Pickled steel, thanks to their characteristics of slenderness, security and resistance is the most suitable material for the construction of doors and windows, which are produced in tubular cold-formed, drawn or profiled. SSS produces its own fixtures pickled mainly using tubular sections, welded continuously, to be finished by painting treatment. Normally, the profiles are supplied raw, with an external temporary protection oil, and require a rigorous pickling – chemical degreasing effected by acidic or alkaline solutions – before any use besides a careful drying. The sealing of the layers of paint depends mainly on the quality of surface preparation. You can use various finishing paint, synthetic, powder or termolaccate. In the case of firing in a kiln at more than 100 ° C, it is always necessary for a degassing tubular profiles galvanized, electrogalvanized or hot-galvanized. It is also necessary to provide, from the outset, the use of tubular who have had the same manufacturing method. This precaution prevents the user to carry out different preparations of surfaces on the same element construction.