Industry Standard Class 150 Series B Slip-On Bolting Matches
| Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Hub Diameter (X) | Minimum Fillet Radius (r) | Flange Bore (B) | Approximate Weight | Bolt Circle (C) | Number of Holes | Diameter of Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 30.94 mm | 1.62 mm | 28.00 mm | 2.62 mm | 26.94 mm | 0.38 mm | 26.25 mm | 85 lb | 29.31 mm | 36 | 0.88 mm |
| 28 | 32.94 mm | 1.75 mm | 30.00 mm | 2.75 mm | 28.94 mm | 0.38 mm | 28.25 mm | 97 lb | 31.31 mm | 40 | 0.88 mm |
| 30 | 34.94 mm | 1.75 mm | 32.00 mm | 2.75 mm | 31.00 mm | 0.38 mm | 30.25 mm | 103 lb | 33.31 mm | 44 | 0.88 mm |
| 32 | 37.06 mm | 1.81 mm | 34.00 mm | 2.81 mm | 33.06 mm | 0.38 mm | 32.25 mm | 125 lb | 35.44 mm | 48 | 0.88 mm |
| 34 | 39.56 mm | 1.94 mm | 36.25 mm | 2.94 mm | 35.12 mm | 0.38 mm | 34.25 mm | 165 lb | 37.69 mm | 40 | 1.00 mm |
| 36 | 41.62 mm | 2.06 mm | 38.25 mm | 3.06 mm | 37.19 mm | 0.38 mm | 36.25 mm | 186 lb | 39.75 mm | 44 | 1.00 mm |
| 38 | 44.25 mm | 2.12 mm | 40.25 mm | 3.12 mm | 39.25 mm | 0.38 mm | 38.25 mm | 227 lb | 42.12 mm | 40 | 1.12 mm |
| 40 | 46.25 mm | 2.19 mm | 42.50 mm | 3.19 mm | 41.31 mm | 0.38 mm | 40.25 mm | 245 lb | 44.12 mm | 44 | 1.12 mm |
| 42 | 48.25 mm | 2.31 mm | 44.50 mm | 3.31 mm | 43.38 mm | 0.44 mm | 42.25 mm | 269 lb | 46.12 mm | 48 | 1.12 mm |
| 44 | 50.25 mm | 2.38 mm | 46.50 mm | 3.38 mm | 45.38 mm | 0.44 mm | 44.25 mm | 288 lb | 48.12 mm | 52 | 1.12 mm |
| 46 | 52.81 mm | 2.44 mm | 48.62 mm | 3.44 mm | 47.44 mm | 0.44 mm | 46.25 mm | 343 lb | 50.56 mm | 40 | 1.25 mm |
| 48 | 54.81 mm | 2.56 mm | 50.75 mm | 3.56 mm | 49.50 mm | 0.44 mm | 48.25 mm | 373 lb | 52.56 mm | 44 | 1.25 mm |
| 50 | 56.81 mm | 2.69 mm | 52.75 mm | 3.69 mm | 51.50 mm | 0.44 mm | 50.25 mm | 403 lb | 54.56 mm | 48 | 1.25 mm |
| 52 | 58.81 mm | 2.75 mm | 54.75 mm | 3.75 mm | 53.56 mm | 0.44 mm | 52.25 mm | 426 lb | 56.56 mm | 52 | 1.25 mm |
| 54 | 61.00 mm | 2.81 mm | 56.75 mm | 3.81 mm | 55.62 mm | 0.44 mm | 54.25 mm | 469 lb | 58.75 mm | 56 | 1.25 mm |
| 56 | 63.00 mm | 2.88 mm | 58.75 mm | 3.88 mm | 57.69 mm | 0.56 mm | 56.25 mm | 492 lb | 60.75 mm | 60 | 1.25 mm |
| 58 | 65.94 mm | 2.94 mm | 60.75 mm | 3.94 mm | 59.69 mm | 0.56 mm | 58.25 mm | 602 lb | 63.44 mm | 48 | 1.38 mm |
| 60 | 67.94 mm | 3.00 mm | 63.00 mm | 4.00 mm | 61.81 mm | 0.56 mm | 60.25 mm | 634 lb | 65.44 mm | 52 | 1.38 mm |