ISO/FDIS 657-1

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

General information

Current stage: 50.20 Effective date: Feb 6, 2026

Originator: ISO

Owner: ISO/TC 17/SC 3

Type: International Standard

Scope

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 657-1:1989

PUBLISHED
ISO 657-2:1989

PUBLISHED
ISO 657-5:1976

PUBLISHED
ISO 657-11:1980

PUBLISHED
ISO 657-15:1980

NOW

IN_DEVELOPMENT
ISO/FDIS 657-1
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Feb 6, 2026

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