The hub may be larger or omitted as detailed in table 6 table f6 of annex f. Dimensions n1, n2 and n3 are measured at the intersection of the hub draft angle and the back face of the flange. There are no standards that define whether or not flange connections may be used. There are four common pressure classes within the ansiasme standards listed above. This double marking makes it clear that both standards are met. Mss flange standards start with an sp followed by a number. Often, their surfaces are rough and designed for flat seals. Combined external load tests for standard and compact flanges. Grey cast iron copper alloy cast and forged steel pn 6 120 90 4 m12 14 70 2 16. En standard flange,weld neck flange,plate weld flange. In a newly built factory is customary to minimize flange connections, because only one weld is needed to connect two pieces of pipe. For precise data, particularly on flange thickness, refer to relevant standard.
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. Class 300, class 400, class 600, class 900, class 1500. The classes of the flanges are the pressure ratings, which is between class 150 and class 2500. These flange fittings are generally used in vacuum components in the low and medium vacuum range and can be found on a variety of. Ansi class flange types regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems. Dimensions for din2632 pn10 others than din 2633 pn16. A flange standard lays down the dimensions, surface finish, facing type, marking, material and technical specifications for flanges.
Flanges are commonly used to connect valves into pipework making it easier for removal and maintenance. Plastics pipes and fittings peel decohesion test for polyethylene pe electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm. National flange standards in europe have largely been superseded by the european en 1092 series. Flange masses weights according to standard en 10921. Combined external load tests for standard and compact flanges article in international journal of pressure vessels and piping 77. The hub dimensions shall be the same as those of the standard flange of the size to which the reduction is being made. Sizes nps 12 through 312 are same as class 600 flanges. Debris or protrusions in the pipeline can damage a seal or rupture inflatable plugs.
En 10921 flanges specifications dimensions of pn 16 flanges din en 10921 note 1. The american national standards institutes class standards for valves include details on testing, repairs, dimensions and other important issues. Mss sp44 is the standard for steel pipeline flanges. Awwa standards evaluate properties that particularly affect potable water use, as opposed to broader industrial flange applications. A wide variety of flange standard options are available to you, such as type, structure, and material.
All flanges are manufactured in accordance with industryaccepted standards. Awwa flange standards awwa flange standards differ from ansi american national standards institute and asme american society of mechanical engineers certifications in a variety of ways, the most important being their specificity. Jis flanges 2 kgcm2 blind slipon pipe inch mm pipe d do t c holes. Standards organization specification so they can be mated to other manufactur ers iso flanges. Flanges covered by this norsok standard shall be made from forgings, forged bars, castings and for bl and lb flanges only plates. Vacuum flanges several vacuum flange standards exist with. As already described before, the most used flange types acc. En 10921 flanges specifications dimensions of pn 16. A sample flange shown below will be calculated using asme appendix 2 methods and by finite element analysis fea to. For wn flanges, the manufacture shall be from forgings or forged bars. Realizziamo flange piane libere per cartelle a collarino filettare cieche i materiali impiegati sono. The 1996 edition allowed flanges marked with more than one material grade or specification, revised flange face finish requirements, revised pressuretemperature ratings for several material. Carbon steel pipe flanges dimensions and weights atlas steels.
This flange information does not necessarily apply to valves and other pipeline equipment which are often designed and manufactured to accommodate multiple flange standards. Home flange standard en flange standard flange masses weights according to standard en 10921. We offer nw kf, iso, cf, asa, wire seal and chain clamp style flanges and fittings to fit almost every application. Mss standards mss flange standards were adopted by american national standards institute. However, despite being referred to extensively by engineers, flange manufacturers and pipe fitting suppliers the ansi b16. We offer en standard flange, pipe tee, and socket weld elbow. Slip on flanges to din 2576 pn10, pn16, pn40, pn64, pn100 made from plate or forged. Jis flange, din flange, ansi flange, catalog, flange. All pipe plugs must be blocked or anchored adequately against a force equal to the head pressure times the crosssectional area of the pipe. Several vacuum flange standards exist with differences in ultimate attainable pressure, size, and ease of attachment. Asme vessel code calculations finite element analysis fea solid modeling drafting canadian registration number crn assistance.
