A socket weld flange is a type of flange that is used to join pipes. It is a Permanent joint that is created by welding the pipe into a socket in the flange.

STANDARD | ANSI/ASME B16.5
| Socket Weld Flange | |
|---|---|
| Sizes | 1/2” to 24” |
| Class | 150, 300, 400, 600 900, 1500, 2500 Lbs. |
| Types | RF, FF, RTJ |
| Material | Carbon steel, Alloy Steel, Stainless steel, Duplex |