Weld-neck flanges provide a smoother stress transition and are widely selected for demanding pressure, temperature and cyclic service.
Slip-on flanges can simplify fit-up but their use depends on the piping class and project rules.
Key points
- WNRF: weld neck raised face
- SORF: slip-on raised face
- Weld details and bore must be specified
- Selection follows design and piping class