A is a joint reinforcement element that maintains rail alignment and ensures structural cooperation between adjacent rails, preventing differential deflection at the joint. GNEE RAIL provides fish plates compatible with GB rails, UIC50–UIC60, DIN536 and QU crane rails, JIS rail types, AS1085 profiles, BS11 standards, and AREMA/ASCE rail sections, offering bolt selection, pre-drilling, and installation instructions.
What are the specifications and types of GOST Standard rail joints?
GOST standard rail joints are crucial for connecting rail sections (such as P50, P65, P75) in Russian and similar rail networks, often categorized into 4-hole or 6-hole types based on fastening capacity. Common types include standard fishplates (joint bars) for bolted joints, insulated joints, and expansion joints for specialized applications.
Key Specifications and Types
- GOST Rail Types: P50 (51.8 kg/m), P65 (64.88 kg/m), and P75.
Drawing of GOST 1P-65 P65 rail joint fishplate
Section of GOST 1P-65 P65 rail joint fishplate
Technical Specifications & Application Summary: 1P-65 / 1R-65 Fishplate
| Item | Specification & Description |
|---|---|
| Product Designation | 1P-65 / 1R-65 Fishplate |
| Governing Standard | GOST 8193-73 |
| Dimensions (L x W x H) | 1000 x 130 x 60 mm |
| Material | M54 Open-Hearth Steel, Carbon Content: 0.45 - 0.62% |
| Tensile Strength | ≥ 860 MPa |
| Yield Strength | ≥ 540 MPa |
| Brinell Hardness | 235 - 388 HB |
| Unit Weight | 28.5 kg |
| Quantity per Metric Ton | Approximately 35 pcs |
| Primary Function & Design | Serves as an adapter fishplate for rail joints, designed for use with spike and spring rail fastenings on R-65 rails. |
| Connection Applications | 1. Same Type Rail Connection: Used for joining two sections of R-65 rails. 2. Different Type Rail Connection: The six-hole 1R-65 variant (1000mm length) is used for joining R-65 to R-75 rails. |
| Installation Method | The fishplate is secured to the inner and outer sides of the rail web using M24 x 160 mm joint bolts. |
GOST P50 rail joint bar fishplate
Fishplate Types:
- 4-Hole Joints: Generally used for lighter duty or specific joint applications.
- 6-Hole Joints: Commonly used for heavier rail loads, providing stronger, more stable connections.
Key Design Features:
- Material: Usually made from high-strength carbon steel (e.g., U71Mn).
- Joint Type: Includes suspended, supported, or bridged joints, with 45° slanted joints used for expansion.
- Structural Form: Oval holes are standard to allow for expansion.
- Crane Rails: Specialized GOST 4121-96 rail joints for crane rails (KP80, KP100, KP120, KP140) are also produced.
These joints must maintain the same stiffness as the rail itself while accommodating expansion and contraction.
What is the function of a rail joint?
A rail joint, often utilizing fishplates (joint bars) and bolts, connects two rail ends to ensure continuous track structural integrity, allowing for thermal expansion and contraction while maintaining horizontal and vertical alignment. These joints distribute heavy, shifting loads, support safe passage for train wheels, and facilitate maintenance.
Key functions of a rail joint include:
- Connecting Rails: Securely joining two rail sections to ensure a continuous track, including in turnouts.
- Allowing Expansion/Contraction: Providing space for the rail to expand and contract due to temperature changes.
- Maintaining Alignment: Keeping the rails at the same vertical and horizontal level, which reduces wheel impact, improving safety and reducing noise.
- Load Distribution: Transferring heavy vertical pressure from the wheels to the sleepers.
- Electrical Conductivity: Enabling the continuity of track circuits for signaling, particularly in insulated rail joints.
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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