ISO 683-12:1972废止
Heat-treated Steels, Alloy Steels And Free-cutting Steels - Flame And Induction Hardening Steels
出版：International Organization for Standardization
专家解读视频
1972
NBN E 24 016:1986 - Identical
UNI 7847:1979 - Similar
UNI 8551:1984 - Similar
UNI 8551 : 1984 - Similar to
UNI 7847 : 1979 - Similar to
NBN E 24 016 : 1986 - Identical
NBN E 24 016 : 1986 - Identical
UNI 8551 : 1984 - Similar to
UNI 7847 : 1979 - Similar to
