are a set of standards published by the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI). These standards specify the dimensions, materials, and technical requirements for steel pipe flanges and flanged fittings.
Flanges are used to connect piping components, valves, and equipment to form a piping system. ASME/ANSI B16.5 Flanges are commonly used in high-pressure and high-temperature applications in industries such as oil and gas, petrochemical, and power generation.
The standards cover various flange types, such as weld neck, slip-on, threaded, blind, socket weld, and lap joint. They also specify the dimensions of flanges for nominal pipe sizes ranging from 1/2 inch to 24 inches and include pressure ratings from class 150 to class 2500.
ASME/ANSI B16.5 also includes material specifications for flanges made from carbon steel, stainless steel, and nickel alloys. Additionally, it provides guidelines for flange facing, bolt dimensions, and gasket materials.
The ASME/ANSI B16.5 standards are widely recognized and accepted in the industry and are frequently referenced in project specifications and procurement documents for piping systems.
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