A rail fish plate is a joint reinforcement bar that restores effective sectional strength at rail joints by mechanically linking the rail webs, ensuring smooth wheel passage across connections. GNEE RAIL supplies fish plates compatible with GB 8–60 kg/m rails, UIC standards, BS11 profiles, JIS rail sections, AS1085 rails, AREMA/ASCE rail sizes, as well as DIN536 and QU crane rail systems, with dimensional inspection prior to delivery.
| Standard | Type | Length/Diameter | Weight /Material | |
| AREMA 2007 | 115RE | 4 hole-24" | 17.04Kg | 45# chemical |
| 115RE | 6 hole-36" | 25.56Kg | composition(%): | |
| 132-136RE | 4 hole-24" | 17.75Kg | C: 0.42-0.50 | |
| 132-136RE | 6 hole-36" | 26.63Kg | Mn: 0.50-0.80 | |
| UIC864 | UIC60 | 4 hole-630/Φ26 | 18.07Kg | Si: 0.17-0.37 |
| UIC60 | 4 hole-600/Φ28 | 17.47Kg | Cr: ≤0.25 | |
| UIC60 | 4 hole-630/Φ25 | 18.1Kg | P: ≤0.035 | |
| UIC54 | 4 hole | 14.34Kg | S: ≤0.035 | |
| UIC54 | 6 hole-800 | 19.94Kg | ||
| BS 47-1 | BS75R | 4 hole | 6.56Kg | |
| BS60A | 4 hole | 5.61Kg | ||
| BS80A | 4 hole | 6.5Kg | ||
| BS90A | 685.8/Φ26 | 13.23Kg | 50# chemical | |
| BS90A | 792.9/Φ26.2 | 15.34Kg | composition(%): | |
| BS100A | 4 hole | C: 0.62-0.70 | ||
| 90/91LB | 4 hole | 18.08Kg | Mn: 0.50-0.80 | |
| 90/91LB | 6 hole | 19.9Kg | Si: 0.17-0.37 | |
| AS | 50kg | 4 hole | 14.3Kg | Cr: ≤0.25 |
| 50kg | 6 hole | 19.5Kg | P: ≤0.035 | |
| S49 | 4 hole | 9.71Kg | S: ≤0.035 |
How Rail Fish Plates Enhance Safety in Transportation Systems?
Rail fish plates enhance transportation safety by securely joining rail ends, maintaining precise track alignment, and ensuring vertical/lateral stability, which prevents derailments. They facilitate smooth load transfer between rails, reduce joint deflection, and allow for thermal expansion. These critical components prevent gap-related fractures and support modern signaling through insulated, durable designs.
Key Safety Enhancements Provided by Fish Plates:
- Structural Integrity: They connect rail ends, maintaining the correct gauge and height, which prevents misalignment-a common cause of accidents.
- Load Distribution: Fish plates ensure weight is evenly distributed across rail joints, reducing stress on individual rail ends and preventing fatigue-related failures.
- Thermal Expansion Management: By allowing for slight movements, they accommodate the expansion and contraction of rails due to temperature changes, preventing buckling.
- Impact Resistance: They are designed to withstand the high impact forces of passing wheels, especially in heavy freight applications, preventing joint deflection.
- Signal System Reliability: Insulated fish plates are crucial in modern railway signaling, such as Positive Train Control (PTC), ensuring electrical separation and preventing dangerous system failures.
Specialized Types for Increased Safety:
- Joggled Fish Plates: Specifically designed with a bend to rectify minor misalignments or height differences in rails.
- Insulated Fish Plates: Essential for track circuiting to keep automated signaling systems operational.
What is the material of the rail joint bar?
Rail joint bars (fish plates) are primarily manufactured from high-strength steel, specifically carbon steel or alloy steel, designed to withstand heavy loads and resist deformation. Common materials include hot-rolled steel (e.g., 55# steel, Q235, Q255), while insulated joints use specialized thermosetting composites or fiberglass for non-conductive properties.
Key Materials and Properties:
- Carbon Steel: Typically used for standard joint bars (e.g., 55# steel).
- Alloy Steel: Used for high-strength requirements.
- Insulated Materials: Thermosetting materials, composite, or fiberglass are used for insulating rail joints to provide electrical isolation, corrosion resistance, and UV protection.
- Manufacturing Processes: Hot-rolling, forging, or casting are common, with standard materials often including Q235 or Q255 steel.
| Material Type | Typical Grade / Designation | Chemical Composition (wt%) |
| Carbon Structural Steel | Q235 (GB/T 700) | C: ≤0.22 |
| Si: ≤0.35 | ||
| Mn: 0.30-0.65 | ||
| P: ≤0.045 | ||
| S: ≤0.045 | ||
| Carbon Structural Steel | Q255 (GB/T 700) | C: 0.18-0.28 |
| Si: ≤0.35 | ||
| Mn: 0.40-0.70 | ||
| P: ≤0.045 | ||
| S: ≤0.045 | ||
| Medium Carbon Steel | 50Mn / 50BA (GOST 10779) | C: 0.47-0.55 |
| Si: 0.17-0.37 | ||
| Mn: 0.80-1.20 | ||
| P: ≤0.040 | ||
| S: ≤0.045 |
Founded in 2008, GNEE RAIL is a leading global manufacturer and supplier of railway components, specializing in high-quality rail fish plates (joint bars/splice bars) with strong production capacity and global service capabilities.
Our rail fish plate portfolio is comprehensive and compliant with international standards including UIC, AREMA, BS, DIN, and GB, covering light rail (8kg-30kg), heavy rail (38kg-75kg), and crane rail (QU70-QU120) systems. We offer diverse types such as insulated joint bars, bulged fish plates, and compromise rail joints,with precise specifications (4-hole/6-hole, 24-inch/36-inch), ensuring excellent mechanical performance.We uphold strict quality control supported by ISO 9001:2015 certification, an in-house inspection center, and third-party audits by SGS and BV. Our one-stop service includes customization, production, packaging, and after-sales support, tailored to clients' project needs.
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