Rail shoulder, also called rail iron shoulder, is mainly used to be cast in concrete ties to fixate elastic rail clips. According to the shape, it can be classified into Single Stem Rail Iron Shoulder and Twin Stems Rail Iron Shoulder. Besides, according to the manufacturing ways, rail shoulder can be divided into 3 types: casting rail shoulder, weld-on rail shoulder and hot forging rail shoulder.
The rail shoulder is embedded in concrete at the time of casting; it's used to grip the clip effectively and provides lateral support to the rail.
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 available: Cast-in Shoulder and Weld-on Shoulder, both of which are used for the fixing of elastic rail clips. 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.
1
Raw Material Inspection: Before producing Rail Shoulder, we will check and test the raw materials. We require production batch numbers, chemical composition, mechanical properties, and other testing indicators.
2
Manufacturing Sampling: Our quality control inspectors perform sample sampling and batch testing after the manufacturing process, providing raw material certificates and other means to control the testing process.
3
Physical & Chemical Testing: According to the different requirements of Rail Shoulder, we perform corresponding physical and chemical testing and inspection. Materials are only accepted if they meet strict standards.
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Final Quality Assurance: We organize regular quality control coordination meetings and provide technical advice to ensure that qualified products are delivered to our customers prior to shipment.
Frequently Asked Questions
What is the primary function of a rail shoulder?
A rail shoulder is embedded in concrete ties to fixate elastic rail clips, providing essential lateral support to the rail and ensuring it stays securely in place.
What are the different types of rail shoulders by manufacturing method?
Rail shoulders are generally classified into three types based on manufacturing: casting rail shoulder, weld-on rail shoulder, and hot forging rail shoulder.
How does a Single Stem differ from a Twin Stem rail shoulder?
Single Stem Iron Shoulders are typically used in pre-stressed concrete ties, while Twin Stem Iron Shoulders are designed for Bi-Block or Twin Block concrete ties.
What quality standards are followed during production?
The production processes are in accordance with ISO 9001 requirements, covering everything from raw material verification to physical and chemical testing of the finished product.
What information is required from raw material suppliers?
Suppliers must provide production batch numbers, chemical composition, mechanical properties, and other specific testing indicators before production begins.
How is the lateral support for the rail maintained?
Lateral support is maintained by the rail shoulder being cast directly into the concrete tie, which then grips the elastic clip firmly against the rail base.
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