Montanstahl manufactures laser-welded profiles for architectural projects from raw materials with aimproved surface finish. The sheet metal strips that make up the profiles are laser cut from hot rolled sheets, annealed and finally pickled or sandblasted. The sharp-edged, laser-welded steel profiles from Montanstahl are sand blasted after the welding and straightening operations, which leads to a clean and homogeneous surface appearance. This standard surface finish of the material is defined by the surface class Sa 3 according to the standard EN (ISO) 8501-1. The blasted surface Sa 3 has a uniform gray-white metallic finish. It is slightly roughened by the blasting grains. This leads to a good adhesion for further processing by coating, painting, hot-dip galvanizing and so on. Oil, dirt, corrosion elements, grease, visible scale, rust or oxides, paint or other foreign bodies are removed from the surface. The surface is already suitable for the application of the corrosion protection.
Please note that the raw material used is generally suitable for hot-dip galvanizing in accordance with EN 10025-2, but this must be specified explicitly when ordering.