DIN 50021:1988 Spray tests with different sodium chloride solutions
DIN EN 28167:1992 Projections for resistance welding (ISO 8167:1989); german version EN 28167:1992
DIN EN ISO 4628-1:2004 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 1: General introduction and designation system (ISO 4628-1:2003); German version EN ISO 46
DVS 2902-4-2001 Basic knowledge, preparation and implementation of resistance spot welding of steel up to 3 mm thick