Pipe Flange Standards

on 21 September 2024. Posted in Pipe Flange

ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250
ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
ASME B16.20 - Ring Joint Gaskets and Grooves for Steel Pipe Flanges
ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges
ASME B16.24 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500
ASME B16.34 - Large Diameter Steel Flanges (NPS 26 through NPS 60)
ASME B16.36 - Orifice Flanges
ASME B16.42 - Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300
ASME B16.47 - Large Diameter Steel Flanges (NPS 26 Through NPS 60)

ASTM A105 - Specification for Carbon Steel Forgings for Piping Applications
ASTM A182 - Specification for Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service
ASTM A193 - Specification for Alloy Steel and Stainless Steel Bolting Materials for High Temperature Service
ASTM A194 - Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service
ASTM A694 - Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
ASTM A707 - Specification for Flanges, Forged, Carbon and Allow Steel for Low Temperature Service

AWWA C115 - Standard for Flanged Ductile Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges

MSS SP-6 - Standard Finishes for Contact Faces Pipe Flanges and Connecting End Flanges of Valves and Fittings
MSS SP-9 - Spot Facing for Bronze, Iron and Steel Flanges
MSS SP-25 - Standard Marking Systems for Valves, Fittings, Flanges, and Unions
MSS SP-44 - Steel Pipeline Flanges
MSS SP-53 - Quality Standards for Steel Castings and Forgings for Valves, Flanges and Fittings and Other Piping Components - Magnetic Particle
MSS SP-54 - Quality Standards for Steel Castings and for Valves, Flanges and Fittings and Other Piping Components - Radiographic
MSS SP-55 - Quality Standards for Steel Castings and for Valves, Flanges and Fittings and Other Piping Components - Visual
MSS SP-75 - High Test Wrought Butt Welding Fittings
MSS SP-106 - Cast Copper Alloy Flanges and Flanged Fittings Class 125,150, and 300
ASME B16.5 and ASME B16.47 cover pipe flanges up to NPS 60 (B16.5 from 1/2" to 24" and B16.47 from 26" to 60"). ANSI B16.47 covers two series of flanges, Series A is equal to MSS SP-44-44, and Series B is equal to API 605 (API 605 has been canclled).

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