Your Professional Automotive Spring Supplier
Zhuji Xuanyu Spring Co., Ltd. (formerly Zhuji Printing Machine Spring Factory) is a high-quality spring manufacturer with 28 years of professional experience, recognized as a pioneer and leader in China’s printing press and die-cutting machine industries. We are consistently dedicated to providing exceptional spring solutions for our clients.
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Progressive Motorcycle Fork SpringsMotorcycle front fork springs are a critical component of the suspension system, directly affecting ride comfort, handling stability, and overall safety.Our springs are manufactured from high-quality
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Fuel Injector SpringFuel injector springs are precision elastic components at the core of fuel injection systems. They are widely used in diesel engines, gasoline direct injection (GDI) systems, and high-pressure common
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Automotive Suspension SpringsXuanyu Springs provides professional customized solutions for automotive suspension springs.Our suspension springs are manufactured using high-performance materials and advanced processes, designed
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Passenger Car Suspension SpringsXuanyu Springs specializes in providing customized high-performance suspension spring solutions for passenger vehicles. Our products are specifically developed for sedans, SUVs, MPVs, and other
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Automotive Shock Absorber SpringsXuanyu Springs is a professional supplier of automotive shock absorber spring solutions. Our shock absorber springs are designed to work in conjunction with shock absorbers and are core components in
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Valve SpringsXuanyu Springs is a professional engine valve spring solutions partner. We focus on designing and manufacturing precision components that maintain extremely high reliability even under extreme
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Motorcycle Suspension SpringsXuanyu Springs is a professional provider of motorcycle suspension spring solutions. Our products are designed specifically for the unique dynamic characteristics of two-wheeled vehicles, serving as
Why choose us
Quality Control
We maintain a strict internal inspection process. Each batch of products undergoes multiple tests, including accuracy, pressure resistance, and service life. Key inspection data can be provided upon request.
Logistics Solutions
With extensive export experience, we can arrange sea freight or international express delivery (DHL, FedEx, etc.) and offer trade terms such as FOB Ningbo/Shanghai to ensure safe and efficient delivery.
Sales Market
We have established stable supply partnerships in Southeast Asia, Europe, North America, and the Middle East, and we have served customers from countries such as Germany, Japan, the United States, and India for many years.
Our Service
From order placement to shipment, we maintain close communication. You can track order progress at any time, and we can provide photos or videos of key production stages upon request, allowing you to monitor quality remotely.
Product Description
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Material |
Carbon steel, alloy steel, stainless steel, spring steel and bronze or as you request. |
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Surface treatment |
Zinc Plating, Chrome Plating, Nickel plating, Powder Coating, Polishing, or Customized. |
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Size |
All sizes are available depend on customers' request. |
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Color |
Black, Blue, Red, Yellow, etc. |
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Certificate |
ISO/TS16949 |
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Application |
All kinds of cars, machinery, home appliance, electronic products, electric appliance, stationery, computers, power switches, miniature switches, architecture, commodity and A/V equipment, hardware and plastic molds, sports equipment and gifts, and more. |
Compression: When the vehicle encounters a bump, the spring compresses, absorbing the impact and preventing it from transferring directly to the vehicle's chassis.
Energy Absorption: The spring stores the energy generated by the bump, cushioning the ride and maintaining tire contact with the road.
Rebound
After compression, the spring releases the stored energy, pushing the suspension back to its original position, which helps stabilize the vehicle.
Support and Load Distribution
The spring evenly distributes the vehicle's weight across all wheels, ensuring balanced handling and reducing uneven tire wear.
Interaction with Shock Absorbers
The spring works alongside shock absorbers, which control the speed of spring compression and rebound, providing a smooth ride and preventing excessive oscillations.
Materials Used in Automotive Springs
Springs must withstand high stress, temperature variations, and constant movement. Common materials include:
Stainless Steel Springs
Corrosion-resistant, ideal for long-term durability.
Alloy Steel Springs
Provide strength and resistance to fatigue.
Carbon Steel Springs
Affordable and widely used in mass production.

The materials used and the manufacturing process play a crucial role in the performance of a spring. They determine the spring’s strength, durability, and resistance to environmental conditions.
Different materials offer different properties. The choice of material depends on the application and the performance requirements of the spring.
The manufacturing process also affects the spring’s properties. It involves shaping the material into a spring, heat treating it to enhance its properties, and finishing it to improve its appearance and resistance to corrosion.
Common Materials Used in Spring Manufacturing
Steel is the most common material used in spring manufacturing. It offers a good balance of strength, durability, and cost.
Stainless steel is used when corrosion resistance is important. It is more expensive than regular steel, but it offers superior resistance to rust and corrosion.
The Spring Manufacturing Process
The spring manufacturing process starts with coiling. The material is wound around a mandrel to form the spring shape.
Next is heat treatment. This process enhances the material’s properties, making it more durable and resistant to deformation.
The final step is finishing. This can involve grinding the ends of the spring to make them flat, applying a coating to improve corrosion resistance, or painting the spring for aesthetic purposes.
All enquiries will be valued and replied with 24 hours.
We will give you any professional suggest, according to different market and products for new customers.
Our Inspect Department will test each batch to ensure high quality, with material test & performance test.
Quick & efficient delivery to guarantee your inventory.
Good package to protect the products.
Your any feedback will be highly appreciate to make sure we can do better and better.
Accept OEM & ODM, our strong design team support custom products according to customer's requirement.
Sample or small order is welcome.

Certificates


FAQ
As one of the most professional automotive spring manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale bulk customized automotive spring made in China here from our factory. Contact us for more details.
motorcycle shock spring, Valve Springs, Passenger Car Suspension Springs
