
Heavy-Duty Steel Leaf Springs for Trucks and Trailers Durable Suspension Parts. Superior Corrosion Resistance: Electrophoretic painting offers salt spray testing >500 hours, far exceeding the 200-hour industrial standard. Extended Fatigue Life: Pre shot-peening process ensures 160,000 fatigue cycles, beating the general 150,000 cycle level. Customized OEM Service: Full customization available for size, bushing, color, and logo based on customer drawings. High-Strength Materials: Constructed from premium materials including 60Si2Mn, 55CrMn, 50CrVA, and SUP9 series. International Quality Certification: Certified to ISO 9001 and IATF 16949 standards with rigorous quality control from raw material to finish. Fast Delivery Time: Standard delivery within 7-15 working days from Qingdao Port. Flexible Color Options: Available in red, shinning black, dark black, grey, blue, or custom colors as required.