60Si2Mn & SUP9 Material Trailer Leaf Spring 90x11-10 with Fatigue Testing ≥180K Cycles for Semi Trailer

Leaf Spring 90×11-10 | For Heavy Duty Semi Trailer | Material 60Si2Mn & SUP9 | Fatigue Testing ≥180K Cycles

Heavy-duty leaf spring designed for semi-trailer applications, manufactured with premium 60Si2Mn and SUP9 materials and tested to withstand over 180,000 fatigue cycles.

• OEM quality control ensures long service life with complete manufacturing processes
• Fatigue testing exceeds international standards and customer requirements
• 50% tighter tolerance control on key dimensions compared to industry standards
• Engineering team with over 20 years of industry experience and problem-solving expertise
• Rapid complaint resolution with solutions provided within 3 days
• Full customization capabilities for any leaf spring type

Production capacity: 600 tons per 8-hour shift for standard leaf spring types.

• Single piece hardness: HB378-445 after heat treatment
• Surface free from overheating, overburning, cracking, folding, and bruising defects
• Stress shot peening treatment on each individual leaf spring
• Center bolt punching and riveting after assembly
• Bolt mechanical performance: Grade 8.8 per GB3098.1-2000
• Surface defects per GB5779.1-2000
• Bolt tolerance per GB3103.1-1982 Grade B
• Black paint coating per QC/T484-TQ9 or as requested
• Additional requirements per GB/19844-2005

• Receive specifications and provide competitive pricing
• Create official technical drawings for customer approval
• Begin manufacturing upon deposit or irrevocable L/C confirmation
• Provide regular production progress updates
• Arrange shipping and logistics as required

Our professional team handles all aspects, allowing customers to simply receive products at destination.