Review common questions from buyers about capacity, testing, materials, custom manufacturing, and quotation support.
Are you a spring manufacturer?
Yes. QIFENG SPRING is a spring manufacturer focused on automotive and industrial spring products, including brush springs, flat springs, torsion springs, compression springs, and special-shaped wire forms.
What wire diameter can you produce?
The factory reports a manufacturing range of 0.15 mm to 5 mm depending on spring type, material, and forming requirements.
What materials do you use?
Common sources include Japanese music wire, Korean KOS and Manho steel wire, German Roslau wire, and Sinosteel high carbon steel wire, subject to the application specification.
Can you manufacture according to drawings?
Yes. The custom spring workflow supports drawings, reference samples, and application requirements for OEM or ODM projects.
What testing capabilities do you have?
Testing covers spring force, torque, hardness, tensile strength, fatigue strength, profile projection, and metallographic analysis.
What certifications do you have?
The company states ISO9001 certification and ongoing ISO/TS16949 system training and certification progress.
What is your annual production capacity?
The stated annual output is 300 million springs across multiple product teams and production lines.
How can I request a quote?
Use the inquiry form on the contact page, custom springs page, or any product detail page to send your drawing, quantity, and application details.