Crane rail joint bar specification

A rail fish plate is a mechanical coupling device that allows separate rail lengths to behave as a continuous structural member by transmitting loads through bolted steel interfaces rather than rail-end contact alone. GNEE RAIL manufactures fish plates for GB rail standards, UIC rails, JIS profiles, AS1085 rails, BS11 sections, AREMA/ASCE systems, and crane rails including DIN536 A55–A120 and QU70–QU120, with installation guidance support.

What is a Crane rail joint bar?

A crane rail joint bar (also known as a fishplate or splice bar) is a specialized steel connector designed to join two crane rail ends together, ensuring continuity, alignment, and stability of the runway. They are vital for reducing wheel impact, enhancing structural strength, and providing a smooth, safe track for crane wheels, often used for heavy-duty crane rails like QU70, QU80, QU100, and QU120.

Available type of crane rail joint bar:

• QU standard crane rails: QU70/QU80/QU100/QU120.

• GOST standard: KP70/KP80/KP100/KP120.

Crane rail joint bar specification

105# Crane Rail Bar

104# Crane Rail Bar

135# Crane Rail Bar

175# Crane Rail Bar

135# & 171# Crane Rail Bar

Why use a rail fish plate?

Rail fish plates (or splice bars) are essential components in railway infrastructure used to join two rail ends together securely. They maintain structural integrity, ensuring proper horizontal and vertical alignment while allowing for thermal expansion and contraction, which prevents track deformation, improves safety, and reduces maintenance costs.

Key Reasons for Using Rail Fish Plates:

• Structural Continuity: Fish plates maintain a smooth, continuous, and level path for trains to travel, preventing gaps or misalignment at joints.

• Load Transfer & Support: They bridge the gap between rails, transferring the heavy loads of passing wheels from one rail to the next, which reduces stress on the track substructure.

• Expansion & Contraction Management: They are designed to allow for the expansion and contraction of steel rails due to temperature changes without breaking the joint's integrity.

• Enhanced Safety & Stability: By providing a strong, rigid connection, they prevent rail separation and significantly reduce the risk of derailments.

• Versatility & Repair: They are essential for both permanent track construction and temporary repairs, offering a quick way to restore track continuity.

• Electrical Insulation: In specialized scenarios (insulated fish plates), they are used to separate track circuits, ensuring proper operation of signaling systems.

Fish plates are generally bolted to the rail webs to provide a durable connection capable of withstanding high-stress environments.

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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