Rail Shoulder Qt400-15 (GGG40) Qt450-10 (GGG45) Qt500-7 (GGG50)

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Rail Shoulder Qt400-15 (GGG40) Qt450-10 (GGG45) Qt500-7 (GGG50)

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Product Description

Basic Specifications

Model NO.Rail Shoulder QT500-7 (GGG50)

TypeShoulder

Transport PackageCartons, Woven-Bags in Wooden Cases

OriginChina

HS Code8602900000

Production Capacity20000PCS/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 international standards such as GB/T 1348-1988, ISO1038, and DIN 1693.

Property	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

Cast-in Rail Shoulder Types

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: 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.

Weld-on Rail Shoulder

The weld-on shoulder is used at the typical position of rail where the rail shoulder is weld on flat steel plate rather than the standard tie plate. The production method is hot forging, fabricated according to AREA standards. The steel material can be low or medium carbon steel based on specific requirements.

Frequently Asked Questions

What is the primary function of a rail shoulder?

The primary function of a rail shoulder is to be cast into or welded onto rail ties/plates to securely fix 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 casting, while weld-on shoulders are welded onto steel plates or sections, offering flexibility for switch and crossing layouts.

What materials are typically used for manufacturing rail shoulders?

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

Which standard do these rail shoulders follow?

Our products comply with various international standards including GB/T 1348, ISO1038, DIN 1693, JIS G5502, and AREA standards for forged components.

In what applications are Weld-on shoulders most cost-effective?

They are highly cost-effective for switch and crossing layouts where vertical rail geometry is used, as they can be welded in specific positions dictated by custom designs.

What is the daily production capacity for these components?

The current production capacity reaches up to 20,000 pieces per day, ensuring reliable supply for large-scale railway projects.