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ISO 657-1:2026

Hot-rolled steel sections — Dimensions, sectional properties and tolerances — Part 1: Angles, sloping flange channels and sloping flange beams ISO 657-1:2026

Publication date:   Apr 27, 2026

General information

60.60   Standard published   Apr 27, 2026

ISO

ISO/TC 17/SC 3 Steels for structural purposes

International Standard

77.140.70   Steel profiles

Buying

Published

Language in which you want to receive the document.

Scope

This document specifies requirements for dimensions, sectional properties and tolerances for hot-rolled sections as follows:

equal angle LE (L section);
unequal angle LU (L section);
sloping flange channel US (U section);
sloping flange I beam IS(I section).

This document is used together with technical delivery conditions especially, but is not limited, ISO 630-1, ISO 630-2, ISO 630-3, ISO 630-5 and ISO 630-6.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 657-1:1989

WITHDRAWN
ISO 657-2:1989

WITHDRAWN
ISO 657-5:1976

WITHDRAWN
ISO 657-11:1980

WITHDRAWN
ISO 657-15:1980

NOW

PUBLISHED
ISO 657-1:2026
60.60 Standard published
Apr 27, 2026




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