A rail fish plate is a mechanical coupling device that allows separate rail lengths to behave as a continuous structural member by transferring loads through bolted steel interfaces. This is fundamental in jointed rail systems without welding. GNEE RAIL manufactures fish plates matched to GB rails, UIC standard rails, DIN536 and QU crane rail applications, JIS rail sections, AS1085 rails, BS11 standards, and AREMA/ASCE rail profiles, with compatibility verification services.
| Fishplate for UIC Standard Steel Rail | |||
| Steel Rail Type | Steel Rail Weight (KG/M) | Fishplate Standard | Fishplate Material |
| UIC54 | 54.43 | UIC | 45#,55# |
| UIC60 | 60.34 | ||
| Fishplate for BS Standard Steel Rail | |||
| BS50'O' | 24.833 | BS 47-1 | 55#,45# European Grade 700 |
| BS60A | 30.618 | ||
| BS75R | 37.041 | ||
| BS80A | 39.761 | ||
| BS90A | 45.099 | ||
| BS100A | 50.182 | ||
| BS113A | 56.398 | ||
| Joint Bar for AREMA 2007 Standard Steel Rail | |||
| 100RE(TR50) | 50.35 | AREMA 2007 | 45#,55#,AREMA Grade Steel |
| 115RE | 56.9 | ||
| 115-119RE | |||
| 132RE | 65.31 | ||
| 133RE | 66.1 | ||
| 136RE | 67.41 | ||
| 132-136RE | |||
| Fishplate For Chinese Standard Steel Rail | |||
| GB15KG | 15.2 | YB226-63 | Q235,45# |
| GB18KG | 18.06 | YB225-63 | |
| GB22KG | 22.3 | YB14-63 | |
| GB24KG | 24.46 | ||
| GB30KG | 30.1 | YB351-63 | |
| GB38KG | 38.733 | TB/T 2345-2008 | 45#,55# |
| GB43KG | 44.653 | ||
| GB50KG | 51.514 | ||
What is the number of fish bolts per fish plate?
A standard railway joint uses four fish bolts per pair of fish plates (two bolts passing through each rail end). While four is the standard, some longer or heavy-duty joints may use six bolts. These bolts, along with nuts, washers, and spring washers, secure the fish plates on both sides of the rail web.
Key Details Regarding Fish Bolts:
- Purpose: To connect rail ends, ensuring horizontal and vertical alignment while allowing for expansion.
- Standard Configuration: 4 bolts per joint.
- Long Joint Configuration: 6 bolts per joint (often used for specific, heavier tracks).
- Components: Each joint typically includes 4 bolts, 4 nuts, and 4 sets of washers.
| Railway Fish bolt | ||||
| Grade | 4.6 | 5.6 | 8.8 | 10.9 |
| Material | Q235 | 35# | 45# | 40Cr |
| Mechanical properties | Tensile strength: ≥400Mpa | Tensile strength: ≥500Mpa | Tensile strength:≥800Mpa | Tensile strength: ≥1000Mpa |
| Yield strength:≥240Mpa | Yield strength:≥300Mpa | Yield strength:≥640Mpa | Yield strength:≥900Mpa | |
| Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
| Cold bending: | Cold bending: | Cold bending: | Cold bending: | |
| 90 degree without crac | 90 degree without crac | 90 degree without crac | 90 degree without crac | |
| Surface | plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing | |||
| Standard refers | UIC864-2 | |||
Why use rail fish bolts in rail joint bars?
Rail fish bolts are essential fasteners used to securely connect rail joint bars (fish plates) to the ends of rails, maintaining structural integrity, precise alignment, and gauge. They preven joint separation under heavy, dynamic train loads, resist vertical and horizontal forces, and allow for safe thermal expansion and contraction.
Key reasons for using rail fish bolts include:
- Structural Integrity: They hold the fish plates firmly against the rail web, preventing misalignment that could lead to derailments.
- Load Distribution: By securing the joint bars, fish bolts help transfer wheel loads from one rail to the next, reducing fatigue damage at the joint.
- Safety and Stability: They ensure the track gauge (width) is maintained and the rail top surface remains smooth, resisting intense vibrations and impacts.
- Accommodating Movement: The bolt holes are often designed to allow the rails to expand or contract due to temperature changes without breaking the connection.
- Easy Installation/Maintenance: Unlike welded joints, bolted joints are easier to install, remove, and maintain, making them ideal for specific track requirements.
High-tensile, specialized fish bolts are typically used to meet strict safety standards for heavy-haul, high-speed, or mining railway applications.
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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