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).
| Application |
Standard Name |
Standard Name |
Details |
| UIC54 / UIC60 |
QT500-7 |
QT450-10 |
115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs, ect. |
| Standard |
GB 1348-88 |
GB 1348-88 |
GB 1348-89 |
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.
Cast-in Rail Shoulder Mechanical Property
| 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 |
Chemical Composition Requirements
| 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 | 2.7-3.0 | 0.5 | 0.07 | 0.03 |
| QT500-7 | 3.4-3.8 | 2.5-2.9 | 0.6 | 0.08 | 0.025 |
The weld-on shoulder is used at the typical position of the rail where the rail shoulder is welded on a flat steel plate rather than the standard tie plate. The production method is hot forging, fabricated according to AREA standards. Material types can be low or medium carbon steel, varying with specific requirements.
These shoulders can be welded onto longer length steel sleeper sections or bearers, particularly useful for switch and crossing layouts where vertical rail geometry is employed.
?
Frequently Asked Questions
What are the primary types of rail shoulders available?
There are two main types: Cast-in shoulders, which are embedded in concrete sleepers, and Weld-on shoulders, which are welded onto flat steel plates or sleepers.
What materials are used for cast-in rail shoulders?
They are typically made from ductile iron grades such as QT400-15 (GGG40), QT450-10 (GGG45), and QT500-7 (GGG50).
Which standards do these rail shoulders comply with?
Our products meet several international standards including GB/T 1348, ISO 1038, DIN 1693, JIS G5502, and BS EN 1563.
What is the daily production capacity for these components?
The production facility has a capacity of approximately 20,000 pieces per day to ensure timely delivery for large-scale projects.
How are the rail shoulders packaged for international shipping?
They are securely packed in cartons, woven bags, or gunny bags, which are then placed in sturdy wooden cases for transport protection.
Where is the weld-on shoulder specifically used?
Weld-on shoulders are ideal for switch and crossing layouts or locations where vertical rail geometry requires custom placement on steel sleepers or bearers.
Sete Orthopedic Implants
