ISO 657-1:2026

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

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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

PUBLISH DATE 2026
ISO 657-1:2026

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

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

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

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