QUALITY AND CONTROL LABORATORY

contrôle qualité visserie spéciale

Quality and control laboratory

At VIAL, we are able to meet all your requests. By going from the most urgent to the most specific, we guarantee quality and traceability on all our production.

Our totally Made in France production of screws (anchor rods, threaded rods, CHC, TH, THCC screws, custom screws, etc.) complies with the standards and certificates in force in the field of forging, machining and galvanizing.

Quality System 

The general provisions deployed in our company VIAL FRERES located 9 rue Saint Régis in DUNIERES 43220 to guarantee the quality of its products are the following: 

Our following areas of activity are covered by our quality management system which is certified according to the requirements of NF EN ISO 9001:
• Trading of fasteners
• Manufacturing by forging, machining, rolling and hot-dip galvanizing of fasteners 

Note : We work according to customer plans or standards, and therefore do not realize design and development in our activities 

Our following areas of activity are covered by our quality management system which is certified according to the requirements of the Pressure Equipment Directive 2014/68 / EU :
• Manufacture, testing and delivery of bolts (screw rods, screws, nuts and free-cutting parts) according to customer drawings, for the Aeronautics, Railway, Nuclear and Petrochemical industry.

Note : We work according to customer plans or standards, and therefore do not realize design and development in our activities 

See our certificate NF EN ISO 9001 

See our PED Certificate (DESP97_23) 

Laboratory of control

At VIAL Frères, we have our own internal control laboratory to ensure the proper conformity of the special screws and bolts that we produce. It is equipped with :


– Portable device for measuring surface conditions (roughness)
– Projector profile
– Hardness measurement
– Slide-out feet
– Palmer
– Control pads and rings 

We are also able to carry out on your request additional controls such as: ultrasonic tests, penetrant testing, magnetoscopy, tensile tests, resilience, hardness …

Quality control special screws
Quality control special screws
Quality control special screws

Vial Freres