FITTINGS & FLANGES
Raised-face socket-weld flange
SW / Class 150 / RF
- Dimensional series
- ASME B16.5，Class 150
- Facing
- RF — raised face
- Connection form
- Stepped socket; fillet-weld connection
- Material selection
- Specify ASTM A105 or the required ASTM A182 grade
- Pressure–temperature rating
- Depends on material group and temperature; Class 150 is a class designation
Confirm configuration, price, quantity and lead time for each enquiry.
Class 150 RF — selected NPS size rows
Units: in
| NPS (in) | O — flange OD | T — body thickness | R — raised-face diameter | X — hub base diameter | Holes × diameter | Bolt circle | B — slip-on / socket entry | B₂ — standard bore | L — hub length | D — socket depth |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3.50 | 0.38 | 1.38 | 1.19 | 4 × 0.62 | 2.38 | 0.88 | 0.62 | 0.56 | 0.38 |
| 3/4 | 3.88 | 0.44 | 1.69 | 1.50 | 4 × 0.62 | 2.75 | 1.09 | 0.82 | 0.56 | 0.44 |
| 1 | 4.25 | 0.50 | 2.00 | 1.94 | 4 × 0.62 | 3.12 | 1.36 | 1.05 | 0.62 | 0.50 |
| 1 1/2 | 5.00 | 0.62 | 2.88 | 2.56 | 4 × 0.62 | 3.88 | 1.95 | 1.61 | 0.81 | 0.62 |
| 2 | 6.00 | 0.69 | 3.62 | 3.06 | 4 × 0.75 | 4.75 | 2.44 | 2.07 | 0.94 | 0.69 |
| 3 | 7.50 | 0.88 | 5.00 | 4.25 | 4 × 0.75 | 6.00 | 3.57 | 3.07 | 1.12 | 0.81 |
| 4 | 9.00 | 0.88 | 6.19 | 5.31 | 8 × 0.75 | 7.50 | 4.57 | 4.03 | 1.25 | 0.94 |
Dimensions are in inches. T and the length symbols follow the source cross-section; the raised face is shown separately as 1/16 in. B₂ is the source standard bore, not a universal bore for every pipe schedule. Confirm the ordered bore and material grade.
Specifications compiled from available product documents，Document page: 3。Dimensions, performance and suitability are subject to confirmed drawings and ordering documents.
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