Oil Tempered Silicon Chromium Spring Steel Wire for Springs. High Fatigue Resistance: Oil quenched and tempered wire offers superior fatigue, elasticity, and heat resistance. Wide Calibre Range: Available in diameters from 0.5mm to 20.0mm for diverse spring applications. High Production Capacity: Monthly output of 3000 tons supported by 4 oil-tempering and 2 induction heating lines. Full Customization: Offers full customization from designs or samples, including flexible customization options. Global Certifications: Certified with ISO9001, ISO45001, ISO14001, and IATF16949 quality management systems. 100% Quality Inspection: Strict 100% visual and functional inspection for all finished products with traceability. Versatile Applications: Ideal for automotive valve, clutch, shock absorber, suspension, and electric tailgate springs. Free Sample Offer: Provides limited quantity free samples for quality evaluation before bulk orders.