I.S. 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：National Standards Authority of Ireland
专家解读视频
Provides the dimensions and tolerances of circular tubes for structures in aluminium and aluminium alloys, diameter 6 mm equal to or less than D equal to or less than 100 mm - thickness 1 mm equal to or less than a equal to or less than 6 mm, for aerospace applications.
NF EN 2257:1997 - Identical
UNI EN 2257:1997 - Identical
NS EN 2257 Ed. 1 (1997) - Identical
SS EN 2257 Ed. 1 (1997) - Identical
UNE EN 2257:1997 - Identical
NEN EN 2257:1997 - Identical
BS EN 2257:1997 - Identical
DIN EN 2257 (1997-03) - Identical
ONORM EN 2257:1997 - Identical
NBN EN 2257:1997 - Identical
