Jiangsu Sunzo: A leading provider of high-end customized disc springs, setting the industry standard for quality and service.

Jiangsu Sunzo: A leading provider of high-end customized disc springs, setting the industry standard for quality and service.

Since its establishment in 2006, Jiangsu Sunzo Spring Technology Co., Ltd. has specialized in the research and development of disc springs, evolving over the years into a leading manufacturer of this product line. With a main factory covering 100,000 square meters, the company has earned international recognition through rigorous management practices and superior quality, with its products expanding steadily in markets across Europe, North America, and Australia.

In modern industrial applications, disc springs serve as critical elastic components whose performance directly determines the operational stability and safety of numerous mechanical systems. When selecting a disc spring manufacturer, stringent quality control and prompt after-sales support are paramount considerations—areas where Jiangsu Sunzo stands out as an industry benchmark.

Our quality assurance system spans the entire product lifecycle, from rigorous raw material selection to comprehensive testing of final products, with every step designed for precision to ensure each disc spring meets stringent international standards. For raw materials, we meticulously select high-quality alloys including 65Mn, Inconel X-750, and 17-7PH stainless steel, achieving full traceability throughout the supply chain. Through spectral analysis and mechanical property tests—including tensile strength, yield strength, and hardness measurements conducted per ASTM E8 standards—we rigorously verify raw materials to guarantee product quality at source.

During production, we employ advanced CNC spring forming equipment and precision stamping machines to maintain dimensional tolerances within ±0.02 mm. Additionally, multiple quality control checkpoints are implemented throughout the process, including ultrasonic testing (per ASTM E164) and load-deformation curve analysis (per ISO 16148), effectively eliminating defective products and ensuring every item released to the market meets stringent quality standards.

Jiangsu Sunzo's disc springs deliver exceptional performance. Disc springs made of high-carbon steel exhibit a stiffness range of 8–45 N/mm and a fatigue life exceeding 10⁷ cycles, while those constructed from superalloys maintain stable performance under extreme temperature conditions (-270°C to 700°C). To ensure long-term reliability, our finished products undergo rigorous environmental testing—including salt spray tests (per ASTM B117) for corrosion resistance and thermal shock cycle tests for temperature stability verification.

Beyond delivering exceptional product quality, Jiangsu Sunzo provides customers with comprehensive, high-end customized solutions. Recognizing the diverse needs of our clients, we have established a robust customization service process. When you submit a customization request, our professional technical team conducts thorough discussions to gather detailed information about your application scenario, load requirements, space constraints, and other critical factors. Leveraging our strong technical expertise, we employ advanced methods such as finite element analysis to optimize product design and provide highly adaptable solutions.

For material selection, we offer not only standard high-quality alloy materials but also specialized options such as superalloys and corrosion-resistant stainless steel tailored to specific operational requirements. Our custom service supports small-batch orders, ensuring complete fulfillment of your unique needs.

Jiangsu Sunzo's after-sales service also meets industry standards. We offer a 24-hour technical support hotline, ensuring you receive prompt professional assistance whenever you encounter technical issues. For complex assembly tasks, our engineers provide on-site installation guidance to ensure proper installation and optimal performance. Additionally, we offer a 12-month warranty covering manufacturing defects, giving you peace of mind. We also provide preventive maintenance training to help customers master proper installation and inspection techniques, thereby extending the lifespan of springs.

Whether you require standard disc springs compliant with DIN 2093 or fully customized products with outer diameters ranging from 5 mm to 800 mm, Jiangsu Sunzo ensures seamless integration into your precision machinery through our unwavering commitment to quality and comprehensive customer support. Our ISO 9001:2015 and AS9100D certifications demonstrate our relentless pursuit of excellence, establishing us as a trusted partner for industries including aerospace, nuclear power, and medical device manufacturing.

Choosing Jiangsu Sunzo means opting for high-quality disc springs and professional customized solutions. Let us work together to ensure the optimal performance of your equipment.