
Heat-treatable steels, alloy steels and free-cutting steels Part 15: Valve steels for internal combustion engines
出版:International Organization for Standardization

专家解读视频
UNE 36022:1991 - Identical
GB/T 12773-2008 - Modified
JIS G 7603:2000 - Identical
DIN 17480 (1992-05) - Similar
BS 970-4:1970 - Similar
NFA 35 579:1997 - Similar