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 rail way 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(1997), ISO1038, DIN 1693, JIS G5502 (2001), KS D 4302, GOST 7293(1985) or BS EN 1563(1997).
| Specifications |
QT500-7 |
QT450-10 |
QT400-15 |
| Application |
UIC54 |
UIC60 |
115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs, ect. |
| Standard |
GB 1348-88 |
GB 1348-88 |
GB 1348-89 |
| Chemical Composition (%) |
C:3.60-3.80, Mn:0.2-0.5, Si:2.50-2.90, P:≤0.08, S:≤0.025 |
C:3.40-3.90, Mn:≤0.5, Si:2.70-3.00, P:≤0.07, S:≤0.03 |
C:3.50-3.60, Mn:≤0.5, Si:3.0-3.2, P:≤0.07, S:≤0.02 |
| 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 |
The Rail shoulder is semi-embedded part cast in the concrete rail ties to fix the elastic rail clip to the base plate. There are two Common types available: Cast-in Shoulder and Weld-on Shoulder. One is Single Stem Iron Shoulder used in pre-stressed concrete ties and the other is Twin Stem Iron Shoulder used in Bi-Block or Twin Block concrete ties.
Cast-in Rail Shoulder
Cast-in shoulders are pressed in concrete sleepers and work together with the E clip to fasten the rail. Made by casting from iron following international standards like ISO1038, DIN 1693, and BS EN 1563.
Mechanical Property & Requirements
| 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 |
Weld-on Rail Shoulder
The weld-on shoulder is used at typical rail positions where it is welded onto flat steel plates. Produced via hot forging according to AREA standards, utilizing low or medium carbon steel. These can be welded onto steel sleeper sections or bearers, making them cost-effective for switch and crossing layouts.
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Frequently Asked Questions
What are the main functions of a rail shoulder?
Rail shoulders are used to fix elastic rail clips to the base plate or concrete ties, ensuring the stability and safety of the rail track.
What is the difference between cast-in and weld-on shoulders?
Cast-in shoulders are embedded directly into concrete sleepers during manufacturing, while weld-on shoulders are welded onto flat steel plates or sleepers.
What materials are typically used for rail shoulders?
Cast-in shoulders are usually made of ductile iron (e.g., QT400, QT450, QT500), while weld-on shoulders are made of low or medium carbon steel.
Which international standards are followed?
Production follows various standards including GB/T 1348, ISO1038, DIN 1693, JIS G5502, and BS EN 1563.
What is the daily production capacity for these products?
The facility has a production capacity of approximately 20,000 pieces per day to meet large-scale railway project needs.
In what railway applications are these shoulders used?
They are widely used for UIC54, UIC60, 115RE, 50kg, 60kg, BS80lbs, and BS100lbs rail track systems.
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