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Railway Accessories Rail Iron Shoulder

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Product Description

Basic Info

Model NO.:Shoulder

Type:Shoulder

Transport Package:Cartons, Woven-Bags or Gunny-Bags in Wooden Cases

Origin:China

HS Code:7318150000

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 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, following international standards such as GB/T 1348-1988, NF EN 1563, ISO1038, DIN 1693, JIS G5502, KS D 4302, GOST 7293 or BS EN 1563.

Specification	UIC54	UIC60	Other Standards
Application	UIC54	UIC60	115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs, etc.
Material Name	QT500-7	QT450-10	QT400-15
Standard	GB 1348-88	GB 1348-88	GB 1348-89
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

Types of Rail Shoulder Produced

The Rail shoulder is a semi-embedded part cast in 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.

Single Stem Iron Shoulder: Used in pre-stressed concrete ties.
Twin Stem Iron Shoulder: Used in Bi-Block or Twin Block concrete ties.

Cast-in Rail Shoulder Mechanical Properties

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	3.7-3.0	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 the typical position of rail where the rail shoulder is welded on flat steel plate rather than the standard tie plate. The production method is hot forging, fabricated according to AREA standards. Material type can be low or medium carbon steel.

These shoulders can be welded onto longer length steel sleeper sections or bearers, making them particularly cost-effective for switch and crossing layouts where vertical rail geometry is employed.

Frequently Asked Questions

What is the primary function of a rail shoulder?

The primary function of a rail shoulder is to fix the elastic rail clips to the rail ties or base plates, ensuring the stability and safety of the railway tracks.

What are the main differences 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 steel sleepers, often used in special track layouts like switches and crossings.

Which materials are used for producing rail shoulders?

Cast-in shoulders are typically made from ductile iron (like QT400-15, QT450-10, or QT500-7), while weld-on shoulders are usually produced from forged low or medium carbon steel.

What standards do these rail components comply with?

The products follow international standards including GB/T 1348, ISO1038, DIN 1693, JIS G5502, and AREA standards for forged components.

How many rail shoulders can be produced daily?

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

Are rail shoulders compatible with different rail types?

Yes, they are designed to be compatible with various rail sections including UIC54, UIC60, 115RE, and 50kg/60kg rails.