Railway Steel Fish Plate

Fishplates (rail joint splints) are commonly known as rail splints, also called fishplates, which play a connecting role at the rail joints. They are divided into light rails, heavy rails and crane rails. Fishplates are a type of fastener used to connect rails.

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Description

Technical Parameters

Functions of fishplates:

Category	Primary Function
Core Purpose	Connects rail ends to maintain track continuity
Load Transfer	Distributes wheel impact forces across joint to reduce rail end battering
Gauge Keeping	Maintains proper rail alignment and prevents lateral displacement
Thermal Expansion	Accommodates rail thermal movement through designed gap
Vibration Damping	Absorbs wheel-rail impact (though noisier than welds)

Railway Steel Fish Plate

Fishplate Types Comparison

Type	Design Features	Typical Applications	Pros & Cons
Standard Fishplate	Flat symmetrical design	Low-speed tracks, yard sidings	Low cost but requires frequent re-tightening
Insulated Fishplate	Nylon/Composite insulation layer	Electrified track circuits	Prevents signal leakage but reduced strength
Heavy-Duty Fishplate	Thicker profile (60Si2Mn alloy steel)	Heavy-haul lines, steep gradients	Enhanced fatigue resistance at higher cost
Glued Fishplate	Epoxy-bonded interface	Bridge approaches, transition zones	Superior vibration absorption; complex installation

Railway Steel Fish Plate

Fishplate Specifications

Model Type	Rail Type Applicable	Material	Length (mm)	Thickness (mm)	Bolt Holes
4-Hole Light	30-50 kg/m Light Rail	Q235 Mild Steel	600-800	20-25	4
6-Hole Standard	50-60 kg/m Conventional	55# Steel/Q345	820-1000	24-28	6
6-Hole Heavy Duty	60-75 kg/m Heavy Haul	60Si2Mn Alloy Steel	1000-1200	28-32	6
Insulated Type	60 kg/m Electrified	Fiberglass Composite	1000	30	6
Glued Joint	60 kg/m High-Speed	60Si2Mn+Epoxy	1200	32	6