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Audited Supplier Audited by an independent third-party inspection agency
Our company specializes in manufacturing various types of Leaf Springs for commercial vehicles, passenger cars, and trailers. With over more years of experience in the automotive suspension industry, we provide durable, high-load-bearing solutions that ensure vehicle stability and riding comfort.Key Features / Advantages:
| Parameter | Details |
|---|---|
| Material | 60Si2Mn / 50CrVA / SUP9 |
| Surface Treatment | Painted (Black) / Zinc Plated / Phosphating |
| Type | Multi-Leaf / Mono-Leaf / Parabolic |
| Application | Truck / Trailer / Bus / Agricultural Vehicle |
| Length | Customized (500mm - 2000mm) |
| Width | 70mm / 75mm / 90mm / 100mm etc. |
| Thickness | 8mm - 30mm |
Vehicle Applications:
Shearing & Punching: Steel bars are precisely cut and punched to form the initial shape of the leaf.
Heat Treatment (Quenching & Tempering): Leaves are heated to austenitizing temperature and rapidly quenched in oil, followed by high-temperature tempering. This critical process enhances the spring's tensile strength and resilience. We utilize fully automated CNC heat treatment lines to ensure temperature uniformity.
Shot Peening: The surface of the spring is bombarded with small steel shots. This process induces compressive residual stress, significantly reducing the risk of crack formation and extending fatigue life by up to 300%.
Scragging (Pre-setting): Springs are compressed to the solid height to set them permanently. This prevents settling during actual vehicle use.
Assembly: Leaves are assembled with center bolts, clips (rebound clips), and bushings. The clips are tightly clinched to prevent leaf separation.
Our Services:
OEM/ODM Welcome: We accept customized orders based on your drawings or samples.
Small Order Acceptable: We support small trial orders to test the market.
Factory Direct: Competitive price with the best quality control.
Packaging: Steel strip bundling + Wooden pallet / Seaworthy wooden case packaging (to protect edges and prevent rust during long sea voyages).
Delivery: Usually within 20-30 days after receiving the deposit. Samples are available for quality test.
Q1: How do I know which leaf spring fits my truck?
A: The best way is to check the part number on your existing spring. Alternatively, you can provide us with your vehicle's make, model, year, and axle load. We can cross-reference this in our database.
Q2: What is the difference between "Multi-leaf" and "Parabolic" springs?
A: Multi-leaf springs have more inter-leaf friction, which provides damping but can be stiffer. Parabolic springs have fewer leaves, are lighter, and offer a better ride quality due to reduced friction. Parabolic springs are often chosen for long-haul drivers seeking comfort.
Q3: What is the average lifespan of your leaf springs?
A: Under normal highway conditions and proper load distribution, our springs typically last 3-5 years or more. The shot peening process we use greatly enhances the fatigue life compared to standard untreated springs.
Q4: Do you offer the rubber bushings and U-bolts as a kit?
A: Yes, we can supply complete suspension kits including leaf springs, U-bolts, center bolts, and bushings. This ensures all components are matched for optimal performance and safety.
Q5: Can you provide a Certificate of Origin?
A: Yes, we can provide both C/O and Form A or Form F for preferential tariff treatment based on your import country's requirements.
Q6. Are you a factory or a trader?
A: We have our own factory and an international trading company.
Q7. Do you support product customization?
A: Yes, we mainly customize processing (process customization, material customization, surface treatment customization, etc.). According to your samples or drawings to make samples!
Q8. What is the payment method?
A: We accept TT (Bank Transfer), Western Union, and L/C.
For a total amount under US$500, 100% in advance.
For total amounts above US$500, 30% in advance, the rest before shipment.
Q9. What is your MOQ?
A: MOQ depends on our client's needs; besides, we welcome a trial order before mass production.
Q10. What is the production cycle?
A: It varies a lot depending on product dimension, technical requirements, and quantity. Generally, it takes about 30 days. We always try to meet customers' requirements by adjusting our workshop schedule.
Q11. Is it possible to know how my product is doing without visiting your company?
A: We will offer a detailed product schedule and send weekly reports with digital pictures and videos that show the machining progress
Q12. How do you control and ensure product quality?
A: We will prevent beforehand, manage during the event, and guarantee after the event. Confirm with you every detail before quoting. After you order, we will reconfirm all the details. So we can reduce the losses of time and costs.
Q13. If you make poor-quality goods, will you refund our funds? A: We make products according to drawings or samples strictly until they reach your 100% satisfaction. And actually, we won't take a chance on doing poor-quality products. We are proud of keeping the spirit of good quality.
Q14. How can I receive a quotation?
A: Please send us your product drawings or picture information via email or message, and we will provide you with a product quotation within 2 working days!
Q15. How can I get samples?
A: 1) Standard products: We provide free samples under $5.
2) Custom products: We charge 1-3 times the unit price (based on product specifications)
Shipping methods are DHL, FedEx, TNT, UPS, EMS, or others. You need to pay for shipping. Samples will be sent as soon as payment is received!
Q16. How do I place an order?
A: Please try to provide the following information:
* Product information: specifications, quantity, expected price
* Delivery requirements
*Payment
* Shipping information: name, detailed shipping address, phone number, shipping requirements (courier, air or sea).
* If there is a cooperative freight forwarder, please provide the contact information of the freight forwarder.
* Please send us an official purchase order by email. Or we can provide proforma invoices for you.
Q17. How to send the product to me?
A: The transportation method is up to you. We can also recommend more economical transportation for you!
For small batches under 30kg, express delivery (DHL, FedEx, TNT, UPS, EMS, or others) is commonly used.
Orders of 30-500 kg can be airlifted to your designated airport.
For large quantities or large volumes, we often use sea freight.
Q18. Can you arrange the transportation of the goods for me?
A: Yes, we can send you by sea, air or courier.
If you are interested in our products, please send a message to us!
Quality First, Price Best, Service Foremost!
We assure you of our best services at all times!
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