Tonk Orthopedic Implants
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. The cast-in shoulder is made by casting from iron, such as GB/T 1348-1988, NF EN 1563, ISO1038, DIN 1693, and BS EN 1563 standards.
| Feature | QT500-7 | QT450-10 | QT400-15 |
|---|---|---|---|
| Application | UIC54 | UIC60 | 115RE, 50kg/60kg rail, BS80lbs, etc. |
| Tensile Strength | ≥500 Mpa | ≥450 Mpa | ≥400 Mpa |
| Yield Strength | ≥320 Mpa | ≥310 Mpa | ≥250 Mpa |
| Elongation | ≥7% | ≥10% | ≥15% |
| Hardness (HB) | 170~230 | 160~210 | 130~180 |
The Rail shoulder is a semi-embedded part cast in the concrete rail ties to fix the elastic rail clip to the base plate. There are two common types of rail shoulders: Cast-in Shoulder and Weld-on Shoulder. One is the Single Stem Iron Shoulder used in pre-stressed concrete ties, and the other is the Twin Stem Iron Shoulder used in Bi-Block or Twin Block concrete ties.
The weld-on shoulder is used at typical rail positions where the shoulder is welded onto flat steel plates rather than standard tie plates. The production method is hot forging, fabricated according to AREA standards. Material options include low or medium carbon steel based on specific requirements.
These shoulders can be welded onto longer length steel sleeper sections or bearers, particularly for switch and crossing layouts where vertical rail geometry is employed. This flexibility makes them highly cost-effective for layout designs.
