Description
Technical Parameters
Technical Specification Comparison of Railway SKL Clip Models
| Parameter | SKL 12 (Light Rail) | SKL 14 (Standard Mainline) | SKL 15 (Heavy-Haul Railway) | SKL 20 (High-Speed Railway) |
|---|---|---|---|---|
| Model Designation | SKL 12 | SKL 14 | SKL 15 | SKL 20 |
| Applicable Rail Profile | 22–30kg/m Light Rail | 43–60kg/m UIC 54/UIC 60 Rail | 60–75kg/m Heavy-Haul Rail | 60kg/m High-Speed Rail (CRTS I/II) |
| Base Material | 50CrVA Spring Steel | 60Si2MnA Spring Steel | 55SiMnVB Alloy Steel | 60Si2CrVA High-Strength Steel |
| Clamping Performance | - Clamping Force: 6–9 kN- Max Elastic Deflection: 3.5 mm- Relaxation Rate (1000h): ≤3% | - Clamping Force: 10–14 kN- Max Elastic Deflection: 4.2 mm- Relaxation Rate (1000h): ≤2.5% | - Clamping Force: 18–25 kN- Max Elastic Deflection: 5.5 mm- Relaxation Rate (1000h): ≤2.5% | - Clamping Force: 15–20 kN- Max Elastic Deflection: 4.8 mm- Relaxation Rate (1000h): ≤2% |
| Typical Application | Urban Trams, Campus Light Rail | Regional Passenger/Freight Lines | Mining/Port Heavy-Haul Lines | High-Speed Railways (≥250 km/h) |
Factory Inspection Checklist for Universal Railway SKL Clips
| Inspection Category | Inspection Item | Inspection Method | Acceptance Criteria | Sampling Plan | Inspection Tool | Record Requirement |
|---|---|---|---|---|---|---|
| Material & Heat Treatment | Chemical Composition | Handheld Spectrometer (PMI) | C, Si, Mn, Cr, V content meet model-specific standards (e.g., 60Si2MnA for SKL 14) | 5 pcs/batch | PMI Analyzer | Record element values, attach report |
| Surface Quality | Coating Thickness | Coating Thickness Gauge | Thickness meets standard (e.g., ≥85μm for hot-dip galvanizing); 3 points/pc | 10 pcs/batch | Magnetic Thickness Gauge | Attach thickness test report |
| Surface Quality | Defects (Cracks/Burrs/Rust) | Visual Inspection + 10x Magnifier | No visible cracks/burrs; rust grade ≤ Grade A (GB/T 15519); no peeling coating | 100% inspection | 10x Magnifier, Rust Grade Chart | Mark defective parts with photos |
| Mechanical Performance | Clamping Force | Clamping Force Tester | Force within model's range (e.g., 10–14 kN for SKL 14); test 5 pcs/batch | 5 pcs/batch | Clamping Force Test Bench | Print force-time curve |
gnee-professional supplier
Hot Tags: track fastening system skl clips, China track fastening system skl clips manufacturers, suppliers, factory, rail clip installation tools, steel rail clips, rail clip thermal coating, rail clip loosening tools, rail clip insulating coating, rail clips
