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DE??? ??
?? 16??? ??? ??? ??? ??? ??.
?? ???? ??? ??? ??? ??? ??? ????: ????, ??, ???? ? ?? ??.
American Welding Society (AWS), ??? ??
WRC - Welding Research Council, ??? ??
Group Standards of the People's Republic of China, ??? ??
Society of Automotive Engineers (SAE), ??? ??
Association of German Mechanical Engineers, ??? ??
SAE - SAE International, ??? ??
Korean Agency for Technology and Standards (KATS), ??? ??
International Organization for Standardization (ISO), ??? ??
British Standards Institution (BSI), ??? ??