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

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Basic Information

Model NO.

Rail shoulder

Type

Shoulder

Package

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

Origin

China

HS Code

7318150000

Capacity

20000PCS/Day

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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 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).

Specification	UIC54	UIC60	Standard Rails
Material Name	QT500-7	QT450-10	QT400-15 (115RE, 50kg, 60kg, BS80lbs, BS100lbs)
Standard	GB 1348-88	GB 1348-88	GB 1348-89
Hardness	170~230HB	160~210HB	130~180HB
Organization	Ferrite & Pearlite	Graphite & Ferrite & Pearlite	Ferrite

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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.

1. Cast-in Rail Shoulder

The casting shoulders are pressed into concrete sleepers and work together with E-clips to fasten the rail. They are made from high-grade casting iron according to international standards like ISO1038 and DIN 1693.

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

2. Weld-on Rail Shoulder

The weld-on shoulder is used where the shoulder is welded onto a flat steel plate rather than the standard tie plate. Fabricated using hot forging and low or medium carbon steel, these are highly cost-effective for switch and crossing layouts.

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Chemical Composition Requirements

Material	C (%)	Si (%)	Mn (%)	P (%)	S (%)
QT400-15	3.50-3.60	3.0-3.2	≤0.5	≤0.07	≤0.02
QT450-10	3.40-3.90	2.7-3.0	0.2-0.5	≤0.07	≤0.03
QT500-7	3.60-3.80	2.5-2.9	0.6	≤0.08	≤0.025

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Frequently Asked Questions

What is the main function of a rail shoulder?

The primary function of a rail shoulder is to be cast into concrete rail ties to provide a secure fixing point for elastic rail clips, ensuring the rail remains stable and properly aligned.

What are the differences between Cast-in and Weld-on shoulders?

Cast-in shoulders are embedded directly into concrete sleepers during manufacturing. Weld-on shoulders are forged and designed to be welded onto flat steel plates or sections, offering flexibility for custom layouts.

What materials are used for production?

We use various grades of ductile iron (such as QT400-15, QT450-10, and QT500-7) for cast-in shoulders and low to medium carbon steel for weld-on forged shoulders.

Which international standards do your rail shoulders meet?

Our products comply with several global standards, including GB/T 1348, ISO1038, DIN 1693, JIS G5502, and BS EN 1563.

Can these shoulders be used with different rail types?

Yes, they are compatible with a wide range of rail profiles including UIC54, UIC60, 115RE, 50kg rail, 60kg rail, BS80lbs, and BS100lbs.

What is the daily production capacity?

We have a robust production capacity of approximately 20,000 pieces per day to meet large-scale infrastructure requirements.