Success in meeting required standards in price and delivery. Sizes nps 12 through 212 are same as class 1500 flanges. Flange standards the most commonly referred to flange standard in the oil and gas industry is arguably ansi b16. Flange type bl and lb can be manufactured from plate materials. Flanges are standardized according publications from. Acciaio al carbonio astm a105 c22,8 rst37,2, acciaio inossidabile astm a182 f304 f316l. Flanges and fittings in order to address the vacuum industries requirements, alcatel offers a large range of accessories based on the 3 most popular standards used in vacuum technology. Flange comparison table standard dimensions mm nb mm name rating od pcd bolts dia. Iso flanges are made from argon oxygen decarburization aod 304 stainless steel. A draft standard is listed in this section under the ansiaccredited standards developer asd. Plate weld flange is used in fuel and water pipelines. Compliance with the applicable standardized flange and flanged fitting dimensions is voluntary but ensures uniformity so that flanged valves from one manufacturer will bolt to flanges from another. Steel pipe flange standards china hebei haihao flange.
Success in expanding industry wide acceptance of the plate flange. Flange to the old din standard are compatible to the new din en 10921. Following approval by the standards committee and asme, approval as an american national standard was given by ansi on june 12, 1990. Mss sp60 is the standard for connecting flange joint. Id branch flange rating rf rtj material type header. Haihao flange factory manufacture steel pipe flange according to international standards,such as ansiasme, api,din,en,bs4504,jis,gost,awwa,iso etc. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. This saves the costs of two flanges, the gasket, the stud bolts, the second weld, the cost of ndt for the second weld, etc. These valves are covered under ansi standard 294 with all types of check valves being included such as buttweld, wafer, lug and flanged. In terms of the overall concept presented for the sealed flange, simulation evidence takes on a central significance.
Our high quality products are offered at competitive prices, welcome. Never use an inflatable plug when its failure could cause injury or catastrophic damage or as the only means of protection for personnel working. It comprises flanges with din origin and pndn designations dn classification being dependent on pn. This standard covers pressuretemperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges. Welding neck flange, slip on flange, socket weld flange, lap joint flange, threaded flange and blind flange.
Success in promoting this high quality alternative to cast or forged flanges. This material is certified to meet astm240 and has less than 0. Slip on weld flange is ideal for connection of steel pipes with nominal pressure less than 2. 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. Shengsenyuan is china en standard flange manufacturer. Bored and blank flanges norcal products manufactures a full line of flanges, fittings and adapters for vacuum applications. In addition to the listed vacuum flanges there are numerous other flange standards which are used, for example, in industrial and process engineering, but are not as widespread in vacuum technology. Consult relevant manufacturers data for information on its products. Ansi 600, 900, 1500 flange thickness does not include raised face. A wide variety of jis standard flange options are available to you, such as ansi, asme, and din. For the calculation of your flanged connections we can offer analytical procedures according to en 15911 or kta 3211. Flange type typ as in en 10921 01 plate slipon flanges for welding hubbed threaded flanges 02 loose plate flanges with weldon plate collar 21 integral flanges. Metallic flanges for waterworks purposes asnzs 4087.
Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum the design principles of iso and kf seals are identical. Din flanges summary chart rated pressure in bar 1 bar 14. It was approved on behalf of the council of standards australia on 15 march 2011 and on behalf of the council of standards new zealand on may 2011. Dimensions for class 300 flanges the following charts are for. Dinen 16mo3, x12crmo91, 12crmo195, crmo45, 10crmo910. To order a reducing flange, state the smaller size first, then the outside diameter of the larger size. Stainless processing introduces the flange industry to success. Plastics pipes and fittings peel decohesion test for polyethylene pe electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm amendment 1. Tested and certified to meet the specifications of the american national standards institute, ansi class flanges carry the organizations seal of approval for the. For d1 dimensions see document flange facing according to.
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. About 1% of these are shaft couplings, 0% are transmission chains, and 21% are flanges. Tutte le nostre flange rispettano le normative europee en italiane uni tedesche din americane ansi. For if and ri flanges the manufacture shall be from forgings or castings. Flange calculations according to en 15911 and kta 3211. In this roughness window both standards are fulfilled. Isokf flanges and fittings isok flanges and fittings cf flanges and fittings for each standard, alcatel offers the normalized nominal diameters. Operating instructions flanges according to din en. Flanges are standardized according publications from organizations like asme, mss, api and others.
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