DIN 4000-57
DIN 4000-57 Tabular layouts of article characteristics for filler metals for welding, brazing and soldering, fluxes and adhesives
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/1990
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/1990