Dibujos técnicos para estructuras metálicas.
TECHNICAL DRAWINGS FOR STRUCTURAL METAL WORK.
DESSINS TECHNIQUES POUR CONSTRUCTIONS MÉTALLIQUES.
Buy on AENOR
01.100.30 / Construction drawings
CTN 1 - General standards
ISO 5261:1981 (Identical)
It is cancelled by: UNE-EN ISO 5261:2000