This standard covers facetoface and endtoend dimensions of straightway. Pdf asme b16 5 20 pipe flanges and flanged fittings nps 1. Bronze fittings class 125 bronze flanges class 150 bronze flange specifications bronze castings conform to astm b62, uns alloy c83600 bronze flange dimensions conform to asme b16. January 30, 2012 the next edition of this standard is scheduled for publication in 2016. Forged fittings, socket welding and threaded asme b16. Experience in using the standard showed the need for hub dimensions of companion flanges and for other changes, including rerating of 250lb and 1,350lb flanges and development of. Pipe size 2000 3000 6000 2000 3000 6000 2000 3000 6000 2000 3000 6000 b l2 6 18 21 21 25 17 17 19 22 22 25 3. Cast copper alloy threaded fittings classes 125 and 250. It covers pressuretemperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of steel, nickelbase alloys. October 2018 cast copper alloy threaded fittings classes 125 and 250.
Association asa, organized sectional committee b16 to unify and further develop national standards for pipe flanges and fittings and, later, for valves, gaskets, and valve actuators. Asme international thematic collections and certification documents asme bpvc reference standards. This standard covers cast classes 125 and 250 copper alloy threaded pipe fittings with provisions for substituting wrought copper alloys for plugs, bushings, caps, and couplings in small sizes. A stainless steel pipe system is the product of choice for carrying corrosive or sanitary fluids, slurries and gases. Factory made wrought steel buttwelding fittings name of standards organization. Secretary b16, the american society of mechanical engineers, three park avenue, new york, ny 100165990. The api individual certification programs icps are well established worldwide in the oil, gas, and petroleum industries. This standard covers cast class 125 and 250 copper alloy threaded pipe fittings with provisions for substituting wrought copper alloys for plugs, bushings, caps, and couplings in small sized sizes. Other clarifying and editorial revisions were made in order to improve the text. Appendix d be used in lieu of the limits presently outlined in asme b16. Cast bronze threaded fittings classes 125 and 250 asme b16. Guide specification for copper and copper alloy building. Forged fittings, socketwelding and threaded, incorporated forging material listed in table 1 of asme b16.
This standard covers cast classes 125 and 250 copper alloy. By order of the executive director office of the federal register washington, d. Pressure temperature ratings of aluminum alloy flanges. Of thru hole drilling template length through hub flange thk. Historically, in the development of standards and pressuretemperature ratings for steel valves, the various rating classes for flanges provided an obviously logical basis for valve ratings. Nps 12 through nps 24 metricinch standard covers pressuretemperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Today, asme offers a series of 32 different b16 standards that cover pressure temperature. Through nps 2 an american national standard three park avenue new york, ny 10016 usa. Pdf asme b16 5 20 pipe flanges and flanged fittings. This standard pertains primarily to cast class 125 and class 250 bronze threaded pipe fittings. Certain requirements also pertain to wrought or cast plugs, bushings, couplings, and caps. Lanl engineering standards manual pd342 chapter 17 pressure safety section d20b31.
Ferrous pipe plugs, bushings, and locknuts with pipe threads. It covers pressuretemperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of. American society of mechnical engineers legally binding document. As an alternative, inquiries may be submitted via email to. No reproduction may be made of this material without written consent of asme. The american society for testing and materials and the american society of mechanical engineers were designated as sponsors, and the first meeting of the sectional committee was held in pittsburgh, pennsylvania, on may 18, 1928. Reducing flanges are available in all types and pressures.
Once a pdf file has been bound to a computer, it can be opened only from that computer. End user specifications for flanges should be written such that the limits outlined in asme pcc. Asme issues written replies to inquiries concerning interpretations of technical aspects of. This quick guide is unique in providing simple, accessible and wellstructured guidance for anyone studying the api 570 certified pipework inspector syllabus by. Center of pressure tap to flange face nps 3 and smaller nps 4 and larger 0. Drm is included at the request of the publisher, as it helps them protect their by restricting file sharing. Astm b62 msi cast bronze pipe fittings meet the following specifications.