CELO, global industrial fasteners and screw manufacturer

Quality assurance


The Quality Assurance Laboratory in our production sites guarantees that the finished pieces meet their parameter requirements.


Besides the production control specified in our FMEA, our LaserLab Inspection machine accurately measures the pieces’ critical dimensions during production process. 

We perform coating measurements to ensure the fastener’s resistance to corrosion. Our in house coating thickness - measurement systems are based on X-rays and magnetic fields and ensure the thickness of the protective layer.

Environmental tests in salt spray corrosion chambers are also available to comply with DIN 50.021.