Which standard covers pipe flanges and flanged fittings?

Which standard covers pipe flanges and flanged fittings?

• A. ASME B16.1 Standard for gray iron pipe flanges
• B. ASME B16.5 Standard for pipe flanges and flanged fittings
• C. ASME B16.11 Standard for forged fittings, socket-welding and threaded
• D. ASTM F 438 Socket-type CPVC fittings

Answer: (B)

This question is about knowing which standard governs the dimensions and mating requirements for pipe flanges and their flanged fittings. ASME B16.5 is the standard that defines the dimensions, bolt patterns, tolerances, materials, and pressure–temperature ratings for pipe flanges and flanged fittings used in piping systems. It ensures compatibility between components from different manufacturers and covers common flange types (like weld neck, slip-on, blind) and flanged fittings (such as elbows, tees, reducers with flange connections). The other standards referenced cover different categories: gray iron flange work is addressed by a separate standard specific to gray iron flanges, forged fittings (socket-welded and threaded) are covered by another standard, and CPVC fittings are defined by a plastics-focused standard. So the standard that covers pipe flanges and flanged fittings is ASME B16.5.

This question is about knowing which standard governs the dimensions and mating requirements for pipe flanges and their flanged fittings. ASME B16.5 is the standard that defines the dimensions, bolt patterns, tolerances, materials, and pressure–temperature ratings for pipe flanges and flanged fittings used in piping systems. It ensures compatibility between components from different manufacturers and covers common flange types (like weld neck, slip-on, blind) and flanged fittings (such as elbows, tees, reducers with flange connections).

The other standards referenced cover different categories: gray iron flange work is addressed by a separate standard specific to gray iron flanges, forged fittings (socket-welded and threaded) are covered by another standard, and CPVC fittings are defined by a plastics-focused standard. So the standard that covers pipe flanges and flanged fittings is ASME B16.5.