Issuing body
ASME
Latest edition
2020 Edition
Region
USA, Global
Equipment items
5
Scope
Flange dimensions, ratings, materials and tolerances for NPS 1/2–24, Class 150–2500.
Key requirements (8)
- Pipe flanges & flanged fittings for NPS 1/2 to 24.
- Pressure classes: 150, 300, 400, 600, 900, 1500, 2500.
- Class 150 CS: 285 psig at 100 °F, 200 psig at 400 °F.
- Class 300 CS: 740 psig at 100 °F, 555 psig at 700 °F.
- Flange types: weld neck, slip-on, socket weld, threaded, lap joint, blind.
- Facing types: raised face (RF), ring-type joint (RTJ), flat face (FF).
- Bore matching: weld neck bore selected to match pipe schedule.
- Hydrotest: per pressure class temperature/pressure rating chart.
Related standards (3)
Applied to 5 equipment items
Piping & Fittings
Materials, Welding & Coatings