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Product Description
Under sleeper pads are designed to enhance track stability, protect the underlying ballast layer, and provide effective isolation against vibrations. Their application extends across a wide range of railway infrastructure—including high‑speed lines, heavy‑haul routes, and existing standard‑gauge tracks—and they are equally well‑suited for both renewal projects and routine maintenance work.
These pads are pre‑bonded to the sleepers at the factory using an advanced adhesion system, which removes the need for any additional handling or fitting at the installation site. As a result, the mounting process is exceptionally fast, independent of weather conditions, and causes only minimal interruption to regular train operations.
Under Sleeper Pad插图

 

Key features

Enables quick installation via factory pre-assembly on sleepers
Delivers controlled elasticity to the track superstructure

 

Specification: Customize

Datasheet from customer:

  • Material: cellular mixed-polyurethane (PUR) elastomer with elastoplastic properties, incorporating a mounting mesh for attachment to concrete sleepers.
  • Static stiffness Cstat:0.22N/mm
  • Thickness: 10mm
  • Tensile strength: ≥2.5 MPa
  • Bond strength by pull-out of pads on concrete sleeper: >0.3 MPa
  • Static bedding modulus Cstat between 0.01 and 0.10 USP on concrete block (approval): 0.360 N/mm³
  • Fatigue test of USP on concrete block

 

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Frequently Asked Questions
What is SAFE Rail Fastening System (Zhejiang) Co., Ltd.?

SAFE Rail Fastening System (Zhejiang) Co., Ltd. is a leading manufacturer of rail fastening systems, with a total investment exceeding 50 million RMB and a factory area of over 50,000 ㎡. Strategically located in Zhejiang Province—China’s manufacturing hub—we specialize in providing high-quality rail fastening solutions for global markets.

The company is situated in Zhejiang Province, the heart of China’s manufacturing sector. This strategic location enables efficient access to supply chains, logistics networks, and industrial resources, supporting timely delivery of high-quality products to domestic and international customers.

Our annual output of rail fastening systems reaches 5 million sets, meeting large-scale project demands.

We operate an automated 3D warehouse with a storage capacity of 30,000 tons, ensuring efficient inventory management and product storage.

Our specialized production lines and laboratories are equipped with over 100 sets of advanced international automation and testing equipment. This ensures that every product adheres to the highest industry standards.

We comply with international standards including ISO 9001 (quality management), ISO 14001 (environmental management), and ISO 45001 (occupational health and safety management).

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