Subway Fasteners System

A "Subway Fasteners System" refers to a set of components used to secure rails to the track foundation (sleepers or slab) in a subway, ensuring safety, stability, and proper gauge. These systems are designed to handle the specific demands of urban rail, such as high frequency, heavy loads, and noise/vibration reduction. Key parts typically include elastic clips, screw spikes, rail pads, and tie plates.

Components of Subway Fastening System

• Elastic rail clips: Hold the rail securely to the sleeper while allowing for controlled expansion and contraction.

• Screw spikes: Threaded fasteners that are screwed into the sleeper to anchor the rail and other components.

• Rail pads: Resilient materials placed between the rail and the sleeper to absorb shock, dampen vibrations, and reduce noise.

• Tie plates (or base plates): Steel plates that distribute the load from the rail to the sleeper, preventing the rail from cutting into the sleeper and helping to maintain the track gauge.

• Pre-embedded plastic dowels: Used in concrete sleepers to provide secure anchor points for the other fasteners.

It applies to 60kg/m rail of sleeper without shoulder and is indirect spring system with Gauge Adjustment range: +8～-12mm.

It applies to 50kg/m rail and is indirect spring system with Gauge Adjustment range: +4～-8m.

DT Ⅲ applies to 60kg/m rail and DT Ⅳ applies to 50kg/m rail. This system's top adjustment height is 10mm and Gauge Adjustment range: +8～-12mm.

The main differences are that subway fasteners prioritize shock absorption and noise reduction for urban environments, often using rubber pads between the rail and a concrete track structure. In contrast, high-speed rail fasteners are designed for extreme stability and speed, using robust systems with precise, high-strength components to maintain gauge integrity and ensure safety at speeds over 300 km/h.

• Primary function: To provide shock absorption and noise reduction in urban areas, which can include tunnels.

• Key components: Often incorporates rubber pads or other damping materials between the rail and the concrete sleeper or slab track to reduce vibration and noise.

• Design focus: Complex designs are used to allow for real-time adjustable stiffness and to meet environmental protection requirements.

• Track structure: Frequently fixed directly to the floor or concrete slab rather than using ballast.

• Primary function: To ensure precise gauge (distance between tracks) and structural stability at very high speeds, with a focus on safety and durability.

• Key components: Consists of components like clips, fasteners, and base plates made from high-strength materials.

• Design focus: Precision and strength are paramount, with stringent manufacturing processes and high-quality steel used for components like rails, clips, and sleepers.

• Performance: Designed to withstand high stresses and vibrations generated by trains traveling at speeds over 300 km/h.

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GNEE RAIL is a professional supplier specializing in the international trade of railway fasteners, dedicated to providing high-quality connection solutions for the global rail transit industry. We consistently uphold the business philosophy of "Integrity and Quality First," focusing on building long-term, stable relationships with our customers. We strive for excellence in every aspect, from product selection to logistics and delivery.

We understand the importance of railway safety and take a rigorous and responsible approach to every order, ensuring that the products we deliver meet the requirements of diverse operating environments and climate conditions. Going forward, we will continue to expand our international market presence, optimize service quality, and contribute the power of Made in China to global railway construction.

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