A socket weld flange, abbreviated as SWF, is similar to a slip-on flange, except only one fillet weld is made to the flange and pipe. Pipe is welded to socket weld flanges by inserting the pipe into the socket and backing the piping out between 1/16” and 1/8”. This is to prevent the expanding pipe on the inner side of the weld from expanding when headed and cracking the weld on the fitting.

Socket Weld Flange Standards

ASME Standards

• ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard

Socket Weld Flange Datasheet Types

Raised Face ANSI Class 150, B16.5 (in) ANSI Class 300, B16.5 (in) ANSI Class 400, B16.5 (in) ANSI Class 600, B16.5 (in) ANSI Class 900, B16.5 (in) ANSI Class 1500, B16.5 (in) ANSI Class 2500, B16.5 (in)

Socket Weld Flange Related Articles

• See bolt circle
• See bolt tightening procedure
• See flange facing, ASME B16.5
• See flange safety spray shield
• See flange
• See flange stamping
• See gasket
• See general flange standards
• See isolation gasket
• See raised face smooth finish
• See socket weld flange
• See spiral wound gasket