Fixing accessories industry

For the needs of the fixing accessories industry, our services at Pinnoitus Helin will provide improved anti-corrosion properties and appearance.

We produce zinc coating for bolts, nuts and other fixing accessories. In addition, we use black passivation of zinc-iron to blacken stainless fixing accessories. We provide anti-corrosion treatment of springs and small-sized components both in drums and suspensions.

Owing to our versatile zinc electroplating process line, we can also offer thicker zinc layers and various types of passivation (blue, yellow and black passivation) also equipped with a sealer if the application is more demanding in terms of its corrosion circumstances.

Surface treatment techniques

Electrolytic zinc plating

Zinc-iron alloy coating