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High-Strength Coil Springs Suppliers

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  • Automobile Suspension Spring
    1. Our automotive suspension springs are made with advanced manufacturing technology and are precisely designed to ensure smooth driving and handling of the vehicle under various road conditions. They provide support in shock absorption, load bearing, and stability, and enhance the comfort and safet...
  • Modified Car Suspension Spring
    1. Advantages of off-road vehicle modified suspension springsHigh-strength load-bearing capacity: Our off-road vehicle suspension springs are designed to withstand high loads, impacts, and stresses in terrains, ensuring performance on mountain roads, deserts, and muddy and uneven roads.Enhanced dura...
  • Brake Spring
    1. Brake springs play an important role in ensuring the stability of the brake chamber and brake system.Precision manufacturing and high performance: Our brake springs are made of high-quality alloy steel, and through special heat treatment and fine processing, ensure that the springs have high comp...
Zhejiang Zongheng Spring Co., Ltd.

About Us

Zhejiang Zongheng Spring Co., Ltd. is China High-Strength Coil Springs Suppliers and High-Strength Coil Springs Company, was established in 2021 and is a production-oriented enterprise specializing in the design and manufacture of brake system springs, suspension system springs, and general spiral springs. The company is located in Fengqiao, Zhuji, Zhejiang, covering an area of 30,000 square meters. The company uses high-quality raw materials from domestic and foreign sources and has advanced heat treatment, coiling, shot blasting, shaping, and surface treatment equipment. The production process is implemented according to the IATF/TS16949 international quality management system, and the company is committed to implementing 6S management and digital production processes to provide quality and reasonably priced products and services to domestic and foreign markets. The company is constantly researching and surpassing in the direction of high strength, lightweight, and high fatigue life. The company has a complete laboratory and has introduced advanced testing equipment such as spectrometers, online flaw detectors, image analyzers, tensile testing machines, fatigue testing machines, multi-functional sand and stone impact testers, lateral force load testers, etc., allowing customers to understand the product characteristics of each batch. We adhere to the quality policy of "precision in work and integrity in the product", inherit the "craftsman spirit" and strive to make every spring well. We look forward to exchanging and cooperating with customers at home and abroad for mutual development.

Certificate

  • IATF 16949:2016
    IATF 16949:2016

Latest News

  • Knowledge 2025-07-24

    The humble suspension spring is a fundamental, yet often overlooked, component within a vehicle's suspension system. Far more than just a piece of coiled metal, it plays a vital role in ensuring safety, comfort, and cont...

    Read More
  • Knowledge 2025-07-18

    The quest for a smoother, more comfortable ride is a common priority for many drivers. Naturally, attention often turns to key suspension components like the springs. But do suspension springs directly hold the key to en...

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  • Knowledge 2025-07-11

    Car suspension springs are the unsung heroes of your vehicle, quietly absorbing bumps and ensuring a smooth, stable ride. But over time, these critical components can wear out, leading to costly repairs and safety risks....

    Read More

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High-Strength Coil Springs Industry knowledge

How does the thickness of High-Strength Coil Springs affect the performance of the vehicle suspension system?

In recent years, with the rapid development of the automobile industry, the performance optimization of the vehicle suspension system has become one of the key factors to improve the driving experience and vehicle safety. As one of the core components of the suspension system, the thickness of High-Strength Coil Springs directly affects the handling, comfort and durability of the vehicle.

1. Basic characteristics of high-strength coil springs
High-strength coil springs are usually made of high-quality spring steel, with high strength, high fatigue life and good corrosion resistance. These springs are manufactured through precision machining processes and can withstand complex load changes, thereby ensuring the stability and comfort of the vehicle under various driving conditions. In addition, the thickness (i.e. diameter) of the spring is an important part of its design parameters, which directly affects the stiffness and elasticity of the spring.

2. The influence of spring thickness on the performance of the suspension system
Stiffness and handling
The thickness of the spring determines its stiffness level. Thicker springs have higher stiffness and can provide stronger support, thereby improving the handling of the vehicle. For example, in racing cars or high-performance vehicles, the use of high-strength, high-rigidity coil springs can significantly improve the vehicle's steering response and stability. However, excessive stiffness may also lead to a decrease in ride comfort, so it is necessary to design it reasonably according to the purpose of the vehicle.
Comfort and shock absorption effect
One of the main functions of the vehicle suspension system is to absorb road shock and reduce vibration transmission to the vehicle. Although thinner springs have lower stiffness, they can provide a softer shock absorption effect, thereby improving ride comfort. For example, some luxury models use thinner coil springs to optimize the ride experience.
Durability and fatigue life
The thickness of the spring is also closely related to its fatigue life. High-strength coil springs are usually made of special alloy materials and undergo heat treatment and surface treatment processes to improve their fatigue resistance and durability. Thicker springs may be more prone to fatigue cracks due to greater stress concentration, while thinner springs can extend their service life through optimized design.
Weight and lightweight trend
With the trend of the automotive industry towards lightweight development, the design of high-strength coil springs is also being optimized. Thinner springs help reduce the weight of the vehicle, thereby improving fuel efficiency and power performance. However, too thin springs may sacrifice certain strength and stiffness, so it is necessary to find a balance between lightweight and performance.

Zhejiang Zongheng Spring Co., Ltd. is a leading company specializing in the research and development and production of high-strength coil springs. The company adopts advanced heat treatment and surface treatment technologies and follows the IATF/TS16949 international quality management system to provide customers with high-strength, lightweight and long-life coil spring products. By continuously optimizing the spring thickness design, the company has successfully developed high-performance suspension system components suitable for a variety of models, meeting the market demand for high-quality automotive parts.

The thickness of high-strength coil springs is an important factor affecting the performance of the vehicle suspension system. Thicker springs are suitable for high-performance vehicles, providing higher stiffness and handling; while thinner springs are more suitable for luxury models that focus on comfort. In the future, with the advancement of material science and manufacturing processes, the design of high-strength coil springs will be more diversified to adapt to different models and driving needs. At the same time, the trend of lightweight and high durability will also drive the industry towards higher performance and more environmentally friendly directions.