Description Of Sdu25 Dowel
Sdu25 Dowel in the railway fastener system is a key component that connects the sleeper and the bolt. It is usually made of nylon and composite materials. Its main function is to fix the bolt, transfer the load and protect the bolt from the external environment.
The Sdu25 Dowel is used in conjunction with the Ss35 or DHS35 screw spike in the fastening system.
1. High durability and corrosion resistance
Resistant to acid, alkali, salt spray and ultraviolet rays, adaptable to harsh environments.
2. Excellent insulation performance
Blocking track current, preventing stray current from corroding rails and sleepers, and ensuring the safe operation of electrified railways.
3. Shock absorption and noise reduction
It can absorb the impact energy of the train, reduce the transmission of wheel-rail vibration to the sleeper, reduce the wear of the track structure, and reduce the operating noise.
4. Easy installation and low maintenance cost
The embedded design simplifies the construction process and does not require on-site drilling; the modular structure supports rapid replacement, and the single replacement time can be shortened to within 15 minutes, reducing labor costs.
Technical Specifications
Name |
Sdu25 Dowel |
Material |
PA6+30%GF,PA66+30GF |
Type |
Sdu25(Fixed length) |
Suitable |
For different sizes of screw spikes or anchor bolts |
General color |
Yellow, black, white, blue, green |
Packing |
Normal export packing, European standard pallet or as per customer’s requirements |
Advantages
How to Find a Qualified Rail Fastener Manufacturer?
Please choose LTRF.
Why Choose LTRF?
- Strong Technical Expertise
LTRF boasts a dedicated R&D center. Moreover, it maintains long-term collaborations with major industry players such as China Railway, CRCC, and the Academy of Railway Sciences. In addition, it also partners with leading railway universities. As a result, LTRF has been able to develop various innovative fastening systems for both domestic and international markets. Notably, all these systems possess independent intellectual property rights. Indeed, to date, LTRF holds over 30 invention and utility model patents.

- Professional Manufacturing
LTRF always aims for the best. We carefully choose the materials we use and make sure every part is made with great care and skill. And we believe in doing things perfectly, so we keep coming up with new ideas and check the quality of our products very carefully to make sure they’re good.
We work fast to make sure you get your order on time. And we offer good service before and after you buy something. At LTRF, we also focus on what our customers need. We’re committed to making good products and providing great service in everything we do.


- Competitive Pricing + Superior Quality
LTRF control the cost of each process, and the finance department updates the cost calculation regularly.
Furthermore, LTRF’s advanced testing equipment endows the company with comprehensive quality inspection capabilities for the entire fastener system. This meticulous quality-control measure is crucial for ensuring product reliability. Importantly, LTRF holds ISO and CRCC certification for railway products. These certifications not only demonstrate the company’s compliance with international and industry-specific standards but also enhance its credibility in the market.

