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DE?? ???
?? 25??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ??, ??, ???? ? ?? ??, ??, ???, ?? ????, ??, ?? ? ? ??.
CZ-CSN, ?? ???
SCC, ?? ???
Society of Automotive Engineers (SAE), ?? ???
American Welding Society (AWS), ?? ???
WRC - Welding Research Council, ?? ???
American National Standards Institute (ANSI), ?? ???
EEMUA - Engineering Equipment and Materials Users Association, ?? ???
Association Francaise de Normalisation, ?? ???
BE-NBN, ?? ???
US-CFR-file, ?? ???
Danish Standards Foundation, ?? ???
British Standards Institution (BSI), ?? ???
GOST, ?? ???
GSO, ?? ???