Escaleras. Parte 4: Escaleras articuladas con bisagras simples o múltiples.
Ladders - Part 4: Single or multiple hinge-joint ladders
Echelles - Partie 4: Echelles articulées à articulation simple et multiple
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See part of the content of the standard
97.145 / Ladders
CTN 81/SC 2 - Collective protective means
EN 131-4:2007 (Identical)
It is cancelled by: UNE-EN 131-4:2020 (Ratificada)
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