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
DIN
DIN Flanges
DIN flange dimensions remain on existing plants, spare lists, and mixed export packages. New European orders more often cite EN 1092-1. Quote DIN by the sheet number, PN, and facing on the RFQ or drawing.
Specification summary
| Standards | DIN |
|---|---|
| Size range | DN 15–600, larger on request |
| Pressure class | PN10, PN16, PN25, PN40 |
| Materials | C22.8, P250GH, 1.4301, 1.4404 |
| Facing | Raised face, Flat face |
Typical applications
- Chemical
- Industrial manufacturing
- Industrial maintenance
Flange types quoted to this standard
SO 
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
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
CF Custom Forged Flanges
- Standards
- ASME B16.5, ASME B16.47, DIN
- Size range
- Per drawing
- Pressure
- Per specification
- Materials
- ASTM A105, A350 LF2