ISO 657

ISO 657 (Hot-rolled steel sections) is an ISO standard that specifies the tolerances for hot-finished circular, square and rectangular structural hollow sections and gives the dimensions and sectional properties for a range of standard sizes.

This first edition as an International Standard constitutes 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.

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
gollark: That sounds like possibly excessive pessimism. Intelligence would be coming up with long term plans which are flexible enough to be able to deal with changing circumstances, and being able to execute on them.
gollark: I tend to over*research* stuff in advance a lot, but not actually plan based on it because I would never stick to it anyway.
gollark: I see.
gollark: You seem to be doing interesting stuff, though.
gollark: I would be wary of advance planning like that. Especially considering the current situation.

References


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