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Flange manufacturing standards

There are several manufacturing standards for flanges, each of which specifies the dimensions, materials, and testing requirements for flanges.

MSS SP-44 Flange Specification

MSS SP-44

MSS SP-44 refers to the steel pipeline flanges specifications covers pressure-temperature ratings, materials...
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ASME B16.5 Flange and Flanged Fittings Specification

ASME B16.5

ASME B16.5 is the most common use standard specification for manufacturing cast and forged steel pipe flange and flanged fittings.
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ASTM A694 Standard specification

ASTM A694

ASTM A694 is the standard specification for carbon and alloy steel forgings for pipe flanges, fittings, valves, and parts for high-pressure transmission service which are manufactured for use with high-strength transmission-service pipe.
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Forged flanges

Forged Flanges

Forged flanges are defined as a plate type device, normally round, that is attached to the end of a pipe, fitting, valve or other object to facilitate the assembly and disassembly of a piping system.
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