Profiles and tubes are manufactured from hot-dip galvanized steel strips with a galvanization of 100 - 275 g/m² and cold-rolled or pickled sheet strips from first-class suppliers.
Profiles with a requirement for long-term corrosion resistance (e.g. for PV plants) are made from sheets with a special ZnAlMg surface treatment; these coatings protect natural resources, as less zinc is used in their production than in conventional production, but provide the product with up to four times the corrosion protection.
All materials are subject to initial inspection and their quality is certified by the manufacturer.