4140 alloy steel rail wheels manufactured through precision forging with diameter range of 10-1450mm and tight 0.1mm tolerance. These heavy-duty wheels are engineered for demanding railway and industrial applications.

• Material Options: Cast steel, cast iron, carbon steel (C35, C45, C50, C55, C60, 65Mn, 4330), alloy steel (4140, 42CrMo, 40CrNiMo, 4340, 34CrNiMo6)
• Wheel Types: Single flange, double flange, hollow wheel sets, solid wheel sets
• Diameter Range: 10-1450mm (including standard sizes: 300mm, 350mm, 400mm, 450mm, 500mm, 900mm)
• Load Capacity: 1-300 tons (customizable)
• Tolerance: 0.1mm precision
• Heat Treatment: Normalizing, quenching & tempering, surface/rim quenching with depth 5-20mm

Comprehensive 22-step production process ensures superior quality:

• Steel melting and billet cutting
• Heating, phosphorus treatment, and stamping forming
• Rolling, bending punch, and hot stamping
• Laser measurement and heat treatment (hardening & tempering)
• Multiple testing stages including ultrasonic, magnetic particle, and hardness testing

Rigorous inspection protocols with advanced testing equipment:

Designed for various railway and industrial vehicles including trains, railcars, light rail, metro systems, freight cars, mining wagons, and road-rail dual-use vehicles (RRV).

Available in customized designs with diameter specifications from 10mm to 1450mm. Forging method adapts to quantity requirements: free forging for smaller batches, precision forging with molds for larger production runs.