ISO 657

ISO 657 (Hot-rolled steel sections)is anISO standardthat specifies the tolerances for hot-finished circular, square and rectangularstructural hollow sectionsand gives the dimensions and sectional properties for a range of standard sizes.

This first edition as an International Standard constitutes a technical revision ofISORecommendation R 657-1:1968. ISO 657 consists of 21 parts integrating any shapes of sections. ISO 657-1 specifies dimensions ofhot-rolledequal-leg angles.

Amendments

• ISO 657-2:1989
• ISO 657-5:1976
• ISO 657-11:1980
• ISO 657-14:2000
  • Revisions
    • ISO/DIS 12633-2
    • ISO 657-14:1982
• ISO 657-15:1980
• ISO 657-16:1980
• ISO 657-18:1980
• ISO 657-19:1980
• ISO 657-21:1983

References

• ISO Catalogue in the ISO website