Steel Rail SKL Clips

Steel 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 Performance Grading & Scene Adaptation

Performance Grade Model Wire Diameter Material Key Performance Index Typical Application Scene
Economy SKL 12 φ13mm 38Si7 Hardness: 40–45 HRC; Fatigue Life: ≥2.0×10⁶ cycles Factory/Port Light Rail
Standard  SKL 1 / SKL 3 φ13mm 60Si2CrA Hardness: 42–47 HRC; Fatigue Life: ≥3.0×10⁶ cycles Regional Mainline Railway
Heavy-Duty  SKL 14 φ13mm 60Si2CrA Hardness: 42–47 HRC; Clamping Force: 9–11 kN Freight Mainline
High-Strength SKL B 15 φ15mm 55SiMnVB Hardness: 44–49 HRC; Fatigue Life: ≥4.5×10⁶ cycles Heavy-Haul Railway

Steel Rail SKL Clips

Railway SKL Clips Full-Lifecycle Quality Inspection Requirements

Inspection Stage Inspection Item Test Method Acceptance Criterion
Incoming Material Chemical Composition Handheld XRF Analyzer C: 0.55–0.65% (60Si2CrA); Si: 1.50–1.80%
Production Process Hardness & Straightness Rockwell Hardness Tester; Straightness Gauge Hardness: ±1 HRC tolerance; Straightness: ≤0.1mm/m
Finished Product Clamping Force & Coating Thickness Clamping Force Tester; Magnetic Thickness Gauge Clamping Force: ±5% tolerance; Coating (Hot-dip galvanizing): ≥75μm
In-Service Maintenance Fatigue Crack & Corrosion Ultrasonic Flaw Detector; Visual Inspection No cracks ≥0.2mm; No red rust on coating

 

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Steel Rail SKL ClipsSteel Rail SKL Clips

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