Stainless steel alloy contains Cr, Ni and some other elements. Its erosion resistance improves a lot with Cr. Regularly, stainless steel contains more than 12% Cr. Architectural stainless steels are type 304 and 316.

Stainless steel for roof system has good metallic feel and erosion resistance. Stainless steel coated by PVDF is one of the most excellent metals on roof.

The appearance of metallic sheets can have effects of metallic natural color, metallic pre-passivation, surface stucco, colorful coatings and so on. Polyester paints appointed in international standard color sample card RAL or PVDF coating system can be chosen by customers, in order to meet the requirements from architects and building owners.