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Help CenterRailway Sleeper Spring Clip, 304 Stainless Steel, 12mm Bar, 8kN Preload, Anti-corrosion Coating
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As a leading manufacturer based in Hengshui, Hebei, China, Anping County Boli Hardware Wiremesh Products Factory has been dedicated to producing high-quality railway fastening components since 1998. Our Railway sleeper spring clip, made from premium 304 stainless steel with a 12mm bar diameter and 8kN preload, is designed to deliver reliable performance in demanding rail environments. With an annual export value exceeding US$5 million and shipments through major ports like Tianjin, Qingdao, Shanghai, and Foshan, we have earned the trust of clients across North America, South America, Europe, Asia, Africa, and Oceania. This product combines superior corrosion resistance, consistent clamping force, and long service life to ensure safe and stable track structures.
Key Features & Technical Specifications
- Material Excellence: 304 stainless steel offers excellent resistance to rust and corrosion, ideal for outdoor and high-humidity railway applications.
- Diameter Precision: 12mm bar diameter ensures optimal stiffness and fatigue resistance, meeting standard rail fastening requirements.
- Consistent Preload: 8kN preload force maintains secure rail-to-sleeper clamping, reducing maintenance frequency and enhancing safety.
- Anti-Corrosion Coating: Additional protective layer extends service life even in coastal or chemically aggressive environments.
- Versatile Compatibility: Suitable for various sleeper types (wood, concrete, steel) and rail profiles, with customizable dimensions upon request.
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel (AISI 304) |
| Bar Diameter | 12 mm (±0.5 mm) |
| Preload Force | 8 kN (typical) |
| Coating Type | Anti-corrosion layer (optional colors available) |
| Operating Temperature | -40°C to +80°C |
| Standard Compliance | Customizable according to client specifications |
Detailed Product Advantages
The spring clip design ensures a constant clamping force that compensates for thermal expansion and vibration, reducing the risk of rail loosening. Our 304 stainless steel grade provides excellent mechanical properties, including high tensile strength and ductility, making the clip resistant to fatigue under repeated loading. The 12mm bar diameter strikes an ideal balance between flexibility and rigidity, allowing easy installation while maintaining secure hold. The anti-corrosion coating further enhances durability, especially in tunnels, bridges, and coastal lines where moisture and salt are prevalent. Compared to standard carbon steel clips, our stainless steel version offers a significantly longer lifespan, reducing total cost of ownership for railway operators.
Every clip undergoes rigorous quality control during production, including dimensional checks, hardness testing, and preload verification. We offer flexible customization options: bar diameter can be adjusted from 10mm to 14mm, preload force from 6kN to 12kN, and coating colors such as silver, black, or yellow. Our packaging meets international export standards, ensuring safe delivery to any port worldwide.
Trust & Reliability
With over 25 years of manufacturing experience and an annual export value of US$5 million to US$10 million, Anping County Boli Hardware Wiremesh Products Factory has established a strong reputation in the global railway supply chain. Our products are shipped to major markets including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Western Europe. We have served railways, metro systems, and industrial tracks with consistent quality and on-time delivery. Our factory is located in Hengshui, Hebei, a renowned hardware production base, allowing us to source high-quality raw materials and maintain competitive pricing. We welcome OEM/ODM inquiries and provide samples for evaluation. Contact us today for a quote or technical consultation.
Frequently Asked Questions
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What is the minimum order quantity?
Our standard MOQ is 500 pieces, but we can accommodate smaller trial orders for new customers. -
Can you provide samples before mass production?
Yes, samples are available upon request. Sample cost is negotiable and refundable for bulk orders. -
Is the anti-corrosion coating RoHS compliant?
Yes, our coating materials are environmentally friendly and comply with RoHS standards. -
What is the typical lead time?
For standard specifications, lead time is 15–20 working days after order confirmation. Custom orders may require additional time. -
Are these clips compatible with concrete sleepers?
Yes, our spring clips are designed to fit standard concrete sleeper inserts. Please provide your sleeper type for precise matching. -
How do you ensure consistent preload force?
We use calibrated pressing equipment and perform batch testing with a force gauge to guarantee 8kN ±5%. -
Do you offer technical support for installation?
Certainly, we provide installation guides and can arrange video support if needed. -
What shipping methods are available?
We ship via sea, air, or express based on order quantity and destination. FOB terms are available from Tianjin, Qingdao, Shanghai, or Foshan.
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