
Steel tubes and fittings - Symbols for use in specifications Part 2: Square and rectangular hollow sections
出版:International Organization for Standardization

专家解读视频
PN ISO 3545-2:1996 - Identical
NS ISO 3545-2 Ed. 1 (1991) - Identical
NF EN 10266:2004 - Identical
KS D ISO 3545-2:2005 - Identical