A lap joint flange is a type of flange that is used to connect pipes in a piping system. It is a two-part assembly, consisting of a stub end and a lap joint ring flange.

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