Medev Medical
1 / 5
Rail shoulder is cast in the concrete rail ties to fix the elastic rail clips. There are two types of rail shoulders available, the cast-in shoulder and the weld-on shoulder, both of which are used for the fixing of elastic rail clips. The casting shoulders as the embedded part of the railway fastening system are pressed in concrete sleeper and work together with the E clip to fasten the rail.
| Feature | Standard I | Standard II | Standard III |
|---|---|---|---|
| Application | UIC54 | UIC60 | 115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs, etc. |
| Material Grade | QT500-7 | QT450-10 | QT400-15 |
| Standard | GB 1348-88 | GB 1348-88 | GB 1348-89 |
The cast-in shoulder is made by casting from iron, following standards such as GB/T 1348-1988, NF EN 1563, ISO1038, DIN 1693, JIS G5502, KS D 4302, GOST 7293, or BS EN 1563. These are semi-embedded parts cast in concrete rail ties to fix the elastic rail clip to the base plate. Common variations include Single Stem Iron Shoulder for pre-stressed concrete ties and Twin Stem Iron Shoulder for Bi-Block or Twin Block concrete ties.
| Material | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|---|
| QT400-15 (GGG40) | 400 | 250 | 15 |
| QT450-10 (GGG45) | 450 | 310 | 10 |
| QT500-7 (GGG50) | 500 | 320 | 7 |
| Material | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| QT400-15 | 3.6-3.8 | 3.0-3.2 | 0.5 | 0.07 | 0.02 |
| QT450-10 | 3.4-3.9 | 3.7-3.0 | 0.5 | 0.07 | 0.03 |
| QT500-7 | 3.4-3.8 | 2.5-2.9 | 0.6 | 0.08 | 0.025 |
Weld-on shoulders are used where the shoulder is welded onto flat steel plates rather than standard tie plates. Fabricated via hot forging according to AREA standards, these use low or medium carbon steel. They are particularly effective for switch and crossing layouts where vertical rail geometry is required, offering a cost-effective solution for specific positioning.
