The dimensions of railway fishplates vary depending on rail type, track classification, and design standards. Common fishplate sizes are determined by the cross-sectional specifications of the corresponding rails and applicable regulations. For instance, fishplates designed for standard U71Mn rails typically measure between 400mm to 600mm in length, with widths matching the rail web profile and thickness ranging from 25mm to 40mm. Critical dimensional parameters including length, width, height, and hole pitch (bolt hole spacing) must strictly comply with UIC, AREMA or national railway standards to ensure precise rail alignment and provide sufficient strength and stability.
Hole pitch dimensions are particularly crucial as bolt hole positioning directly affects connection integrity. Common designs feature three or four-hole patterns with hole diameters typically measuring 22mm or 24mm to accommodate various fish bolt specifications. Fishplate length and thickness must satisfy both train load requirements and track class specifications - insufficient thickness or length may compromise joint strength and increase track failure risks.
GNEE RAIL manufactures multiple fishplate specifications in strict accordance with international standards and custom requirements, guaranteeing dimensional precision and premium material quality for diverse applications including high-speed railways, heavy-haul lines, and urban transit systems. Beyond fishplates, GNEE RAIL supplies various specifications of light rails, heavy rails, crane rails, and comprehensive railway fasteners. For detailed product catalogs, please contact our technical team.
