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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

Apr 27, 2026

General information

60.60     Apr 27, 2026

ISO

ISO/TC 17/SC 3

International Standard

77.140.70  

English  

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Published

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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WITHDRAWN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WITHDRAWN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WITHDRAWN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WITHDRAWN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WITHDRAWN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