I.S. EN 10090:1998现行
Valve Steels And Alloys For Internal Combustion Engines
出版：National Standards Authority of Ireland
专家解读视频
Applicable to the grades of wrought high-alloy materials which are used for intake and exhaust valves in reciprocating internal combustion engines.
NS EN 10090 Ed. 1 (1999) - Identical
UNI EN 10090:2000 - Identical
NBN EN 10090:1998 - Identical
NF EN 10090:1998 - Identical
ONORM EN 10090:1998 - Identical
DIN EN 10090 (1998-03) - Identical
BS EN 10090:1998 - Identical
NEN EN 10090:1998 - Identical
SN EN 10090:1999 - Identical
UNE EN 10090:1998 - Identical
SS EN 10090 Ed. 1 (1998) - Identical
