Quality Control & Certifications
Precision quality management from incoming materials to finished products
Our Process
Multi-Stage Quality Control
Quality is embedded at every step of our manufacturing process — not just at the end.
Incoming Material Inspection
Under ISO 9001, we maintain comprehensive documentation including quality manuals, system procedures, and work instructions. Every incoming batch requires material chemistry verification and mill test certificates.
- Material chemistry verification
- Surface defect inspection
- Hardness testing
- Mill test certificates (MTC) required
In-Process Quality Checks
During production, operators perform regular self-inspection and supervisors conduct periodic audits. SPC (Statistical Process Control) monitors critical dimensions in real time.
- Operator self-inspection at each stage
- SPC monitoring of key dimensions
- Equipment calibration verification
- Batch process records maintained
Heat Treatment Verification
Heat treatment is critical to achieving required hardness and strength. We monitor furnace temperatures, verify quenching parameters, and test sample parts from each batch.
- Temperature data logging
- Rockwell / Vickers hardness testing
- Microstructure analysis (samples)
- Batch heat treatment records
Final Dimensional Inspection
Every finished part is measured against drawing specifications. Critical dimensions receive 100% inspection; others are sampled per AQL standards.
- 100% inspection on critical dimensions
- AQL sampling on non-critical dims
- Thread gauge verification
- Visual inspection for surface defects
Functional Testing
Selected samples undergo functional testing including torque testing, tensile testing, and fatigue life testing to verify real-world performance.
- Tensile and yield strength testing
- Proof load testing
- Fatigue life testing (samples)
- Salt spray corrosion testing
Final Documentation & Traceability
Every shipment includes full documentation: inspection reports, material certificates, heat treatment records, and dimensional data. Complete traceability from raw material lot to finished part.
- Inspection reports per lot
- Material certificates (MTC)
- Heat treatment charts
- Full batch traceability
Equipment
Inspection & Testing Equipment
CMM
Coordinate Measuring Machine for precise dimensional verification of complex parts
Optical Comparator
Profile measurement for thread forms and complex contours
Tensile Tester
Universal testing machine for tensile strength, yield strength, and elongation
Hardness Tester
Rockwell and Vickers hardness testers for surface and core hardness
Spectrometer
Optical emission spectrometer for precise chemical composition analysis
Salt Spray Chamber
Corrosion resistance testing for surface treatments and coatings
Thread Gauge Sets
Go/No-Go gauges for thread verification per DIN, ISO, and ANSI standards
Profile Projector
Optical profile measurement for complex part geometries
Certifications
Quality Standards & Compliance
ISO 9001
Quality Management System — Certified by DNV
PPAP Support
Production Part Approval Process for automotive OEMs