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Hot-dip galvanizing

Effective and long-lasting:the best protection for steel

Hot-dip galvanizing is a surface coating process that protects steel from corrosion by using the natural protective properties of zinc. The process involves immersing the metal in molten zinc at approximately 450°C, offering dual protection:

  • Passive by physically separating the steel from external agents (barrier effect);
  • Active through cathodic protection where zinc acts sacrificially due to the electrochemical potential difference between metals.

At our modern facilities in Italy, near Milan, we professionally galvanize light components, large steel structures, and small metal parts used across a wide range of industrial applications.

The Galvanizing Process

Degreasing

Immersion in a surfactant solution.

Pickling

Immersion in hydrochloric acid solution (HCI = 120–130 g/l).

Washing

Water rinse

Fluxing

Immersion in zinc ammonium chloride solution (ZnCl₂ – NH₄Cl)

Drying

Oven at 70–80°C

Galvanizing

Immersion in molten zinc bath (zinc compliant with UNI EN 1179 / 99.5% Zn standard)

A 13-Meter Zinc Bath

Zincol Lombarda operates with modern, high-capacity galvanizing plants. Our 13-meter zinc bath allows for the treatment of both light and heavy metalwork, meeting the needs of various industrial sectors.

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Guaranteed quality
in every project

Find out how our custom solutions can enhance the durability and quality of your structures. Get in touch for a free consultation.

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