10.20 Oct 30, 2026
ISO
ISO/TC 156
International Standard
This document specifies principles and a five-level classification for evaluating the corrosion condition of structural parts made of unpainted weathering steel from the appearance of rust. It provides criteria to support routine inspection and decisions on continued observation, further investigation, repair or reinforcement.
PROJECT
ISO/NP 27237-1
10.20
New project ballot initiated
Oct 30, 2026