A flange connection is a joint system, not a flange by itself. The joint normally includes two compatible flange faces, a selected gasket, bolts or studs, nuts, approved lubricant where specified, aligned piping or equipment, and a controlled...
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In an ASTM A105 vs ASME SA-105 inquiry, both designations relate to carbon steel forgings used for pressure-system piping components, but the governing publication and code context are different. ASTM publishes A105/A105M. ASME includes...
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A Vanstone flange is an industry term commonly used for a rotating backing flange fitted behind a flared, lapped, or otherwise formed pipe end. The rotating ring can simplify bolt-hole alignment because the flange is not rigidly fixed to the pipe...
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In the ANSI vs ASME comparison, ANSI and ASME have different roles. ANSI coordinates and accredits parts of the U.S. voluntary standards system and approves qualifying documents as American National Standards. ANSI does not develop the technical...
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ASME B16.1 flanges are gray iron pipe flanges and flanged fittings within the standard's stated Class 25, 125, and 250 scope. The standard covers more than bolt patterns. Its scope includes pressure-temperature ratings, materials, dimensions and...
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ASME B16.47 flanges are large-diameter steel pipe flanges covered within the standard's stated NPS and pressure-class scope. A usable purchase description must identify the standard edition required by the contract, nominal pipe size, rating...
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A blind flange closes a flanged opening without a center bore. It can terminate a line, close a vessel or valve connection, or provide an access point that can be opened later. Because the full pressure load acts on the solid plate, the correct standard,...
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A flange size chart is useful only when it identifies the dimensional standard, edition, nominal size, rating, flange type, and facing. There is no single universal chart for every flange. The same nominal pipe size can have different outside diameters,...
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To learn how to measure flange size, record several dimensions rather than relying on one diameter. The minimum useful set is flange outside diameter, bore or inside diameter, bolt-circle diameter, bolt-hole diameter, number of holes, flange thickness,...
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