Quality control starts with incoming inspection and extends through in-process verification, final inspection, and batch management.
Inspection logic
For B2B buyers, the key requirement is not only spring forming capability but the ability to verify force, geometry, and durability. QIFENG SPRING positions its testing workflow around that requirement.
quality
Inspection System
- Incoming material inspection
- In-process inspection
- Final inspection
- Batch management
- 6S management
- Inspection records for critical product categories
quality
Testing Focus
- Spring force testing
- Torque testing
- Hardness testing
- Tensile strength testing
- Fatigue strength testing
- Metallographic analysis
quality
Quality Positioning
The quality workflow is aimed at stable spring force, consistent geometry, and repeatable surface and heat treatment performance across production lots.
Quality Visuals
Inspection and Verification
