A rail fish plate is a joint reinforcement component that mechanically links adjacent rail sections by clamping their webs together, allowing wheel loads to pass smoothly across joints without excessive impact. It is indispensable in conventional jointed track. GNEE RAIL manufactures fish plates for GB light and heavy rails, UIC rails, DIN536 and QU crane rails, JIS rails, AS1085 profiles, BS11 rails, and AREMA/ASCE sections, supported by profile-matching inspection services.
Hot Fish Plate from GNEE RAIL:
| 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 |
52 kg rail fish plate weight
A standard 52 kg rail fish plate (or joint bar) typically weighs between 12 kg and 28 kg per piece, with a common 4-hole joggled type for 52 kg/m rails weighing approximately 16.97 kg to 17.38 kg. They are used in pairs, so a full joint set often weighs over 30 kg.
Key Specifications for 52 kg Rail Fish Plates:
- Weight Range: 12–15 kg (common) to 28 kg (heavy-duty) per piece.
- Weight per Pair: Approx. 26.5 kg to 28.71 kg for 52 kg rails.
- Dimensions: Standard length is often 610 mm (4-hole) or 685 mm (6-hole).
- Material: Usually hot-rolled carbon steel.
- Application: Suitable for 52 kg/m rail sections in heavy-duty track applications.
- Joggled Variant: 52 kg joggled fish plates, often used for repair, typically weigh around 17.25 kg to 17.38 kg each.
Materials for railway fish plates
Railway fish plates (joint bars) are primarily manufactured from high-strength, durable materials designed to withstand heavy, dynamic rail loads, ensuring structural integrity and preventing deformation. Common materials include hot-rolled or forged medium to high-carbon steel 45#, 50#, manganese steel 50Mn for high toughness, and structural steel grades (Q235, Q345).
Chemical Composition Table (Main Elements, wt%)
| Grade/Standard | C | Si | Mn | P (max) | S (max) | Other Notes |
|---|---|---|---|---|---|---|
| 45# (GB/T 699) | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | Quality carbon steel |
| 50# (GB/T 699) | 0.47-0.55 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | Quality carbon steel |
| 50Mn (GB/T 699) | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | Mn-enhanced carbon steel |
| Q235 (GB/T 700) | ≤0.22 | ≤0.35 | 0.30-0.65* | 0.045 | 0.050 | *Deoxidation method dependent |
| Q345 (GB/T 1591) | ≤0.20 | ≤0.55 | 1.00-1.60* | 0.045 | 0.045 | Contains Microalloys (e.g., V, Nb, Ti) |
| Rail Fishplate | ||||||
| - Typical (e.g., B7/B7M) | 0.40-0.60 | 0.15-0.58 | 0.60-1.20 | 0.030-0.040 | 0.030-0.040 | Specific to rail grade (e.g., matched to U71Mn rail) |
Technical Parameters Table (Typical Mechanical Properties)
| Grade/Standard | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) | Key Application / Note |
|---|---|---|---|---|---|
| 45# | ≥355 | ≥600 | ≥16 | 170-217 | Shafts, gears, mechanical parts |
| 50# | ≥375 | ≥630 | ≥14 | 187-229 | High-strength mechanical parts |
| 50Mn | ≥390 | ≥660 | ≥13 | 197-241 | Springs, wear-resistant parts |
| Q235 | ≥235 | 370-500 | ≥26 | - | Structural steel, general use |
| Q345 | ≥345 | 470-630 | ≥21 | - | Heavy structures, construction |
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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