NEN EN 2257:1997现行
Aerospace Series - Circular Tubes For Structures In Aluminium And Aluminium Alloys - Diameter 6 Mm ≪= D ≪= 100 Mm - Thickness 1 Mm ≪= A ≪= 6 Mm - Dimensions
出版：Nederlands Normalisatie Instituut
专家解读视频
1997 [01/01/1997]
BS EN 2257:1997 - Identical
DIN EN 2257 (1997-03) - Identical
I.S. EN 2257:1997 - Identical
NS EN 2257 Ed. 1 (1997) - Identical
SS EN 2257 Ed. 1 (1997) - Identical
UNE EN 2257:1997 - Identical
ONORM EN 2257:1997 - Identical
NBN EN 2257:1997 - Identical
NF EN 2257:1997 - Identical
UNI EN 2257:1997 - Identical
