Name: China Rail Fastening Rail SKL Clips Manufacturers Suppliers Factory - Customized Service - GNEE RAIL
Brand: GNEE
SKU: 282842747

Rail Fastening Rail SKL 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 SKL Clips

Model	Diameter	Material	Hardness	Clamping Force	Surface Treatment	Applicable Scenario & Environment	Gauge Adjustment	Fatigue Life (Min.)	Extreme Environment Adaptability	Compliance Stds
SKL 12-T	φ12mm	50CrVA	40–45 HRC	6–9 kN	Electro-galvanizing (≥25μm)	Urban Tram (Coastal, High Humidity)	±4mm	1.2×10⁶ Cycles	Humidity Resistance: ≤95% RH (1000h)	EN 13481-4, CJ/T 527
SKL 14-F	φ14mm	60Si2MnA	43–48 HRC	10–14 kN	Hot-dip galvanizing (≥85μm)	Regional Freight (Desert, Sandstorm)	-8～+4mm	2.0×10⁶ Cycles	Abrasion Resistance: ≥HB 200	EN 13481-3, GB/T 13489
SKL 15-HDM	φ16mm	55SiMnVB	45–50 HRC	18–25 kN	Dacromet (≥8μm) + Zinc Plating	Heavy-Haul Mining (High Dust, Vibration)	-10～+6mm	3.5×10⁶ Cycles	Impact Resistance: ≥150J (20℃)	AREMA 10, GB/T 13489
SKL 20-HS350	φ15mm	60Si2CrVA	46–52 HRC	15–20 kN	Dacromet + Sealant (≥10μm)	High-Speed Rail (≥350km/h, Low Temperature)	-6～+4mm	5.0×10⁶ Cycles	Low-Temp Toughness: ≥60J (-40℃)	TB/T 3395.3-2015, EN 13481-2

Full-Cycle Quality & Installation Checklist

Management Stage	Key Item	Test/Operation Method	Acceptance Criterion	Sampling/Execution Rule	Tool/Reference
Incoming Inspection	Material & Dimensional Precision	Handheld PMI + Digital Caliper (IT9 Grade)	C: 0.56–0.64% (60Si2MnA); Diameter Tolerance: IT9 (φ14mm: ±0.043mm)	3 pcs/batch; 10 pcs/batch	Portable PMI Analyzer; 0.001mm Caliper
Installation	Fastener Torque	Torque Wrench	Matching Bolt Torque: M10: 40–65N·m; M12: 60–80N·m	10 pcs/100m track	Adjustable Torque Wrench
In-Service Check	Clamping Force Decay	Dynamic Force Tester	Force Loss ≤8% After 5×10⁵ Service Cycles	2 pcs/km monthly	Dynamic Clamping Force Tester
Maintenance	Reusability Evaluation	Visual Inspection + Hardness Test	No cracks/deformation; Hardness Deviation ≤1 HRC; Coating Intact ≥90%	100% of Dismantled Clips	10× Magnifier; Portable Rockwell Tester
Disposal	Fatigue Failure Check	Impact Test + Crack Detection	Impact Energy ≥70J/cm²; No Internal Cracks (Ultrasonic Test)	5 pcs/end-of-life Batch	Charpy Impact Tester; Ultrasonic Flaw Detector

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Rail Fastening Rail SKL Clips

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