What standards apply to steel grating?
Quick answer
Common references include ANSI/NAAMM MBG 531 (metal bar grating manual) in North America, and material and coating standards such as ASTM A1011/A36 for steel and ASTM A123 for hot-dip galvanizing. Many export markets follow equivalent ISO or national standards.
MBG 531 covers load tables, spans, tolerances and designations for bar grating, while galvanizing to ASTM A123 (or ISO 1461) defines the zinc coating. Stair treads have their own dimensional and safety conventions.
We manufacture to the standard your project specifies and provide the matching documentation; tell us the governing standard and we will confirm bar selection and finish against it.
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