Publikuar
This first edition as an International Standard constitues a technical revision of ISO Recommendation R 657-1:1968. ISO 657 consists of 21 parts integrating any shapes of sections. ISO 657-1 specifies dimensions of hot-rolled equal-leg angles.
PUBLISHED
ISO 657-1:1989
90.92
Standard to be revised
29 maj 2024
IN_DEVELOPMENT
ISO/FDIS 657-1