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Help CenterCoil Spring With Mill Test Report 1 Year Warranty 0.8-12mm Wire Diameter Customizable
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As a professional manufacturer with over 20 years of experience, Anping County Boli Hardware Wiremesh Products Factory is proud to offer our premium Coil Spring with Mill Test Report. Our coil springs are engineered to meet the highest standards of durability and performance, making them ideal for a wide range of industrial applications. Each spring is backed by a 1-year warranty and comes with a mill test report to ensure material quality and traceability. With customizable wire diameters from 0.8mm to 12mm, we provide tailored solutions for your specific requirements.
Our factory, established in 1998, has grown into a reliable supplier for global markets, including North America, South America, Europe, Asia, and Africa. We specialize in manufacturing high-quality wire mesh products and springs, with an annual export value of US$5-10 million. By combining advanced production equipment with strict quality control, we ensure that every coil spring meets rigorous performance standards.
Whether you need compression springs, extension springs, or torsion springs, our customizable options allow you to specify dimensions, materials, surface treatments, and end configurations. Our team of experts will work closely with you to design and produce the perfect spring for your application.
Product Features & Technical Specifications
- Wire Diameter Range: 0.8mm – 12mm, accommodating both light-duty and heavy-duty applications.
- Material Options: Carbon steel, stainless steel (304, 316), alloy steel, and other materials upon request.
- Surface Treatments: Zinc plating, phosphate coating, epoxy coating, powder coating, or as specified.
- Customizable Dimensions: Outer diameter, free length, total coils, and spring rate can be tailored to your exact specifications.
- End Configurations: Closed ends, open ends, ground ends, or custom shapes.
- Mill Test Report: Each batch is accompanied by a mill test certificate verifying material chemical composition and mechanical properties.
- 1-Year Warranty: Covers defects in material and workmanship under normal use conditions.
- Quality Control: 100% inspection for dimensional accuracy, load testing, and surface finish before shipment.
Typical Applications
- Automotive suspension systems, engine valves, and brake components.
- Industrial machinery, agricultural equipment, and construction tools.
- Electronic devices, medical instruments, and precision instruments.
- Furniture, hardware, and consumer products requiring reliable spring force.
Technical Parameters (Sample)
| Parameter | Available Range | Remarks |
|---|---|---|
| Wire Diameter | 0.8 – 12 mm | Customizable |
| Outer Diameter | 5 – 200 mm | Depends on design |
| Free Length | 10 – 500 mm | Customizable |
| Spring Rate | 0.5 – 500 N/mm | According to design |
| Material Tensile Strength | Up to 2000 MPa | Specified in mill report |
| Surface Finish | Zinc, phosphate, etc. | Customizable |
Why Choose Our Coil Spring?
- Customizable to Your Needs: From wire diameter to end configuration, we can adapt every aspect to match your application. Provide your design or specifications, and we will produce the exact spring you require.
- Mill Test Report Assurance: Every spring batch includes a detailed mill test report, ensuring you know the exact material composition and mechanical properties. This traceability is vital for quality-sensitive industries.
- 1-Year Warranty: We stand behind our products. If any defect arises from material or workmanship within one year, we will replace or repair the springs at no extra cost.
- Cost-Effective Production: As a direct manufacturer with decades of experience, we offer competitive pricing without compromising quality. Our production capacity allows us to handle both small and large orders efficiently.
- Global Shipping: We ship from main ports like Tianjin, Qingdao, and Shanghai, ensuring timely delivery to destinations worldwide.
Company Strength & Trust
Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer since 1998. With an annual export value of US$5-10 million, we have served clients in North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. Our factory is located in Hengshui, Hebei, China – a renowned hardware production hub. We have a dedicated team of engineers and workers who ensure that every product meets the highest quality standards. Our commitment to customer satisfaction is reflected in our flexible customization options, on-time delivery, and after-sales support.
By choosing our coil springs, you are partnering with a manufacturer that values reliability, transparency, and long-term relationships. We invite you to experience the peace of mind that comes with a product backed by a mill test report and a solid warranty.
Contact us today to discuss your specific requirements. Our team will provide a quick quotation, technical support, and samples if needed. Let us help you find the perfect coil spring solution for your project.
Frequently Asked Questions (FAQ)
-
Q: What is the minimum order quantity (MOQ) for coil springs?
A: Our MOQ is flexible. For standard sizes, we can start from 100 pieces. For custom designs, please contact us to discuss your needs. -
Q: Can you provide springs with a specific spring rate or load capacity?
A: Yes, we can design and manufacture springs to meet your exact load requirements. Provide your desired force, deflection, and dimensions, and we will calculate the optimal spring rate. -
Q: What materials are available besides carbon steel?
A: We offer stainless steel (304, 316), alloy steel (e.g., 65Mn, 60Si2Mn), and other materials based on your application. Each material comes with a mill test report. -
Q: How long does it take to produce a custom coil spring?
A: Typically, production takes 7-15 working days after design approval, depending on complexity and quantity. We can accommodate urgent orders with expedited service. -
Q: Is the mill test report included with every order?
A: Yes, a mill test report is provided for each batch, detailing chemical composition and mechanical properties. This is standard for all our coil springs. -
Q: What surface treatments do you offer for corrosion resistance?
A: We offer zinc plating, phosphate coating, epoxy coating, and powder coating. Other treatments are available upon request. Please specify your environmental requirements. -
Q: Do you offer samples before mass production?
A: Yes, we can produce samples for your approval. Sample cost is usually negotiable and can be deducted from the final order. -
Q: How do you ensure the quality of the springs?
A: We implement strict quality control at every stage – from raw material inspection (with mill reports) to dimensional checks, load testing, and surface finish inspection before shipment.
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