We Are Experienced And Expert Leaf Spring Manufacturer
Specializing in Premium Leaf Springs since 1984
Welcome To DTLeafSpring
We Provide Best Industrial Service For Your Business
Provide customers high-quality and stable products, always value customers’ needs in terms of quality, cost, and delivery.
- Quality Control System
- 100% Satisfaction Guarantee
- Highly Professional Staff
- Professional and Qualified
- Environmental Sensitivity
- Personalised solutions
Four decades of proven reliability
Why choose us?
OE-Grade Leaf Springs with Industry-Leading 3yr/100kkm Warranty
Trusted Tier-1 partner for 15+ major OEMs
Over 2,000 products design and manufacturing experiences
Stage-Gated Development Protocol
Implemented a structured supplier integration protocol embedded within the APQP framework. This leverages joint FMEA workshops, co-development of critical performance parameters (e.g., material specs, fatigue life targets), and real-time digital thread connectivity for seamless data exchange (CAD, test results, quality metrics).
APQP Management
Established a standardized APQP (Advanced Product Quality Planning) management process, which runs through all project development, to ensures standardization, effectiveness, professionalism, and reliability of the development
FEMA Management
Continuous FMEA library management with knowledge-based repositories, leveraging accumulated domain-specific suspension expertise to proactively mitigate design risks and elevate development success rates through statistically validated patterns.
Supply Management
Established a proactive supplier collaboration framework. Through joint development of critical performance parameters (e.g., material specs, fatigue life targets), shared digital platforms for real-time data visibility (CAD, quality metrics).
We producE ALL KIND OF
LEAF SRPING
Heavy Truck & Trail Leaf Spring
Medium & Small Trucks Leaf Spring
Van & Pickup Leaf Spring
Double Leaf Spring
Single Leaf Spring
Z Leaf Spring
Our Process
How We Works
Precision-driven process from drawings to delivery for OE-grade leaf springs.
Exploration
Send your specifications and technical drawings
Development
Tailored R&D followed by comprehensive verification
Production
Precision manufacturing with rigorous compliance
Request Your Custom Leaf Spring Solution
DT LeafSpring
- No.20 HuangZhuang Street, Zhongxiang -431900
- +86 724 426 3672
- contact@dt-leafspring.com
FAQ
Why do leaf springs fail
Common causes include:
Fatigue from cyclic loading.
Corrosion (rust weakens steel).
Overloading beyond design capacity.
Worn bushings causing uneven stress.
Impact damage (e.g., potholes, curbs).
What is the important factor in spring steel?
If the steel material contains impurities such as Phosphorus or Sulphur or non-metallic items like brick particles, it means bad quality. Material which has not been properly tempered is also low quality. It is like sword steel which has not been properly forged by hammer. NSK uses only high quality materials which have been fully tempered.
What other points are important regarding the material?
Material with scratched surface or which has been exposed to high temperature for too long during the manufacturing process causing Carbon loss at the surface (decarbonization) also means low quality. Material which has been over-decarbonized will not harden when quenched and so cannot be made into high quality spring. NSK materials are visually inspected at every step of the production process to maintain high quality.
What causes "spring squeak"?
Friction between leaves due to:
Lack of lubrication.
Damaged/contaminated slipper pads.
Corrosion buildup.
Should the whole assembly be replaced in case of leaf springs?
Yes. Leaf springs last longer when whole assembly is replaced. Of course, when considering the cost you may want to replace only one leaf, but even in such case we recommend to replace at least three leaves, the one broken and those above and below it. The reason is these leaves may be scratched when the leaf between them is broken, which makes them weaker and prone to damage. Scratches increase surface fatigue considerably, so although assembly replacement may seem expensive, in the long run the total cost may not be so much.
What is "spring sag"?
When leaf springs permanently deform, reducing ride height and load capacity. Caused by overloading, aging, or material fatigue.
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