Which standard covers gray iron pipe flanges?

Which standard covers gray iron pipe flanges?

• 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 437 Standard for CPVC plastic pipe fittings

Answer: (A)

Gray iron pipe flanges are specified by ASME B16.1, which covers cast iron pipe flanges and flanged fittings, including gray iron. This standard defines the dimensions, bolt patterns, and pressure-rating guidelines specific to gray iron components. The other standards don’t apply to gray iron flanges: B16.5 is a broader flange standard focusing on materials like steel and other metals, not gray iron; B16.11 covers forged fittings rather than flanges; and ASTM F 437 is for CPVC plastic pipe fittings.

Gray iron pipe flanges are specified by ASME B16.1, which covers cast iron pipe flanges and flanged fittings, including gray iron. This standard defines the dimensions, bolt patterns, and pressure-rating guidelines specific to gray iron components. The other standards don’t apply to gray iron flanges: B16.5 is a broader flange standard focusing on materials like steel and other metals, not gray iron; B16.11 covers forged fittings rather than flanges; and ASTM F 437 is for CPVC plastic pipe fittings.