What standards apply to steel grating?
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.
State the governing standard and required documents in the inquiry. The supplier should confirm the proposed product, inspection scope and available order-specific evidence before the order is placed.
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