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
Custom forged flanges follow the buyer drawing: non-standard OD, thickness, drilling, facing, marking, coating, and test scope. Use this page when the standard weld-neck or blind catalog does not match the project spec.
- Standards
- ASME B16.5, ASME B16.47, DIN, EN 1092-1, Buyer drawing
- Size range
- Per drawing
- Pressure class
- Per specification
- Materials
- ASTM A105, A350 LF2, A182 F304/F316, Alloy steel
- Facing
- RF, FF, RTJ, Per drawing
Specification summary
| Standards | ASME B16.5, ASME B16.47, DIN, EN 1092-1, Buyer drawing |
|---|---|
| Size range | Per drawing |
| Pressure class | Per specification |
| Materials | ASTM A105, A350 LF2, A182 F304/F316, Alloy steel |
| Facing | RF, FF, RTJ, Per drawing |
Typical applications
- OEM equipment interfaces
- Project specials and replacements
- Non-standard drilling and thickness
Manufacturing
Forging, heat treatment, CNC machining, drilling, marking, coating, PMI/UT/MT/hardness, and export packing are quoted from the drawing and inspection list.
Inspection
Dimensional inspection, PMI, UT, MT, hardness testing, and material traceability.
Related flange types
WN 
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
LJ Lap Joint Flanges
- Standards
- ASME B16.5, ANSI
- Size range
- NPS 1/2–24
- Pressure
- Class 150, Class 300
- Materials
- ASTM A105, A182 F304/F316