ASME B16.5-2009


Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
standard by ASME International, 06/30/2009

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This Standard covers pressure-temperature ratings,materials, dimensions, tolerances, marking, testing,and methods of designating openings for pipeflanges and flanged fittings. Included are:

  • flanges with rating class designations 150, 300,400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24and flanges with rating class designation 2500 in sizesNPS 1/2 through NPS 12, with requirements given in bothmetric and U.S. Customary units with diameter of boltsand flange bolt holes expressed in inch units
  • flanged fittings with rating class designation150 and 300 in sizes NPS 1/2 through NPS 24, with requirementsgiven in both metric and U.S. Customary unitswith diameter of bolts and flange bolt holes expressedin inch units
  • flanged fittings with rating class designation400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24and flanged fittings with rating class designation 2500in sizes 1/2 through NPS 12 that are acknowledged inNonmandatory Appendix E in which only U.S. Customaryunits are provided

This Standard is limited to:

  • flanges and flanged fittings made from cast orforged materials
  • blind flanges and certain reducing flanges madefrom cast, forged, or plate materials
  • Also included in this Standard are requirements andrecommendations regarding flange bolting, gaskets, andjoints.

Product Details

ANSI Approved
Number of Pages:
File Size:
1 file , 4 MB
Product Code(s):
M1509Q, M1509Q, M1509Q