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Help CenterSpring Clip for Railway Sleepers 383mm Length 13mm Diameter Heat Treated Spring Steel
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – your reliable partner in railway fastening solutions. Since 1998, we have been manufacturing high-quality hardware components for global infrastructure projects. Our Spring clip for railway sleepers, with a precise length of 383mm and a 13mm diameter, is meticulously crafted from heat treated spring steel to deliver exceptional elasticity and durability. This clip is designed to securely fasten rails to concrete or wooden sleepers, ensuring stable track geometry and long service life. Trust our two decades of expertise to provide you with components that meet the rigorous demands of modern railway systems.
The clip features a robust spring steel construction that undergoes a controlled heat treatment process, enhancing its fatigue resistance and ability to withstand repeated dynamic loads. Each unit is manufactured to tight tolerances, ensuring consistent performance across your entire rail network. Whether you are maintaining existing lines or constructing new tracks, our spring clip offers a reliable and cost-effective solution for reducing maintenance intervals and improving safety.
Key Features & Technical Specifications
- Precision Dimensions: Length 383mm ± 1mm, Diameter 13mm ± 0.2mm – ensures compatibility with standard sleeper rail fastening systems.
- Material Excellence: Made from high-carbon spring steel (e.g., 60Si2Mn or equivalent) with heat treatment to achieve optimal hardness and elasticity.
- Surface Finish Options: Available in black oxide, zinc plated, or plain finish for corrosion resistance. Custom coatings are available upon request.
- Uniform Spring Rate: Consistent clamping force across all clips, reducing the risk of loosening under vibration.
- Fatigue Life: Designed to exceed 3 million cycles in laboratory tests, offering long-term reliability.
- Easy Installation: Compatible with standard manual and hydraulic clip installing tools.
| Parameter | Value | Notes |
| Length | 383 mm | Tolerance: ±1 mm |
| Diameter | 13 mm | Tolerance: ±0.2 mm |
| Material | Spring Steel (60Si2Mn) | Heat treated to HRC 38-45 |
| Heat Treatment | Quenching + Tempering | Ensures elasticity and durability |
| Surface Finish | Black oxide / Zinc plated / Plain | Customizable upon request |
| Application | Railway sleepers (concrete/wood) | Compatible with standard rail fastening systems |
Advantages & Customer Benefits
- Reduced Maintenance Costs: The superior fatigue resistance minimizes the need for frequent replacements, lowering your total cost of ownership.
- Enhanced Safety: Consistent clamping force prevents rail creep and gauge widening, ensuring stable track alignment and safe train operations.
- Global Compatibility: Designed to meet common international rail profiles and sleeper systems, suitable for both mainline and industrial railways.
- Customizable Options: We can adjust dimensions, surface treatment, and packaging to meet your specific project requirements.
- Reliable Supply Chain: With an annual export value of US$5-10 million and shipments from multiple Chinese ports (Tianjin, Qingdao, Shanghai, Foshan), we ensure timely delivery to over 20 markets worldwide.
Our spring clips undergo rigorous quality control at every production stage – from raw material inspection to final dimensional checks. We use advanced testing equipment to verify hardness, spring rate, and surface finish, guaranteeing that every clip meets your expectations. Whether you need small trial orders or bulk container shipments, we have the capacity to deliver consistently.
Trust & Reliability – Why Choose Boli?
Anping County Boli Hardware Wiremesh Products Factory has been a trusted name in the hardware industry since 1998. With over 26 years of manufacturing experience, we have supplied railway components to clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. Our annual export value of US$5-10 million reflects the confidence our global customers place in our products. We are committed to providing high-quality spring clips at competitive prices, backed by responsive customer service and flexible logistics. Choose Boli for your railway fastening needs – experience the difference of professional manufacturing and dedicated support. Contact us today for a quote or free sample!
Frequently Asked Questions
Q1: What is the exact material of your spring clip?
A: Our spring clip is made from high-carbon spring steel, typically 60Si2Mn (or equivalent), which is heat treated to achieve the required hardness and elasticity. The specific grade can be customized based on your project specifications.
Q2: Can you provide clips with different lengths or diameters?
A: Yes, we offer customization. While the standard size is 383mm length and 13mm diameter, we can produce other dimensions according to your drawings or samples. Please contact our sales team with your requirements.
Q3: What surface treatments are available?
A: Common options include black oxide, zinc plating, and plain finish. For outdoor or high-corrosion environments, we can also apply hot-dip galvanizing or Dacromet coating upon request. Lead time and cost may vary.
Q4: How do you ensure the quality of each clip?
A: We implement a multi-stage quality control system: incoming material inspection, in-process dimensional checks, heat treatment verification (hardness test), and final appearance inspection. Samples are retained for each batch for traceability.
Q5: What is the minimum order quantity (MOQ)?
A: Our MOQ is typically 5000 pieces for standard sizes. For special customized orders, the MOQ may be higher. We also accept trial orders of 1000 pieces for new clients to evaluate quality.
Q6: How long is the lead time?
A: For standard products, lead time is about 15-20 days after order confirmation. Customized orders require 25-35 days, depending on complexity. We can expedite for urgent orders with prior arrangement.
Q7: Do you offer free samples?
A: Yes, we provide free samples for quality evaluation. The buyer is responsible for shipping costs. Sample production typically takes 5-7 days.
Q8: Can you ship to my country?
A: We ship globally from multiple Chinese ports. Our main markets include North America, South America, Europe, Southeast Asia, Africa, and Oceania. Please provide your destination port for a shipping quote.
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