EURONORM 89:1971被替代
Alloy Steels For Hot-formed Heat-treatable Springs; Quality Specifications
出版：European Committee for Iron & Steel Standardization
专家解读视频
1971 [01/09/1971]
DIN 17221 : 1988 - Identical
DIN 17221 : 1988 - Identical
BS 970-5(1972) : 1972 - Similar to
DIN 17221 E : 1988 - Identical
NFA 35 571 : 1996 - Similar to
NEN EU 89 : 1986 - Identical
BS 970-5:1972 - Similar
DIN 17221 (1988-12) - Identical
NFA 35 571:1996 - Similar
