WN Weld Neck Flanges
- Standards
- ASME B16.5, ASME B16.47, ANSI
- Size range
- NPS 1/2–24 (B16.5); NPS 26–60 (B16.47)
- Pressure
- Class 150, Class 300, Class 600
- Materials
- ASTM A105, A350 LF2
EN 1092-1
EN 1092-1 Flanges
EN 1092-1 is the current European steel flange standard, specified by PN rating and type. It is the usual DACH and EU procurement call-out, replacing many older DIN sheet numbers on new projects.
Specification summary
| Standards | EN 1092-1 |
|---|---|
| Size range | DN 15–600, larger on request |
| Pressure class | PN10, PN16, PN25, PN40, PN63, PN100 |
| Materials | P250GH, 1.4301, 1.4404, A105 equivalent |
| Facing | Type B1 raised face, Type A flat face |
Typical applications
- Chemical
- Power
- Water
- Industrial manufacturing
Flange types quoted to this standard
WN 
SO Slip-On Flanges
- Standards
- ASME B16.5, ANSI, DIN
- Size range
- NPS 1/2–24; DN 15–600
- Pressure
- Class 150, Class 300, PN10
- Materials
- ASTM A105, A182 F304/F316
BL Blind Flanges
- Standards
- ASME B16.5, ASME B16.47, DIN
- Size range
- NPS 1/2–24 (B16.5); larger on request
- Pressure
- Class 150, Class 300, Class 600
- Materials
- ASTM A105, A350 LF2
CF Custom Forged Flanges
- Standards
- ASME B16.5, ASME B16.47, DIN
- Size range
- Per drawing
- Pressure
- Per specification
- Materials
- ASTM A105, A350 LF2