Cast-in Rail Shoulder in Railway Fastening System

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Cast-in Rail Shoulder in Railway Fastening System

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Product Description

Basic Info.

Model NO.

Rail shoulder

Type

Shoulder

Transport Package

Cartons, Woven-Bags or Gunny-Bags in Wooden Cases

Origin

China

HS Code

7318150000

Production Capacity

20000PCS/Day

Product Description

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, meeting standards 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	Chemical Composition (%)
UIC54, UIC60, 115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs	GB 1348-88 / GB 1348-89	C: 3.40-3.90, Si: 2.50-3.2, Mn: ≤0.5, P: ≤0.08, S: ≤0.03

Types of Rail Shoulder Produced

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. One is a Single Stem Iron Shoulder used in pre-stressed concrete ties, and the other is a Twin Stem Iron Shoulder used in Bi-Block or Twin Block concrete ties.

Cast-in Rail Shoulder

The casting shoulders as the embedded part of the railway fastening system are pressed in concrete sleepers and work together with the E clip to fasten the rail.

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

Cast-in Rail Shoulder Chemical Composition:

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

Weld-on Rail Shoulder

The weld-on shoulder is used at typical positions of the rail where the shoulder is welded onto a flat steel plate rather than the standard tie plate. The production method is hot forging, fabricated according to the AREA standard. The steel material can be low or medium carbon steel based on specific requirements. These shoulders can be welded onto longer steel sleeper sections or bearers, making them cost-effective for switch and crossing layouts.

Frequently Asked Questions

What are the primary types of rail shoulders available?

The two main types are Cast-in Shoulders, which are embedded in concrete sleepers, and Weld-on Shoulders, which are welded onto steel plates or sleepers.

What materials are used for manufacturing cast-in shoulders?

They are typically made from cast iron, such as QT400-15, QT450-10, or QT500-7, depending on the required tensile strength and elongation.

Which rail standards are these shoulders compatible with?

They are designed to support various standards including UIC54, UIC60, 115RE, and various kg rail specifications (50kg, 60kg, etc.).

How is the weld-on shoulder produced?

Weld-on shoulders are manufactured using a hot forging process and are typically made from low or medium carbon steel.

What is the production capacity for these components?

The current production capacity is approximately 20,000 pieces per day to meet large-scale infrastructure demands.

Why use weld-on shoulders instead of standard tie plates?

Weld-on shoulders are particularly useful in switch and crossing layouts where specific rail geometry is required, offering a cost-effective and flexible fabrication solution.