At Gradel-Baudin, we understand that the performance and durability of mechanical components depend largely on the quality of surface treatments. That’s why we offer, through our network of qualified partners, a complete range of processes, applied in particular to screws and nuts. But our real added value goes far beyond simple subcontracting: Gradel-Baudin acts as a technical expert, ensuring that the chosen process and its industrial implementation meet your needs. Here are some examples of possible treatments…

Zinc coating

Electrolytic zinc plating is a surface treatment commonly used to protect metal parts from corrosion. It involves applying a layer of zinc to steel or iron by electrolysis. This process is particularly suitable for screws and nuts, as it provides effective protection in moderately humid environments. At Gradel-Baudin, we offer a range of finishes: white, blue, black, or bichromate. Thanks to our network of specialized partners, we can adjust the thickness of the coating to suit your needs (from 5 to 25 microns) while ensuring compliance with RoHS and REACH standards.

Anodizing

Anodizing is an electrochemical surface treatment for aluminum alloys. It creates a protective, hard, uniform oxide layer that improves corrosion resistance while offering a range of color options (natural, black, gold, red, etc.).
This treatment is particularly popular in the electronics, automotive, and aerospace industries. As a technical expert, Gradel-Baudin can help you choose the type of anodizing (sulfuric, chromic, phosphoric) best suited to your functional and aesthetic requirements.

Hard Anodic Oxidation (HAO)

When wear and abrasion resistance becomes a priority, hard anodic oxidation (HAO) is the ideal solution for harsh environments. This process involves generating a thicker oxide layer (up to 100 microns) on aluminum parts, which is particularly suitable for aggressive environments (industry, defense, robotics, etc.).
Thanks to our partners equipped with specific, controlled baths, we guarantee that the treatment complies with demanding standards.

Unlike a simple subcontracting platform, Gradel-Baudin acts as a true industrial conductor.
Our mission: to coordinate the expertise of our partners to offer you a turnkey technical solution, perfectly controlled from start to finish.

Your benefits within our partner network

1. Time savings: we select the most appropriate surface treatment processes and subcontractors for you.
2. Quality control: our technical experts ensure compliance with standards and expected performance levels.
3. Flexibility and innovation: we know how to think outside the box to meet specific needs.

For any further information about the surface treatments we offer, our team is at your disposal: contact us 😉