Steel Rails

Model (Weight/Meter)

Head Width

Web Thickness

Base Width

Overall Height

Rail Head Radius

Steel Grade

Applicable Axle Load

Standard Length (Single Piece)

Maintenance Cycle

Compliance Stds

30kg/m (Urban Tram)

51mm

9.0mm

100mm

107mm

12mm

U71Mn

≤16t

12m

8–10 Years

GB/T 2585-2007, EN 13674-1

50kg/m (Regional Rail)

65mm

15.5mm

132mm

152mm

14mm

U75V

≤22t

25m

12–15 Years

GB/T 2585-2007, UIC 860-4

60kg/m (HSR 350km/h)

73mm

16.5mm

150mm

176mm

16mm

U78CrV

≤25t

50m (Continuous Welding)

20–25 Years

GB/T 2585-2007, TB/T 3436

67.41kg/m (US Heavy-Haul)

74.6mm

17.5mm

152.4mm

185.7mm

18mm

1100A

≤35t

39ft (11.89m)

10–12 Years

AREMA 11, AAR M-101

37.46kg/m (UK Regional)

61.9mm

12.7mm

122.2mm

128.6mm

13mm

900A

≤20t

18m

9–11 Years

BS 11-1985, EN 13674-1

56.9kg/m (Australian Freight)

69.1mm

15.9mm

139.7mm

168.3mm

15mm

900A

≤28t

30m

13–16 Years

AREMA 11, AS 1085.14

Inspection Stage

Key Item

Test Method

Acceptance Criterion

Sampling/Execution Rule

Tool/Reference

Incoming Check

Dimension & Surface Quality

Digital Caliper + Visual Inspection

Overall Height Tolerance: ±0.3mm; No Surface Scratches >0.2mm Depth

3pcs/100m rail

0.01mm Digital Caliper; Surface Profiler

Mechanical Performance

Tensile & Bending Strength

Universal Testing Machine

Tensile Strength ≥95% of Min. Value; Bending Deflection ≤1.5mm (10kN Force)

1 sample/batch

1000kN Universal Testing Machine

Maintenance Check

Wear & Corrosion

Wear Gauge + Coating Tester

Rail Head Wear ≤3mm; Rust Area ≤5% of Surface

5 points/km monthly

Rail Wear Gauge; Magnetic Flux Leakage Tester

Replacement Evaluation

Fatigue Damage & Straightness

Fatigue Tester + Straightedge Gauge

No Fatigue Cracks; Straightness Deviation ≤0.5mm/m

10% of Aging Rail

Servo Fatigue Tester; 2m Straightedge