For graphical symbols used for welding, general symbols are compiled. They are intended for the use on equipment, e.g. on operating parts and instrument displays or directly on objects, to instruct persons handling the equipment as to its use and operation.#,,#
DIN 32520-1:1987 history
2016DIN 32520:2016 Graphical symbols for welding - Graphical symbols for arc welding
1987DIN 32520-1:1987 Graphical symbols for welding; basic graphical symbols and principles