Home > FAQs

FAQs and Service

Our worry-free service supports your Custom Spring Projects.

Frequently Asked Questions

Find out if you have questions about springs, orders and our company.

  • 1. What types of springs does XULONG SPRING primarily manufacture?
    XULONG SPRING specializes in the production of all types of customized springs including compression springs,torsion springs,tension springs etc with a focus on high-quality products for various applications and overhead door spring is a field we have been digging for decades.
    Just please send us your drawings or samples, we will meet your unique requirements.
  • 2. What are the key features of XULONG SPRING's spring products?
    Our springs are known for their high strength, durability, and stability, catering to the diverse needs of industries such as rolling doors and garage doors.
    Our springs have a wide coverage, with spring wire diameters ranging from 0.1mm to 60mm, they are used in almost every industry.
    Additionally, we boast a high production capacity, averaging over 600 tons of springs manufactured every month. During peak periods, we have achieved shipping up to 11 40-foot containers in a single week.
  • 3. What materials are commonly used in XULONG SPRING's spring manufacturing?
    Our spring materials offer a diverse selection, including stainless steel, alloy steel, and spring steel. We tailor our material recommendations based on the specific usage environment and requirements of our customers’ springs.
    For overhead door springs, we recommend the use of oil-quenched material, enhancing the safety, stability, and longevity of the overhead door operation.
  • 4. Are XULONG SPRING's springs suitable for both residential and industrial applications?
    Absolutely, all of our springs are customized springs which are made to meet customers’ requirements, for overhead door springs, they are usually used in residential,commercial and industrial applications.
  • 5. Can XULONG SPRING accommodate rush orders or urgent delivery requests?
    Yes,we understand the importance of timely delivery, in fact, we view quality,price and timely delivery as our core competitive strengths and we are committed to continually pursue and strengthen them.
    Especially for overhead door springs, if necessary we can get a 40-foot container of springs ready within 3 days thanks to our well-established processes and skilled workforce.
  • 6. What's the min order quantity?
    Our MOQ is 1 piece and you are welcome to contact us for your unique springs.
  • 7. Have XULONG SPRING got any certifications?
    Yes,We have always regarded quality as the lifeblood of our business, consistently optimizing and enhancing our quality management. We achieved certification under the ISO 9001:2008 quality management system in 2005 and IATF 16949:2016 in 2018, reflecting our commitment to maintaining the highest standards.
  • 8. Can I visit your factory to see the manufacturing process firsthand?
    Sure, all customers are welcome to tour our factory at any time, just please contact us in advance.Not only can you observe our spring manufacturing processes, but you can also explore our raw material inventory and spring quality inspection procedures.

Don’t find the answer?

If you have other questions, you can leave us a message directly, we will reply as soon as possible, thank you!

Get my answer Now

Worry-free Service

Whatever your requirements, XULONG SPRING strives to meet all your expectations for springs with excellent service and quality. Feel free to contact us anytime; we look forward to providing you with a customized and global service experience.

FACTORY BUILT-IN QUALITY CONTROL

XULONG SPRING is equipped with a comprehensive range of spring quality inspection equipment, including force testers, metallographic analyzers, hardness testers, fatigue testing machines, and more. Our team includes experienced employees with 20 years in the spring industry, ensuring that the quality inspection processes are meticulously executed in accordance with management system requirements. This commitment guarantees that every spring leaving our factory meets high quality standards.

CUSTOM ORDER

At XULONG SPRING, we are committed to providing personalized services, offering the flexibility to customize various springs according to our customers’ specific requirements. Whether it’s special specifications, unique shapes, or specific materials, we can meet your custom order needs. Our professional team ensures that the custom springs perfectly match your project, providing you with unique solutions.

HEAT TREATMENT

To ensure the optimum quality of our springs, all heat treatment processes at XULONG SPRING are conducted in-house. With advanced heat treatment equipment and a skilled technical team, we precisely control temperature and processing time to enhance the strength, toughness, and durability of the springs. Through internalized heat treatment processes, we provide consistent and outstanding quality for our customers.

SURFACE TREATMENT

XULONG SPRING offers a variety of surface treatment options to meet customers’ diverse requirements for the appearance and corrosion resistance of springs. Whether it’s galvanization, coating, or other customized surface treatments, we can provide high-quality treatment services. Our goal is to ensure that each spring has an excellent appearance and long-lasting surface protection.

RAW MATERIAL

The selection of raw materials at XULONG SPRING is considered a crucial step in ensuring spring quality. We use high-quality materials, including alloy steel, carbon steel, stainless steel, and various specifications and grades of spring steel. Through carefully selected raw materials, we ensure that every spring produced exhibits excellent performance and reliability.

PACKAGE

Understanding the diverse packaging needs of our customers, we provide flexible packaging services. Whether it’s boxed, bagged, or custom packaging, we can meet your requirements. We are dedicated to ensuring that every spring remains intact during transportation, offering customers safe and reliable packaging solutions.

Explore Hot Sale Spring Categories!

Check out our quality products, find out why 100+ clients work with us.

Send Inquiry Now

All Inquiries Will Be Replied Within 12 Hours!
*We Guarantee Your Privacy is 100% Secure！