| Parallel Threaded Feature | Griptec | Bartec | Rolltec | |
|---|---|---|---|---|
| “Simple” | ||||
| Position couplers SAME as Standard couplers | N | Y | Y | |
| No specific torque required | Y | Y | Y | |
| Visual assembly (no checking of torque required) | Y | Y | Y | |
| Greater Structural Performance | ||||
| Exceeds ACI-318, Type 1 & 2 criteria | Y | Y | Y | |
| No reduction in cross-sectional area | Y | Y | N | |
| Guarantees “bar-break” (ductile performance) | Y | Y | N | |
| Cost Saving Features | ||||
| Position couplers SAME as Standard couplers (single piece) | N | Y | Y | |
| Easier assembly (no specific torque required) = reduced placing costs | Y | Y | Y | |
| Lower thread production costs | Y | Y | Y | |
| Reduced space requirements | Y | N | Y |