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DE?? ???
?? 23??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ?? ?? ? ??, ???, ??? ?? ? ?? ??, ??, ?? ??, ?? ? ?? ??, ?? ??.
American Society for Testing and Materials (ASTM), ?? ???
Gosstandart of Russia, ?? ???
VN-TCVN, ?? ???
German Institute for Standardization, ?? ???
Professional Standard - Petroleum, ?? ???
Japanese Industrial Standards Committee (JISC), ?? ???
British Standards Institution (BSI), ?? ???