A long weld neck flange is a type of flange that has a long, tapered neck that gradually meets the wall thickness of the pipe or fitting.
STANDARD | ANSI/ASME B16.5
| Long Weld Neck 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 |