Product FormDoc. RAS·FLANGE/01
ASME / Custom Flanges
Weld-neck, slip-on, blind and custom flanges in Class 150 through 2500 in nickel and specialty alloys.
Flange Capabilities
§01 — OverviewRAS Alloy manufactures standard and special flanges in heat and corrosion-resistant alloys. We supply to ASME B16.5/B16.47, API and customer drawings with full material certification and pressure-test documentation.
ASME B16.5ASME B16.47ASTM B564API 6ANACE MR0175
Key Capabilities
- Standard
- ASME B16.5 / B16.47
- Pressure class
- 150 – 2500
- Sizes
- NPS ½" – 48"
- Facing
- RF, RTJ, FF, tongue-and-groove
- Heat treatment
- Solution / anneal / age
Why RAS Alloy
§02 — Quality + TraceabilityCNC machined facing and bolt holes
Full material traceability and PMI report
Hydrostatic testing on request
Custom forgings and special geometries
NACE sour-service qualification
Sizes & Tolerances
§03 — Specifications| Type | Range | Note |
|---|---|---|
| Weld-neck | NPS ½" – 24" | Class 150 – 1500 |
| Slip-on | NPS ½" – 48" | Class 150 – 600 |
| Blind | NPS ½" – 48" | Class 150 – 2500 |
Tolerances
- OD / ID
- ASME B16.5 / B16.47
- Bolt circle
- ±0.5 mm typical
- Facing finish
- Ra 3.2 – 6.3 standard
Typical End Uses
§04 — ApplicationsPressure vessel nozzles
Pipeline and riser connections
Chemical reactor headers
Subsea manifolds
Heat exchanger channel covers
Technical Enquiry