ASME B16.47-2006 slip on flanges
Dimensions of Class 900 Series B Flanges
| Minimum Thickness of Flange, tf [Note (1)] | Drilling | |||||||||||
| Nominal Pipe Size | O.D. of Flange, O | WNF | Blind | Length Through Hub, Y | Diam. of Hub, X [Note (2)] | Hub Diam.Top, A [Note (3)] | Raised Face Diam., R | Diam.of Bolt Circle | No. of Bolt Holes | Diam.of Bolt Hole | Diam.of Bolt | Minimum Fillet Radius, r1 |
| 26 | 40.25 | 5.31 | 6.06 | 10.19 | 29.25 | 26 | 30 | 35.5 | 20 |  | 0.44 | |
| 28 | 43.5 | 5.81 | 6.56 | 10.88 | 31.38 | 28 | 32.25 | 38.25 | 20 | 0.5 | ||
| 30 | 46.5 | 6.12 | 6.93 | 11.38 | 33.5 | 30 | 34.5 | 40.75 | 20 | 0.5 | ||
| 32 | 48.75 | 6.31 | 7.31 | 11.94 | 35.75 | 32 | 36.5 | 43 | 20 | 0.5 | ||
| 34 | 51.75 | 6.75 | 7.68 | 12.56 | 37.88 | 34 | 39 | 45.5 | 20 | 0.56 | ||
| 36 | 53 | 6.81 | 7.94 | 12.81 | 40 | 36 | 40.5 | 47.25 | 24 | 0.56 | ||
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