A rail fish plate is a load-transfer component used in jointed track to distribute forces from one rail to the next, preventing stress concentration at the rail gap. GNEE RAIL produces fish plates for UIC50/54/60, GB rails, JIS standards, AS1085 profiles, BS11 sections, AREMA/ASCE rails, and heavy-duty crane rails under DIN536 and QU specifications, offering corrosion protection options.
What is the GOST P50/P65 rail joint bar fishplate?
The P65 fishplate, also known as a P65 rail joint bar, is a key component used to connect adjacent rail sections in railway track systems. Specifically designed for P65 rails, it provides a robust mechanical connection that ensures precise rail alignment and facilitates the efficient transfer of loads between rails. P65 fishplates are essential for mainline railways, heavy-haul lines, and industrial rail systems, where high performance and durability are critical.
- Grade: 50Mn
- Length: 800mm
- Model Number: GOST P50/P65/P75 rail fishplate
- Type: Heavy Rail
- Application: Railway Rail
- Weight: Around 15 -24kg/pc
- Bolt Hole Diameter: 26mm
- Applicaiton: Joint both end of rail
- Packaging Details: Steel belt tie can be loaded by forklit
Production Process of P65 Fishplate
The production process of P65 fish plates (joint bars) involves hot-rolling carbon steel (often 55# steel) or alloy steel, followed by precision machining, hot-forging, and heat treatment to ensure durability under high loads. Key steps include blanking, heating, hot forging, punching, drilling bolt holes (4 or 6), and surface treatment.
Key Steps in P65 Fish Plate Production:
- Material Selection & Preparation: Medium or high carbon steel, such as 55# steel, is typically used for its high-strength properties.
- Heating & Forging: The steel is heated to a high temperature and forged, often using heavy-duty equipment like 300T to 8000T presses, to achieve the specific fishplate profile.
- Hot Rolling: The metal is shaped through a rolling process to create the necessary cross-sectional geometry.
- Drilling/Punching: Bolt holes (4 or 6 holes) are drilled or punched to precise tolerances, according to TB/T2342 standards.
- Heat Treatment: Quenching and tempering are often applied to enhance the strength and toughness of the fishplate.
- Surface Treatment & Finishing: The finished plates may undergo surface treatments to improve corrosion resistance before being packed, typically in bundles.
These plates are designed to securely connect P65/R65 railway rails to maintain alignment.
Why use a rail joint bar?
Rail joint bars, also known as fishplates or splice bars, are used to securely connect rail ends, ensuring structural continuity, proper alignment, and safe, smooth train passage. They play a critical role in distributing wheel loads across joints, preventing rail damage, and restricting lateral and longitudinal movement.
Key Reasons for Using a Rail Joint Bar:
- Structural Integrity and Connection: They securely join two rail ends together, providing strength and stiffness to the rail track system.
- Load Distribution: They help distribute the weight of the train evenly across rail joints, which reduces stress and prevents rail damage.
- Alignment and Stability: They maintain proper vertical and horizontal alignment, ensuring a smooth surface for train wheels, reducing impact, and enhancing safety.
- Thermal Expansion Management: They provide necessary gaps for rail expansion and contraction, which is essential for managing thermal stresses in the rail.
- Maintenance and Flexibility: They are easy to install, remove, and replace, making them convenient for repair crews, particularly at road crossings or where track maintenance is frequent.
- Cost-Effectiveness: They offer a straightforward, cost-effective solution for joining rails compared to other methods, while providing durable performance.
Rail joint bars are essential components, acting as a crucial element for ensuring the safety and longevity of railway infrastructure, supporting both light and heavy rail traffic.
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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