ASME B16 Dimensional Codes

Piping component standard developed by the American Society of Mechanical
Engineers or the American National Standards Institute (ANSI)

B16.1    Cast Iron Pipe Flanges and Flanged Fittings
B16.3    Malleable Iron Threaded Fittings, Class 150 and 300
B16.4    Cast Iron Threaded Fittings, Classes 125 and 250
B16.5    Pipe Flanges and Flanged Fittings
B16.9    Factory Made Wrought Steel Buttwelding Fittings
B16.10  Face to Face and End to End Dimensions of Valves
B16.11  Forged Fittings, Socket Welding and Threaded
B16.12  Cast Iron Threaded Drainage Fittings
B16.14  Ferrous Pipe Plugs, Bushings and Locknuts with Pipe Threads
B16.15  Cast Bronze Threaded Fittings Class 125 and 250
B16.18  Cast Copper Alloy Solder Joint Pressure Fittings
B16.20  Ring Joint Gaskets and Grooves for Steel Pipe Flanges
B16.21  Nonmetallic Flat Gaskets for Pipe Flanges
B16.22  Wrought Copper and Copper Alloy Solder Joint Pressure Fittings
B16.23  Cast Copper Alloy Solder Joint Drainage Fittings – DWV
B16.24  Cast Copper Alloy Pipe Flanges and Flanged Fittings Class 150, 300,
               400,600, 900, 1500 and 2500
B16.25  Buttwelding Ends
B16.26  Cast Copper Alloy Fittings for Flared Copper Tubes
B16.28  Wrought Steel Buttwelding Short Radius Elbows and Returns
B16.29  wrought Copper and Wrought Copper Alloy Solder Joint Drainage
              Fittings – DWV
B16.32  Cast Copper Alloy Solder Joint Fittings for Sovent Drainage Systems
B16.33  Manually Operated Metallic Gas Valves for Use in Gas Piping systems
               Up to 125 psig (sizes ½ through 2)
B16.34  Valves – Flanged, Threaded and Welding End
B16.36  Orifice Flanges
B16.37  Hydrostatic Testing of Control Valves
B16.38  Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 ½
              to 12, 125 psig maximum)
B16.39 Malleable Iron Threaded Pipe Unions, Classes 1150, 250 and 300
B16.40 Manually Operated Thermoplastic Gs Shutoffs and Valves in Gas
              Distribution Systems
B16.42  Ductile Iron Pipe Flanges and Flanged Fittings, Class 150 and 300
B16.47  Large Diameter Steel Flanges (NPS 26 through NPS 60)