ÖNORM EN ISO 8503-2

1.1 This part of ISO 8503 describes a visual and tactile method for assessing the grade of the Profile that has been produced by one of the abrasive blast-cleaning procedures described in ISO 8504-2. The method uses ISO surface Profile comparators for assessing, on site, the roughness of surfaces before the application of paint or other protective treatments. NOTE - Where appropriate, ISO surface Profile comparators may be used for assessing the roughness Profile of other abrasive blast-cleaned Substrates and, in addition, their use is not restricted solely to surfaces that are to be painted. 1.2 The method is applicable to steel surfaces that have been blast-cleaned by use of either shot abrasives or grit abrasives but is only applicable for grades Sa 2 ¿/2 and Sa 3 of ISO 8501-1 when the entire sutface under test Shows an Overall blastcleaned appearance. lt is applicable to surfaces that have been cleand with either metallic or non -metallic abrasives.