Flange table ansi bs 10 nominal size 25mm 1 in bs 4504 diameter of flange bolt circle number number of bolts diameter of bolts diameter of holes diameter of raised face height of raised face thickness of flange. Flanges and their joints circular flanges for pipes, valves, fittings and accessories, pn designated part 1. A blind flange is a plate for covering or closing the end of a pipe. Inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches. There are many common flange standards and flanges within the same standard. Ansi class flange types regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems. Industry standard is to make to the slip on length through the hub. Meeting service and quality demands since 1986 texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Dimensions sizes and dimensions of pipes and tubes, and their fittings inside and outside diameter, weight and more. Iso equivalents, learn how standards are developed in the united states, and find the answers to frequently asked ansi questions by visiting. The ratings were published as american war standard b16e51943.
G mm wn blind sow sw nominal size class 150 flanges to asme b16. Consequently, for any given tube diameter, asa flanges have much larger o. Flange od a mm length thru hub bolt drilling flange thickness d mm bore sow sw b mm raised face diam. Class 150 flanges except lap joint will be furnished with 0.
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 flanged fittings. Coastal flange stocks import and domestic ansi b16. Flat face flanges may be provided at full thickness, c, or with raised face removed the latter is nonstandard. Supply steel flange forged flanges ansi din en10921 bs4504. In contrast, ansi standards are aimed at industrial flange applications. The document specifies requirements for circular flanges made from ductile, grey and malleable cast iron for dn 10 to dn 4000 and pn 2,5 to pn 63. Lanl engineering standards manual pd342 chapter 17 pressure safety section d20b31. For the bore b1 other standard wall thickness, refer to page 46,47.
Annex b was updated to include modified and new examples. Flange to the old din standard are compatible to the new din en 10921. Ansi class 150 ansi class 300 dn inch d hcd d bolt n d hcd d bolt n. Weights are based on manufacturers data and are approximate. Sometimes people use the word class instead of ansi. Manufactures and supplies flanges according to standards. An investigation was made into the factors determining stiffness of flanges and flange hubs. Awwa flange standard, awwa c207 flanges manufacturers. Flange dimensions are determined by the pipe size and the pressure class required for the application. 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 flanged fittings with integral bases. Flange comparison guide select size below for comparison what is dn. Technical data jersey village, texas coastal flange.
Flanges are standardized according publications from. Our company offers a wide range of flanges like pl, sw, bl, wn,so,lj, asme ansi b16. Phelps has the equipment and capability to supply all standard sizes in 125150 lb. Class 150 to class 900 the following section is in order by pressure class due to the overlapping dimensions of some standards. American national standard s institute ansi higher numbers denote higher pressures.
Carbon steel flanges mechanical properties and chemistry conform to astm a105. Standard marking system for valves, fittings, flanges, and unions is available on the ansi. Standard flange gaskets are fabricated to be compatible with asme ansi pipe flanges in accordance with dimensional criteria shown in api standards 601 and 605. Simply turn to the pressure class required and find the dimensional standard of your choice. Ansi mss standard practice sp55 ii foreword the mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of. Click the continue reading industrial flange catalog. There are many common flange standards and flanges within the same standard can etiher be flat commonly cast iron, ductile iron or raised face commonly cast steel and stainless steel. Pdf asme b16 5 20 pipe flanges and flanged fittings. Metal industries is a professional steel flanges and forgings manufacturer in india, specialize in manufacturing asme ansi b16. Section 8 flanges this section contains extracts from american and british specifications applicable to stainless steel flanges. Ansi b16 valve face to face dimensions also available short pattern. We offer fiberglass products such as manways, flange, elbows, couplings, and butt wrap kits. For 10 years prior to the change, the standard included both and was listed as ansi.
A draft standard is listed in this section under the ansi accredited standards developer asd. These fittings have identical face to face and center to face dimensions and the same flange drilling as ansi b16. An investigation was made into the factors determining stiffness of flanges and flange. In some sizes, bolt holes are slightly larger to give better clearance. This double marking makes it clear that both standards are met. Flange tolerance pdf 296kb welding ends pdf 447kb ring joint flanges pdf 146kb print this page email this page. Experience in using the standard showed the need for hub dimensions of companion flanges and for other changes, including rerating of 250 lb and 50 lb flanges and development of flanged fittings with integral bases. For specific nonferrous flanges, flanged fittings, and flanged unions, extra material designations have been included. Bolt specifications for standard ansi flanges flange designation bolt qty. Ansi flanges consist of flanges between 12 through 24. This european standard for a single series of flanges specifies requirements for circular steel flanges. American national standards, including the national adoption of iso and iec standards as american national standards, and on proposals to revise, reaffirm or withdraw approval of existing american national standards. The long tapered hub of wnrf flanges, differentiates them from other types of flanges.
Simply turn to the pressure class required and find the dimensional standard. The adaptation and adjustment to suit vacuum conditions led to a deterioration of standards. Carbon steel pipe flanges dimensions and weights atlas steels. This standard covers tolerances, dimensions, stamping and material grades that conform to american national standards. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. Class 1503006001500 2500 din pn 6 welding necksliponblind flanges din pn 10 welding neckslipon. Asme b16 5 20 pipe flanges and flanged fittings nps 1 2 through nps 24 metric inch standard. A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe for example, a closet flange. This flange catalog is about 80 pages long, and you are more than welcome to save it for future reference. Go with the flange catalog that is the standard of the industry the following is an industrial flange catalog that provides dimensions and weights for the majority of standard flanges we supply. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. Ansi american national standards institute ansi provides a forum for development of american national standards. These flanges are highly durable, corrosion resistant and reliable.
Flanges are furnished faced, drilled and spot faced or back faced. Our range of flanges finds application in industries like engineering, construction, chemical, oil field and power plant. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together. Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Industry standard and awwa flanges weld neck, slipon, blind. Standard asmeansi flange gaskets phelps industrial products. Ansi standards list american national standards institute asq. The six common types of ansi class flanges, including. Put simply, it is a rough translation of mm from imperial sizes, assuming that an inch is 25mm. Flange tables flanges are commonly used to connect valves into pipework making it easier for removal and maintenance. Browse all categories in the coastal flange catalog including ansi flanges,asme flanges,awwa flanges,industry standard flanges. 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.
In this roughness window both standards are fulfilled. Quality standard for steel castings for valves, flanges. A draft standard is listed in this section under the ansi accredited standards. For example, awwa flange ratings are applicable only at atmospheric temperature, while ansi ratings cover flange installations from 20f to 1500f. Standard as2129 these flanges are equivalent to the bs10 flanges, except that all dimensions are specified in mm.
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