The finish of contact faces shall conform to the requirements of asme. Our company offers a wide range of flanges like pl, sw, bl, wn,so,lj, asme ansi b16. Flange dimensions and material group from asme b16. The following section is in order by pressure class due to the overlapping dimensions of some standards.
Asme american society of mechanical engineers section viii division 1 bpv code for pressure vessel 3. 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. Tested and certified according to the research and standards of the american society of mechanical engineers, these mechanical assemblies, systems, and structures bear the weight of the toughest jobs and highest expectations. The standards committee that approved the code or standard was balanced to. Asme is the registered trademark of the american society of mechanical. Pressure ratings for awwa flanges range from the class b flange rated at 86 psi to the class f flange rated at 300 psi. Following approvals by the standards committee and asme, approval for the 1988 edition was granted by the american national standards institute on february 24, 1988.
The flanges are available in different versions according to the following standards. This standard covers pressuretemperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flange and flanged fittings. These flanges are highly durable, corrosion resistant and reliable. Class 150 flanges except lap joint will be furnished with 0. This organization also develops standards related to flanges made from malleable iron. Asme, the heating and piping contractors national association. 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. This standard for classes 25, 125, 250 cast iron pipe flanges and flanged fittings covers. Standard marking system for valves, fittings, flanges, and. Such markings may be shown on the body, on an attached plate, or as otherwise specified. Sizes nps 12 through 312 are same as class 600 flanges. Asme is a notforprofit membership organization that. The awwa c20701 standard describes two types of slipon flanges, ring type and hub type that may be used interchangeably if the dimensions given in the standard are used. Api 5791asme ffs1 fitnessforservice three standards from the b1 series on screw threads nine standards from the b16 series on pipe flanges and fittings four standards from the b18 series on hex bolts b36.
Gray iron pipe flanges and flanged fittings cast iron flanges, classes 25, 125 and 250 asme b 16. Weights are based on manufacturers data and are approximate. Carbon steel pipe, fittings and flanges atlas steels. Asme american society of mechanical engineers ansi american national standard institute b 1.
Asmes boiler and pressure vessel code bpvc 20 pressure vessels, continued division 2. Flanges and bolt dimensions class 150 to 2500 asme ansi b16. For example, a cast iron asme flange is built to one set of standards, while a steel asme flange is designed to meet a different set of requirements. Asme is a notforprofit membership organization that enables collaboration, knowledge sharing, career enrichment, and. Din flanges en flanges asme flanges jis flanges german national standards institute european standards america society of mechanical engineers japanese industrial standard din 2527 din en 10921. Asme procedures and policies, which precludes the issuance of interpretations by individuals. Reducing flanges are available in all types and pressures. Our range of flanges finds application in industries like engineering, construction, chemical, oil field and power plant.
Operating instructions flanges according to din en asme. Standard marking system for valves, fittings, flanges, and unions. Pdf flanges and bolt dimensions class 150 to 2500 asme. Pdf asme b16 5 20 pipe flanges and flanged fittings nps 1. A a standard code name standard name ansi a126 grey iron castings for valves flanges and pipe fittings nsi a181 standard specifications for forged or rolled steel pipe flanged forged fittings and valves and parts. Flat face flanges may be provided at full thickness, c, or with raised face removed the latter is nonstandard. Pipe flanges and flanged fittings standards for engineers worldwide asme b16. To order a reducing flange, state the smaller size first, then the outside diameter of the larger size. Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests. Flanges are standardized according publications from organizations like asme, mss, api and others. It specifies design requirements, materials, pressuretemperature ratings, dimensions, wall thickness and manufacturing requirements. Asme certified flanges the stamp of asme certification denotes high performance capabilities for engineered components around the world. Flanges may be cast, forged, or plate for blind flanges only materials, as listed in table 1a.
Din german national standards institute din 2501 en european standard en 10921 asme american society of mechanical engineers ansi b 16. With the everincreasing industrialization, lack of interchangeability also became a problem. Flange weights, dimensions and working pressures prochem. Flange dimensions are determined by the pipe size and the pressure class required for the application. L005 compact flanged connections edition 2, may 2006. This norsok standard is developed to provide an industry standard for a cfc which is an alternative to conventional flanges as specified in asme standards, european standard and international standard, with reduced weight and smaller overall dimensions. The asme american society of mechanical engineers asme b16 standards cover pipes and fittings in cast iron, cast bronze, wrought copper and steel. May 02, 2006 l005 compact flanged connections edition 2, may 2006.
Din flanges en flanges asme flanges jis flanges german national standards institute european standards america society of mechanical engineers. Pipe flanges that are made to standards called out by asme b16. Boltport manufacturers asme standard fasteners in full range of material grades and specifications. Requirements and recommendations regarding bolting and gaskets are also included. Bolted flanges, metals, flanges, algorithms, asme standards, design, manufacturing, pressure vessels, stress analysis engineering effects of scatter in bolt preload of pipe flange connections with gaskets on sealing performance. Engineering standards manual pd342 chapter 17 pressure safety section d20b31. Flange to the old din standard are compatible to the new din en 10921. From the very founding of the american society of mechanical engineers asme international in 1880, discussions were held on standards for shop drawing symbols, pulleys, and line shafting, machine screws, key seats, and drawing boards. Engineering standards manual std342100 chapter 17pressure safety section ref references rev. Our company offers a wide range of flanges like pl, sw, bl, wn,so,lj, asmeansi b16. Process valve standards australian pipeline valve asme rated valves conform to ansiasme b16. They are typically made from forged materials and have machined surfaces. Volumes pressure vessels and piping conference asme. Asme standard bolts, screws, nuts, washers, studs and other fasteners in metric and imperial sizes.
The resulting 1939 edition contained standards for welding neck flanges com pleted in march 1937, 1,500lb flanges in the 14in. Asme maintains dozens of flange standards, and each refers to flanges made from different materials. Each specification further delineates flanges into pressure classes. The asme american society of mechanical engineers asmeansi b16 standards covers pipes and fittings in cast iron, cast bronze, wrought copper and steel. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise. Flange connections, flanges, design, asme standards, north sea, petroleum industry, valves comparison of leak rates predicted by rott constants with. Process valve standards australian pipeline valve asme rated valves conform to ansi asme b16. Ansi valve standards ansi the american national standards institute standardization and conformity assessment system. This standard only features ansiasme flanges asme b 16. Manufacturers may offer pumps rated beyond these nominal values. Flanges and bolt dimensions class 150 to 2500 asmeansi b16. Ansi, mss and api standards govern flange dimensions and tolerances.
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