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Materials + Surface treatment

The most economical corrosion protection for gratings is hot-dip galvanizing. Zinc provides an excellent long-term corrosion protection under standard atmospheric conditions. Other materials such as stainless steel or aluminum require only a passivation to provide a long-lasting protection against corrosion. Below, you will find the standard anti-corrosion solutions for different metals.


Hot-dip galvanizing

The term hot-dip galvanizing specifies the process in which a zinc coating is applied by immersing the pretreated parts in molten zinc. The zinc coating adheres so firmly to the surface that it does not peel off or crack under normal mechanical stress, e.g. during transport, when walking or even when driving on it.

Galvanized and bituminized

A bitumen dipping is often used in acidic environments because bitumen (Inertol) offers a high resistance to such media. The galvanizing provides an excellent primer for the coating of bitumen, thereby increasing the lifespan of our products, even in highly loaded areas.


Stainless steel is resistant to corrosion through an invisible passive layer. To counteract contamination from mechanical machining and to achieve an effective passive layer, a chemical surface treatment, pickling, is applied.


The anodizing process is a method of surface technology used to produce a protective oxide layer on aluminum.

Anodizing is typically applied in decorative areas to give the aluminum a uniform appearance. Moreover, different color shades can be achieved according to the EURAS color fans..


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