Rail Clips Rail E Clips

Railway Clip is used to fasten the rails to the underlying base plate together with the concrete sleeper. A variety of different types of heavy-duty clips are used to fasten the rails to the underlying baseplate or Sleeper, one common being the E Clip, which is shaped like a stubby paperclip. Another one is the SKL Tension Clamp, which is also the most widely used type all over the world. Others like KPO Clamp and Nabla Clip, also used in different situations.

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Description

Technical Parameters

Railway E Clips - Specifications by International Standards

Standard	Model	Compatible Rail (kg/m)	Key Dimensions (mm)	Material	Surface Treatment	Theoretical Weight (g/pc)	Installation Torque (N·m)
GB/T 12611 (China)	E16	30–43	Height: 16; Width: 38; Leg Thickness: 5.2	60Si2MnA	Hot-dip galvanizing (≥80μm)	125	35–45
GB/T 12611 (China)	E20	50–60	Height: 20; Width: 42; Leg Thickness: 6.0	60Si2MnA	Hot-dip galvanizing (≥80μm)	180	45–55
UIC 864-3 (Int'l)	E18	43–50	Height: 18; Width: 40; Leg Thickness: 5.5	55SiMnMo	Dacromet coating (≥12μm)	150	40–50
UIC 864-3 (Int'l)	E22	60–75	Height: 22; Width: 45; Leg Thickness: 6.5	55SiMnMo	Dacromet coating (≥12μm)	210	50–60
AREMA (USA)	E15	25–30	Height: 15; Width: 36; Leg Thickness: 4.8	AISI 9260	Zinc-nickel plating (≥10μm)	110	30–40
BS EN 13146 (EU)	E24	75–100	Height: 24; Width: 48; Leg Thickness: 7.0	S600MC	Epoxy powder coating (≥60μm)	250	60–70

Railway E Clips - Performance Test & Failure Analysis

Performance Test Item	Test Standard	Requirement	Common Failure Phenomenon	Cause of Failure	Solution
Elasticity Test	ISO 7438	After 5000 load cycles (30–60N·m), permanent deformation ≤0.5mm	Excessive permanent deformation (>1mm)	1. Material hardness insufficient (≤HRC 40)2. Heat treatment process deviation	1. Replace with material of HRC 42–482. Re-calibrate heat treatment temperature (860–880℃)
Corrosion Resistance Test	ISO 9227 (Neutral Salt Spray)	≥500h, no red rust	Rust spots appear within 300h	1. Coating thickness below standard2. Coating scratches during transportation	1. Check coating thickness before installation (meet Table 1 requirements)2. Use protective packaging during transportation
Shear Strength Test	GB/T 16939	Shear force ≥20kN	Shear fracture during test	1. Leg thickness smaller than standard2. Material inclusion defects	1. Strictly inspect dimension (leg thickness tolerance ±0.2mm)2. Use ultrasonic testing to screen for material defects
Fatigue Life Test	UIC 515-4	≥10⁶ load cycles, no crack	Crack at leg root within 5×10⁵ cycles	1. Stress concentration at leg root (fillet radius <1mm)2. Surface roughness too high (Ra >6.3μm)	1. Optimize fillet radius to 1.2–1.5mm2. Improve surface finish (Ra ≤3.2μm)

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Rail Clips Rail E Clips

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