ASME B16.47 Class 600 Series B Blind Flanges
| Nominal Pipe Size | Outside Diameter (O) | Maximum Thickness (T) | Raised Face Diameter (R) | Approximate Weight | Bolt Circle (C) | Number of Holes | Diameter of Holes |
|---|---|---|---|---|---|---|---|
| 26 | 35.00 mm | 4.38 mm | 28.62 mm | 1195 lb | 31.75 mm | 28 | 1.75 mm |
| 28 | 37.50 mm | 4.56 mm | 30.88 mm | 1427 lb | 34.00 mm | 28 | 1.88 mm |
| 30 | 40.25 mm | 5.00 mm | 33.12 mm | 1800 lb | 36.50 mm | 28 | 2.00 mm |
| 32 | 42.75 mm | 5.31 mm | 35.25 mm | 2160 lb | 38.75 mm | 28 | 2.12 mm |
| 34 | 45.75 mm | 5.68 mm | 37.50 mm | 2645 lb | 41.50 mm | 24 | 2.38 mm |
| 36 | 47.75 mm | 5.94 mm | 39.75 mm | 3013 lb | 43.50 mm | 28 | 2.38 mm |