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Help CenterRectangular Spring, 1 Year Warranty, Free Technical Support, Mill Test Report Included, 304 Stainless
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With over 20 years of manufacturing expertise, Anping County Boli Hardware Wiremesh Products Factory (established 1998) proudly presents our premium Rectangular Spring made from high-grade 304 stainless steel. As a trusted manufacturer exporting US$5 million to US$10 million annually to markets worldwide, we combine precision engineering with rigorous quality control to deliver springs that meet diverse industrial demands. Each rectangular spring comes with a 1-year warranty, free technical support, and an included Mill Test Report – ensuring you receive a reliable, traceable product backed by decades of experience.
Our rectangular springs are designed to provide consistent force and deflection in applications where space is limited or where a non-circular cross-section is required. The 304 stainless steel material offers excellent corrosion resistance, durability, and performance in both high and low temperature environments. Whether you need standard sizes or custom configurations, our engineering team is ready to assist with free technical support throughout your project.
Key Features & Technical Specifications
- Material: 304 Stainless Steel (sus304) – excellent corrosion resistance, high tensile strength, and good formability.
- Shape: Rectangular cross-section – ideal for applications requiring higher load capacity in compact spaces compared to round wire springs.
- Customizable Dimensions: Wire diameter from 0.5mm to 20mm, outer length/width/height tailored to your specifications.
- End Types: Available options include closed, open, and ground ends – please specify your requirement.
- Surface Treatment: Plain (as-rolled), polished, or passivated to enhance corrosion resistance upon request.
- Mill Test Report: Each order includes a certified report documenting chemical composition and mechanical properties for full traceability.
- Warranty: 1-year warranty against manufacturing defects – demonstrating our commitment to quality.
- Free Technical Support: Our experienced engineers provide guidance on spring design, selection, and application to ensure optimal performance.
Typical Parameters (Customizable Range)
| Parameter | Available Range |
|---|---|
| Wire Diameter (d) | 0.5 mm – 20 mm |
| Outer Length (L) | 10 mm – 500 mm |
| Outer Width (W) | 10 mm – 300 mm |
| Free Height (H) | 5 mm – 200 mm |
| Number of Active Coils | 3 – 20 |
| Load Capacity | Customizable based on dimensions |
Advantages for Your Business
- Reliable Material: 304 stainless steel ensures long service life even in humid or corrosive environments, reducing replacement frequency.
- Precision Manufacturing: Our advanced CNC spring coiling machines produce consistent, tight-tolerance springs batch after batch.
- Cost-Effective: As a direct manufacturer with 20+ years of experience, we offer competitive prices without compromising quality.
- Full Traceability: Mill Test Reports provide confidence in material composition and mechanical performance.
- Global Shipping: We ship from Tianjin, Qingdao, and Shanghai ports to major markets across North America, South America, Europe, Asia, Africa, and Oceania.
Our rectangular springs are widely used in automotive suspensions, industrial machinery, electronic components, agricultural equipment, and many other applications where a compact, high-force spring is needed. The free technical support team can help you select the optimal spring rate, stress level, and end configuration for your specific use case.
Trust & Assurance
Anping County Boli Hardware Wiremesh Products Factory has been a reliable manufacturer since 1998. With an annual export value between US$5 million and US$10 million, we serve clients in over 15 countries and regions. Our products are manufactured under strict quality control procedures, and each order is backed by a 1-year warranty and free technical support. We are committed to providing you with a seamless experience from inquiry to delivery. Contact us today to discuss your rectangular spring requirements – we offer custom solutions without minimum order quantity restrictions for many sizes.
Frequently Asked Questions
Q1: What is the difference between a rectangular spring and a round wire spring?
A: Rectangular springs have a square or rectangular cross-section, which allows them to carry higher loads in a smaller space compared to round wire springs of the same outer dimensions. They are often used in applications where space is constrained or where a more uniform stress distribution is needed.
Q2: Can you provide a Mill Test Report for the 304 stainless steel?
A: Yes, a Mill Test Report is included with every order. It details the chemical composition and mechanical properties of the material, ensuring full traceability and quality assurance.
Q3: Do you offer free technical support for custom spring design?
A: Absolutely. Our engineering team provides free technical support to help you design the ideal spring for your application. We can assist with dimension calculation, load requirements, and end type selection.
Q4: What is the typical lead time for custom rectangular springs?
A: Lead time depends on complexity and quantity. For standard sizes, we can ship within 7–15 days. Custom orders typically require 15–30 days. Please contact us with your specific requirements for an accurate estimate.
Q5: What surface treatment options are available?
A: We offer plain (as-rolled), polished, and passivated finishes. Passivation enhances corrosion resistance further. Please specify your preference when ordering.
Q6: What is the warranty coverage?
A: We provide a 1-year warranty against manufacturing defects. This includes material flaws, dimensional inaccuracies, or premature failure under normal use. The warranty does not cover damage due to misuse or improper installation.
Q7: Can you ship to my country?
A: We export to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Shipping is arranged from Tianjin, Qingdao, or Shanghai ports. We can quote FOB, CIF, or other terms as needed.
Q8: Is there a minimum order quantity?
A: For many standard sizes, we accept small quantities. For custom sizes, we typically have a minimum order quantity depending on complexity. Please consult our sales team for details.
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