ASME B16.47 Class 300 Series A Blind Flanges
-
- All dimensions are in inches
- These flanges will be furnished with a 1/16″ raised face unless otherwise specified.
(Size Chart)
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Minimum Thickness (T) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 26 | 38.25 | 34.50 | 29.50 | 28 | 1.75 | 3.31 | 1079 |
| 28 | 40.75 | 37.00 | 31.50 | 28 | 1.75 | 3.56 | 1315 |
| 30 | 43.00 | 39.25 | 33.75 | 28 | 1.88 | 3.75 | 1545 |
| 32 | 45.25 | 41.50 | 36.00 | 28 | 2.00 | 3.94 | 1795 |
| 34 | 47.50 | 43.50 | 38.00 | 28 | 2.00 | 4.12 | 2068 |
| 36 | 50.00 | 46.00 | 40.25 | 32 | 2.12 | 4.38 | 2435 |
| 38 | 46.00 | 43.00 | 40.50 | 32 | 1.62 | 4.25 | 2001 |
| 40 | 48.75 | 45.50 | 42.75 | 32 | 1.75 | 4.50 | 2380 |
| 42 | 50.75 | 47.50 | 44.75 | 32 | 1.75 | 4.69 | 2689 |
| 44 | 53.25 | 49.75 | 47.00 | 32 | 1.88 | 4.88 | 3079 |
| 46 | 55.75 | 52.00 | 49.00 | 28 | 2.00 | 5.06 | 3500 |
| 48 | 57.75 | 54.00 | 51.25 | 32 | 2.00 | 5.25 | 3896 |
| 50 | 60.25 | 56.25 | 53.50 | 32 | 2.12 | 5.50 | 4442 |
| 52 | 62.25 | 58.25 | 55.50 | 32 | 2.12 | 5.69 | 4906 |
| 54 | 65.25 | 61.00 | 57.75 | 28 | 2.38 | 6.00 | 5684 |
| 56 | 67.25 | 63.00 | 59.75 | 28 | 2.38 | 6.06 | 6099 |
| 58 | 69.25 | 65.00 | 62.00 | 32 | 2.38 | 6.25 | 6669 |
| 60 | 71.25 | 67.00 | 64.00 | 32 | 2.38 | 6.44 | 7274 |