ONORM DIN 55928-4 Beib.2-1992 Protection of steel structures from corrosion by organic and metallic coatings - Preparation and testing of surfaces - Photographic examples for local machine abrading (preparation grade PMa)
1992ONORM DIN 55928-4 Beib.2-1992 Protection of steel structures from corrosion by organic and metallic coatings - Preparation and testing of surfaces - Photographic examples for local machine abrading (preparation grade PMa)