Socket Weld Flange Dimensions - ASME B16.5 Standards

Socket weld flanges are essential piping components designed for small-diameter, high-pressure applications in industrial piping systems. These flanges feature a recessed socket where the pipe is inserted and welded around the outer diameter, providing superior strength and leak-tight connections. Manufactured according to ASME B16.5 standards, socket weld flanges are available in pressure classes ranging from 150 to 1500, with sizes typically limited to NPS 3 inches and below.

The dimensional specifications for socket weld flanges include critical measurements such as outside diameter, inside diameter, bolt circle diameter, thickness, and bolt hole requirements. Proper tolerances as defined by ASME B16.5 ensure compatibility with mating components and reliable performance in demanding applications. Socket weld flanges are commonly used in petrochemical, chemical processing, and oil & gas industries where high-pressure integrity is paramount.

These flanges offer approximately 50% greater fatigue strength compared to slip-on flanges while maintaining equivalent static strength. The welding process requires specific bottoming clearance to reduce residual stress during weld solidification. Below you'll find comprehensive dimensional charts, weight tables, and technical specifications for various pressure classes to assist engineers and procurement professionals in proper flange selection and specification.