The cold-rolled sections are made from hot-dip galvanized steel sheets. The sheets receive a zinc coating of 20 μm thickness and 275 g/m² weight under operational conditions. To protect the coating from damage, structural elements must be safeguarded against mechanical injuries and contamination during transport and storage.

Under normal climatic conditions, approximately 0.1 g/m² of zinc deteriorates annually on the exterior of the building due to corrosion. Furthermore, zinc is capable of "selfhealing" damaged areas through a cathodic reaction. When moisture or vapor comes into contact with the steel surface, it generates a galvanic cell.

When selecting fastening elements, attention must be paid to the appropriate material choice to prevent the occurrence of contact corrosion at the junction of different metals. Therefore, galvanized structural elements must be used in conjunction with galvanized steel fastening elements.