To order a reducing flange, state the smaller size first, then the outside diameter of the larger size. Flanges are standardized according publications from. Carbon steel pipe flanges dimensions and weights atlas steels. Ifi111 had included a table that listed the minimum lengths that are fully threaded and longer lengths were. In general, 10 mpa 1450 psi average gasket stress is targeted. Content provider american society of mechanical engineers asme add to alert. Class 150 flanges nps 12 to 24 welding neck traceparts. Larger sizes as well as intermediate sizes can be furnished. Flange drilling, outside diameter, thickness, and facing are the same as those of the standard flange of the size from which the reduction is being made. Din en 10922 cast iron flanges, for pn 63100 din en 10921 steel flange standards are referred to. Ansi class 150 ansi class 300 dn inch d hcd d bolt n d hcd d bolt n inch inch 25 1 108 80 16 12 4 124 89 20 58 4 32 1. October 23, the standard was published as ansi b16. The head dimensions for flange screw listed in asme b18.
Gasket facing is indicated on the facing drawings by gf. Weights are based on manufacturers data and are approximate. Insert flanges to your sketchup model with the engineering toolbox sketchup extension. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do. Weldneck flange, long weldneck flange, lap joint flange. Calculated flange weights in pounds class 150 nominal pipe size outside diameter inches slipon threaded socket weld weld neck blind lapjoint 12 3. D slip ons and socket welds are not included in asme ansi.
Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Available for solidworks, inventor, creo, catia, solid edge, autocad, revit and many more cad software but also as step, stl, iges, stl, dwg, dxf and more neutral cad formats. These are produced to suit nominal borenps pipe sizes. Dimensions din flange din 2501 seal ledge din 2526 form c l diameter of holes number of holes d seal ledge diameter k diameter of hole circle d flange diameter b total flange thickness. The pressure rating will also determine the dimensions of the flange full details can. Nominal pipe size outside diameter o thickness t raised face diameter r length thru hub y hub diameter x bore b number of holes diameter of holes bolt circle c approximate weight lbs 12 3. As an alternative, inquiries may be submitted via email to. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16.
Flange dimensions are determined by the pipe size and the pressure class required for the application. Asme american society of mechanical engineers ansi b 16. Documents sold on the ansi standards store are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in hard copy format. Asme is a notforprofit membership organization that. The design of the flange allows for a full penetration weld at its base where it connects to the pipe. The design of a flange involves the selection of the gasket material, type, and dimensions, flange facing, bolting, hub proportions, flange width, and flange thickness. Except for diameter of bolts and flange bolt holes, combining values from the two systems constitutes. These specification include only welding neck and blind flanges. Bolted flange design according to asme section viii division 1. Operating instructions flanges according to din en. Dimensions of ansi 150lb rfso flanges slipon flanges.
Flanges are standardized according publications from organizations like asme, mss, api and others. Flat face flanges may be provided at full thickness, c, or with raised face removed the latter is nonstandard. Grade and composition symbols for carbon steel butt welding fittings seamless pipe astm a106 grade a plate astm a285 grade c. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. It is welded both inside and out to provide sufficient strength and prevent leakage.
Sizes nps 12 through 312 are same as class 600 flanges. Download class 150 flanges nps 12 to 24 welding neck. Secretary b16, the american society of mechanical engineers, three park avenue, new york, ny 100165990. Operating instructions flanges according to din en asme. Doc asme b16 25 buttwelding end dimensions database.
Weld neck flange dimensions are covered in asme b16. Coastal flange stocks import and domestic ansi b16. Weld neck flange dimensions class 150 to class 2500. Nov 12, 2017 flange bolting dimensional recommendations.
The length of useful thread b plus threads with fully formed roots and flat crests shall not be less than l2 effective length of external thread required by american national standard for pipe threads ansiasme b1. Typical facings for steel pipe flangesdimensions typical facings for steel pipe flangesdrawings facing dimensions for. During dimensional inspection of flange, you should check for. Mss sp44 is the only source for the nps 22 flange dimensions above. Cast copper alloy pipe flanges and flanged fittings. Flanges according to din en asme jis gost supplementary instructions 3 47574en140206 2 dimensions 2. Blind flanges, available in all sizes and pressure ratings, are solid forgings used to close off the end of a piping. Designof weld neck flangeas per asme sectionviii division2. The slipon flange has a low hub because the pipe slips into the flange prior to welding. Slipon flanges are all bored slightly larger that the o.
Weld neck flange datasheets the weld neck flange, abbreviated as wnf, is a flange type that is usually used with pipes, as opposed to pressure vessels. All dimensions are in inches these flanges will be furnished with a 116 raised face unless otherwise specified. Reducing flanges are available in all types and pressures. Dimensions for classes 400, 600 and 900 nps 38 and larger for series a flanges are the same as for the series b flanges. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do not exceed the allowable stresses specified in 28. Material specifications for the asme boiler code are the same as astm except the letter s is prefixed thereto. Asme bpe tubes fittings according to asme bpe standard rohre formteile gemass asme bpe standard specification, dimensions nd prices spezifikation, abmessungen nd preise certified quality price ali ro nuar 1 2018 preise gelten ab 1. Hex flange screws have typically been manufactured to the requirements of ifi111. Asme is a notforprofit membership organization that enables collaboration, knowledge sharing, career enrichment, and. A 35% carbon maximum for flanges which are to be welded has been established by astm a181 and a105. Asme, the american society of mechanical engineers, will be the essential resource for mechanical engineers and other technical professionals throughout the world for solutions that benefit humankind. Din ansi flange dimensions comparison for din 640 dimensions. Some pdf files are protected by digital rights management. Asme b16 25 buttwelding end dimensions database asme b16 25 buttwelding end.
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