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Custom Railway Wheels Special Bore Keyway Machining ER8 ER9 Material OEM Service. High Fatigue Resistance: Forged from LG61/B6E alloy steel, suitable for 200km/h operation. Full Traceability: Heat number stamped with MTC EN 10204 3.1 available for each wheel. Customizable Sizes: Wheel diameter 600-1376 mm or actual range; hardness Hb 260-340 or actual values. Low Noise Design: Optimized for metro and LRV resilient wheel applications with smooth operation. Comprehensive Quality Control: 100% Ultrasonic Testing, Magnetic Particle Testing, and mechanical strength tests. Global Compliance: Meets EN13262, AAR M-107, UIC810-1, and ISO 9001 standards.