The ASME B16.11 standard covers ratings,dimensions,tolerances,marking and material requirements for forged fittings(both socket-welding and threaded fittings).ASME B16.11 forged fittings are designated as Class 2000, 3000, and 6000 for threaded end fittings and Class 3000,6000,and 9000 for socket-weld end fittings.The nominal size of forged fittings from 1/2″ to 4″.

Types of forged steel pipe fittings:

Socket weld pipe fittings:

• Socket welding 45° elbow,socket welding 90° elbow
• Socket welding tee,socket welding lateral tee
• Socket welding cross
• Socket welding cap
• Socket welding full coupling,socket welding half coupling

Threaded pipe fittings:

• Threaded 45° elbow,threaded 90° elbow,threaded street elbow
• Threaded tee
• Threaded cross
• Threaded full coupling,threaded half coupling
• Threaded pipe cap
• Hex head bushing,flush bushing
• Hex head plug,square head plug,round head plug,bull plug

ASME B16.11 is to be used in conjunction with equipment described in other volumes of the ASME B16 series of standards as well as with other ASME standards,such as the boiler and pressure vessel code and the B31 piping codes.

Click here for PDF ANSI B16.11-2005- Forged Fittings, Socket-Welding and Threaded>>>

ASME-ANSI-B16.11-Forged-Fittings-Socket-Welding-and-Threaded.pdf

If you want to check the detail standard content, you can buy from following link:

https://www.asme.org/products/codes-standards/b1611-2011-forged-fittings-socketwelding-threaded