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Help CenterNylon Sleeve for Concrete Sleepers Used in Railway Track Fixing, M24 Thread, Smooth Inner Surface
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998, specializing in high-quality railway fastening components. Our Nylon Sleeve for Concrete Sleepers with M24 thread and smooth inner surface is engineered to deliver reliable performance in railway track fixing systems. With over two decades of manufacturing expertise and annual exports exceeding US$5 million, we supply to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. This product is the result of continuous innovation and strict quality control, ensuring a perfect fit for your rail infrastructure projects.
Designed specifically for use with concrete sleepers, this nylon sleeve provides a durable, non-corrosive solution for securing rail fastening systems. The M24 internal thread accommodates standard bolts, while the smooth inner surface minimizes friction during installation and maintenance. Whether you are upgrading existing tracks or building new railway lines, our sleeve offers exceptional resistance to vibration, impact, and environmental stress – all at a cost-effective price point.
Key Features & Benefits
- Premium Nylon Material – Made from high-grade engineering nylon (PA6/PA66), offering excellent tensile strength, wear resistance, and long service life in outdoor railway environments.
- M24 Metric Thread – Precision-molded threads ensure a secure fit with standard M24 bolts, eliminating loose connections and reducing maintenance frequency.
- Smooth Inner Surface – The polished bore reduces friction when inserting bolts, allowing faster installation and easier removal during track servicing.
- Concrete Sleeper Compatibility – Specifically designed to match the dimensions and anchoring requirements of concrete sleepers, providing stable support for rail clips and base plates.
- Weather & Chemical Resistance – Withstands UV radiation, moisture, salt spray, and common track chemicals without degradation, making it suitable for coastal, desert, and cold climate regions.
- Vibration Dampening – The inherent elasticity of nylon helps absorb shock and vibration from passing trains, reducing noise and protecting rail components.
- Customizable Length Options – Available in standard lengths (100mm, 150mm, 200mm) and can be customized to meet specific project requirements.
- Cost-Effective Alternative – Compared to metal sleeves, our nylon version offers lower weight, easier handling, and no risk of rust or galvanic corrosion.
Technical Specifications
| Parameter | Value |
| Material | Engineering Nylon (PA6/PA66) |
| Thread Size | M24 (Metric Coarse) |
| Inner Surface Finish | Smooth (Ra ≤ 1.6 μm) |
| Outer Diameter | 32mm (Standard) |
| Length Options | 100mm, 150mm, 200mm (Customizable) |
| Operating Temperature Range | -40°C to +120°C |
| Tensile Strength (Breaking Load) | ≥ 80 MPa |
| Color | Black (Other colors available upon request) |
| Packing | Cartons, Pallets, or as per customer requirement |
Why Choose Anping Boli?
With 25+ years of manufacturing experience and a dedicated R&D team, we have perfected the production of nylon sleeves for railway applications. Our factory is located in Hengshui, Hebei – a well-known hardware manufacturing hub in China. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring fast and reliable delivery to global customers. Our annual export volume of US$5 million to US$10 million reflects the trust that railway contractors and infrastructure companies place in our products.
Every batch of sleeves undergoes rigorous quality checks: dimensional accuracy, thread gauge testing, and inner surface smoothness verification. We also offer customized solutions – from length adjustment to color matching – to meet your unique project specifications. Our after-sales team provides prompt technical support, making us a preferred partner for railway maintenance departments and OEM manufacturers.
Frequently Asked Questions (FAQ)
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Q: Is this sleeve compatible with standard M24 bolts used in railway tracks?
A: Yes, the internal thread is precisely molded to M24 metric standard, ensuring a secure fit with standard M24 hex bolts or studs. -
Q: Can the sleeve be used in extreme weather conditions like heavy rain or snow?
A: Absolutely. The nylon material is UV-resistant, waterproof, and remains flexible in low temperatures down to -40°C, making it suitable for all climates. -
Q: What is the typical service life of this nylon sleeve under normal railway traffic?
A: With proper installation and maintenance, the sleeve can last 10–15 years, depending on traffic density and environmental factors. -
Q: Do you offer samples for testing before bulk order?
A: Yes, we provide free samples (shipping cost may apply) for quality evaluation. Contact us for sample request. -
Q: How is the inner surface smoothness achieved?
A: We use high-precision injection molds and post-processing polishing to achieve a smooth inner surface (Ra ≤ 1.6 μm), which reduces friction and eases bolt insertion. -
Q: Can you customize the length or outer diameter?
A: Yes, we offer customization for length, outer diameter, and color based on your drawings or specifications. MOQ applies for custom sizes. -
Q: What packaging options are available for export?
A: Standard packaging is in cartons with inner bubble wrap, then palletized. We can also use wooden crates or bulk bags as per your requirement. -
Q: Do you have any certifications for quality management?
A: While we do not explicitly mention certifications in this listing, we follow strict internal quality control procedures. Certificates can be provided upon request if applicable to your market.
Ready to upgrade your railway track fixing system? Contact Anping Boli today for a quotation or technical consultation. Our team is committed to providing you with high-quality nylon sleeves that meet your project’s exact requirements. With reliable shipping from multiple Chinese ports and a proven track record of global exports, we are your trusted partner in railway infrastructure components.
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