ASME B16.47 Series A FlangeS WN&BL

ASME Flanges /

ASME B16.47 is the American standard for large-diameter steel flanges, covering NPS 26 through NPS 60 (DN 650–DN 1500).
It defines the dimensions, tolerances, materials, marking, and pressure–temperature ratings for weld neck and blind flanges used in piping systems.

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