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 Information

Model NO.

Rail Shoulder QT500-7 (GGG50)

Type

Shoulder

Package

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

Origin

China

HS Code

8602900000

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, 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).

Key Applications & Standards

Material	Standard	Application
QT500-7 (GGG50)	GB 1348-88	UIC54
QT450-10 (GGG45)	GB 1348-88	UIC60
QT400-15 (GGG40)	GB 1348-89	115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs

🟦 Mechanical Properties

Material	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)	Hardness (HB)
QT400-15	≥400	≥250	≥15	130~180
QT450-10	≥450	≥310	≥10	160~210
QT500-7	≥500	≥320	≥7	170~230

🟦 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 weld-on shoulder production method is hot forging, it is fabricated according to AREA standard. The steel material type for weld-on shoulders production can be low or medium carbon steel, which varies with specific requirements.

Railway shoulders can be welded on to longer length steel sleeper sections or bearers, for locations where fabrication of switch and crossing layouts where vertical rail geometry is employed. Its ability to be welded in specific positions dictated by layout design makes it particularly useful and cost-effective.

💡 Frequently Asked Questions

1. What are the two main types of rail shoulders?

The two primary types are cast-in shoulders, which are embedded in concrete sleepers, and weld-on shoulders, which are welded onto steel plates or sleepers.

2. What materials are used for cast-in rail shoulders?

They are typically made from ductile cast iron, including grades like QT400-15 (GGG40), QT450-10 (GGG45), and QT500-7 (GGG50).

3. What is the production capacity for these rail shoulders?

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

4. Which standards do the rail shoulders comply with?

Our products follow international standards including GB/T 1348, ISO1038, DIN 1693, JIS G5502, and BS EN 1563 among others.

5. When should I use a weld-on rail shoulder instead of a cast-in one?

Weld-on shoulders are ideal for switch and crossing layouts or when working with flat steel plates where embedding into concrete is not applicable.

6. What is the purpose of the rail shoulder in a fastening system?

The rail shoulder serves as a fixed anchor point to hold elastic rail clips (like E-clips) in place, ensuring the rail remains securely fastened to the sleeper.