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Cast-in Rail Shoulders: Prefabricated pieces in concrete sleepers, either single or double, used to secure elastic rails within a fastening system, mainly electronic fastenings. Cast iron shoulders are pre-embedded in concrete sleepers and used together with elastic clips to fix the rails.
Weld-on Shoulders: Designed for special trackwork locations that do not permit the use of standard tie plates. These are used on switches, scales, steel structures, and maintenance facilities. Generally used on flat steel plates, these shoulders are beveled to facilitate welding and provide optimum lateral resistance and maximum clip-toe load.
| Material | QT500-7 | QT450-10 | QT400-15 |
|---|---|---|---|
| Tensile Strength | ≥500 Mpa | ≥450 Mpa | ≥400 Mpa |
| Yield Strength | ≥320 Mpa | ≥310 Mpa | ≥250 Mpa |
| Elongation | ≥7 | ≥10 | ≥15 |
| Hardness | 170~230HB | 160~210HB | 130~180HB |









XOVEC Orthopedic Implants