UNI EN 131-1:2011被替代
Ladders - Part 1: Terms, Types, Functional Sizes
出版：Italian Standards
专家解读视频
Deals with terms and describes the general design characteristics of ladders.
NEN EN 131-1:2007 - Identical
NS EN 131-1 Ed. 1 (2007) - Identical
UNE EN 131-1:2007 - Identical
NS EN 131-1:2007 - Identical
SS EN 131-1:2007 - Identical
EN 131-1:2015 - Identical
NBN EN 131-1:2007 - Identical
