QUALITY CONTROL
From incoming material inspection to final product verification—ensuring excellence in every custom sheet metal project.
Quality is at the heart of Xuan Rong. Our comprehensive quality control system ensures that every product meets or exceeds customer expectations and industry standards. We maintain strict protocols throughout the entire production lifecycle.
Quality Management System
Accredited Certifications
International Standard Compliance
Inspection Equipment
📏 CMM
Coordinate Measuring Machine
High-precision 3D measurement for complex geometries and critical dimensions.
Accuracy: ±0.002mm
🔍 Optical Comparator
Profile Projector
Non-contact measurement for 2D profiles and surface features.
Magnification: 10X – 50X
📐 Vernier Calipers
Digital Precision Tools
Quick and accurate measurement of linear dimensions.
Accuracy: ±0.01mm
📊 Height Gauge
Digital Height Gauge
Precision height and depth measurement for fabricated parts.
Range: 0-600mm
🔬 Hardness Tester
Material Property Testing
Verify material properties and heat treatment results.
Rockwell & Vickers Scales
⚡ Thickness Gauge
Coating Verification
Ultrasonic measurement of powder coating and plating thickness.
Range: 0-2000μm
Quality Control Process
Incoming Quality Control (IQC)
All raw materials are inspected upon arrival. We verify mill test reports, check dimensions, and test chemical properties before release to production.
First Article Inspection (FAI)
The first part produced from any setup is 100% inspected. This ensures machine calibration and tooling accuracy before mass production starts.
In-Process Quality Control (IPQC)
Continuous monitoring during production using Statistical Process Control (SPC) to catch deviations and maintain manufacturing stability.
Final Quality Inspection (FQC)
Comprehensive inspection of finished products. Includes dimensional verification, visual aesthetics, and functional assembly testing.
Outgoing Quality Control (OQC)
Pre-shipment audit focusing on packaging integrity, quantities, and all required quality documentation for global transit.
Inspection Standards
| Inspection Item | Standard / Method | Tolerance Range |
|---|---|---|
| Dimensional Accuracy | CMM / Digital Caliper | ±0.1mm (Per Drawing) |
| Surface Finish | Roughness Tester | Ra 0.8 – 6.3μm |
| Welding Quality | AWS D1.1 / ISO 5817 | Class B or Better |
| Coating Thickness | Magnetic Induction | 60-120μm (Typical) |
| Flatness | Precision Plate / Dial Gauge | ±0.5mm / 1000mm |
| Angle Accuracy | Digital Protractor | ±0.5° |
🌟 Our Quality Commitment
- Zero-Defect Goal – Continuous Improvement Culture
- 100% Inspection of Critical Dimensions
- Full Material Traceability & Documentation
- Corrective & Preventive Action (CAPA) System
- 15+ Dedicated Certified QC Inspectors
- Customer Complaint Response within 24 Hours
- Statistical Process Control (SPC) Implementation
- Third-Party Inspection Coordination
Continuous Improvement
Kaizen Philosophy
We embrace Kaizen in every department. Regular internal audits and employee training cycles ensure that our fabrication processes are constantly being refined for higher precision and lower error rates.
Customer-Driven Quality
Feedback is integrated into our workflow. Every project wrap-up includes an analysis of tolerances achieved versus tolerances requested to push the boundaries of our manufacturing capabilities.