Quality Control at Beijing JCEN — ISO 9001 Certified Metal Fabrication
At Beijing JCEN, quality is not a step — it’s a mindset embedded across every stage of production. Our ISO 9001:2015 certified quality management system ensures every custom metal part meets international standards for automotive, aerospace, medical, electronics, and industrial manufacturing.
With 30+ years of manufacturing expertise and a dedicated quality assurance team, we deliver zero-defect parts to OEMs across North America, Europe, and Asia. Every order is backed by comprehensive inspection reports, material certificates, and traceability documentation.
Our 5-Stage Quality Inspection Process
Every custom metal fabrication order at Beijing JCEN goes through a rigorous 5-stage quality control process to ensure precision, consistency, and compliance.
Stage 1: Incoming Material Inspection (IQC)
Before production begins, all raw materials undergo strict verification against EN 10204 3.1 material certification standards. This includes:
- Chemical composition analysis (stainless steel, aluminum, carbon steel, copper, brass)
- Material grade verification (SUS304, SUS316, AL5052, AL6061, Q235, Q345)
- Surface defect inspection
- Dimensional and thickness verification
- Supplier certificate cross-referencing
Stage 2: First Article Inspection (FAI)
Before batch production starts, our engineers perform a First Article Inspection to validate every critical dimension against the customer’s engineering drawings. This step is essential for:
- Automotive component production (compliant with IATF principles)
- Aerospace parts requiring AS9100-level precision
- Medical device components with strict tolerance requirements
- Custom OEM designs with complex geometries
Stage 3: In-Process Patrol Inspection (IPQC)
During production, our QC technicians perform routine checks every 2 hours to catch any deviation early. This includes:
- Real-time dimensional verification using digital calipers, micrometers, and gauges
- Surface finish inspection
- Tool wear monitoring
- Statistical Process Control (SPC) data collection
Stage 4: Final Dimensional Inspection (FQC)
Before shipment, 100% of critical dimensions are verified using CMM (Coordinate Measuring Machines) with accuracy of ±0.002mm. Our final inspection includes:
- Full CMM dimensional measurement
- Surface roughness testing (Ra values from 0.4 to 12.5)
- Hardness testing (Rockwell, Vickers, Brinell)
- Visual inspection for cosmetic defects
- Functional testing (fit, form, assembly compatibility)
Stage 5: Outgoing Quality Control (OQC)
The final gate before your parts leave our facility. Every order includes:
- Full dimensional inspection report
- Material certificate (EN 10204 3.1)
- Surface treatment report (where applicable)
- Packaging verification (anti-rust, anti-collision)
- Export documentation compliance
PPAP Production Part Approval Process
For customers requiring formal validation, Beijing JCEN complies with the Production Part Approval Process (PPAP) — the automotive industry standard for supplier qualification.
Preparation Phase
- Design Records: Complete engineering drawings, specifications, and design documents
- Engineering Change Documents: Authorized change notices and revision control
- Customer Engineering Approval: Required approvals prior to production
Manufacturing Process Standards
- Production Process Control: All production uses formalized processes, tooling, measuring instruments, raw materials, trained operators, qualified production facilities, controlled environments, and validated process parameters
- Production Quantity Validation: PPAP production runs must consist of at least 300 consecutive pieces, produced over 1 to 8 hours of continuous operation
Quality Testing Documentation
- Dimensional Results: Full verification per design records and control plans
- Material Performance Test Results: Complete material property documentation
- Initial Process Study: Statistical validation of production process capability
- Measurement System Analysis (MSA): Reliable testing methods verified through Gage R&R studies
Document Submission Package
- Parts Submission Warrant (PSW): Complete submission with all test results
- Appearance Approval Report (AAR): Where cosmetic requirements apply
- Production Part Samples: Representative samples of final production parts
- Reference Samples: Master samples for future comparison
- Inspection Aids: Custom fixtures and gauges for measurement consistency
Industry-Specific Quality Standards We Meet
Beijing JCEN’s quality system is trusted by OEMs across the world’s most demanding industries:
- Automotive: PPAP submission ready, compliant with IATF 16949 principles
- Aerospace & Defense: Precision fabrication meeting AS9100 quality benchmarks
- Medical Devices: Clean-room compatible processing, biocompatible material handling
- Electronics & Telecommunications: EMI shielding validation, ROHS/REACH compliant
- Industrial Machinery: Heavy-duty tolerance control, load-bearing verification
- Renewable Energy: Weather-resistant coating validation, structural integrity testing
- Consumer Products: Cosmetic surface quality, functional durability
- Food & Pharmaceutical Equipment: Sanitary-grade stainless steel finishing
Our Certifications and Compliance Standards
- ISO 9001:2015 — Quality Management System certified
- EN 10204 3.1 — Material certification for all metal supplies
- RoHS Compliant — Restriction of Hazardous Substances
- REACH Compliant — European chemical safety regulation
- Alibaba.com Verified Supplier — Third-party audited
Advanced Quality Testing Equipment
Our dedicated quality laboratory is equipped with industry-leading measurement and testing instruments:
- CMM (Coordinate Measuring Machines): Accuracy ±0.002mm
- Optical Comparators: For 2D profile verification
- Surface Roughness Testers: Ra 0.05 to 25 μm range
- Hardness Testers: Rockwell, Vickers, and Brinell scales
- Salt Spray Testing Chamber: Corrosion resistance validation
- Digital Calipers & Micrometers: Precision measurement to 0.01mm
- Height Gauges & Bore Gauges: For complex geometry verification
Zero-Defect Commitment
We back every order with our Zero-Defect Delivery Commitment:
- ✅ Full replacement or refund for any defective parts
- ✅ Free re-inspection service for repeat orders
- ✅ Continuous improvement based on customer feedback
- ✅ Dedicated project engineer as your single point of contact
Ready for Your Custom Metal Fabrication Project?
Whether you need a single prototype validated to PPAP standards or full-scale production for automotive OEMs, Beijing JCEN delivers quality-assured parts on every order.