ASME B16.5

Abstract

<strong>General</strong> <br>(a) This Standard covers pressure&#8211;temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are <br>(1) flanges with rating class designations 150, 300, 400, 600, 900, and 1500 in sizes NPS &#189; through NPS 24 and flanges with rating class designation 2500 in sizes NPS &#189; through NPS 12, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units <br>(2) flanged fittings with rating class designation 150 and 300 in sizes NPS &#189; through NPS 24, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units <br>(3) flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS &#189; through NPS 24 and flanged fittings with rating class designation 2500 in sizes &#189; through NPS 12 that are acknowledged in Nonmandatory Appendix E in which only U.S. Customary units are provided <br><em>(b)</em> This Standard is limited to <br><em>(1)</em> flanges and flanged fittings made from cast or forged materials <br>(2) blind flanges and certain reducing flanges made from cast, forged, or plate materials <br>Also included in this Standard are requirements and recommendations regarding flange bolting, gaskets, and joints.