Flange – Lap Joint, ANSI Class 2500, ASME B16.5, Flat Face (in)
- Dimensions and tolerances in accordance with ANSI/ASME B16.5 for sizes 1/2″ to 24″.
- Carbon steel forgings in accordance with ASTM A105.
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
- 1/4″ raised face is not included in dimension “C” and “M”.
| Pipe Size(NPS) | OutsideDiameter of Flange A | Thicknessof Flange C | DiameterOf Bore F | Diameterof Hub at Base J | Lengthof Hub M | Radius R | Numberof Bolt Holes | Diameterof Bolt Holes | BoltCircle Diameter P | Approx.Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 5 1/4 | 1 3/16 | 0.90 | 1 11/16 | 1 9/16 | 1/8 | 4 | 7/8 | 3 1/2 | 7 |
| 3/4 | 5 1/2 | 1 1/4 | 1.11 | 2 | 1 11/16 | 1/8 | 4 | 7/8 | 3 3/4 | 8 |
| 1 | 6 1/4 | 1 3/8 | 1.38 | 2 1/4 | 1 7/8 | 1/8 | 4 | 1 | 4 1/4 | 12 |
| 1 1/4 | 7 1/4 | 1 1/2 | 1.72 | 2 7/8 | 2 1/16 | 3/16 | 4 | 1 1/8 | 5 1/8 | 17 |
| 1 1/2 | 8 | 1 3/4 | 1.97 | 3 1/8 | 2 3/8 | 1/4 | 4 | 1 1/4 | 5 3/4 | 24 |
| 2 | 9 1/4 | 2 | 2.46 | 3 3/4 | 2 3/4 | 5/16 | 8 | 1 1/8 | 6 3/4 | 37 |
| 2 1/2 | 10 1/2 | 2 1/4 | 2.97 | 4 1/2 | 3 1/8 | 5/16 | 8 | 1 1/4 | 7 3/4 | 53 |
| 3 | 12 | 2 5/8 | 3.60 | 5 1/4 | 3 5/8 | 3/8 | 8 | 1 3/8 | 9 | 80 |
| 3 1/2 | - | - | - | - | - | - | - | - | - | - |
| 4 | 14 | 3 | 4.60 | 6 1/2 | 4 1/4 | 7/16 | 8 | 1 5/8 | 10 3/4 | 122 |
| 5 | 16 1/2 | 3 5/8 | 5.69 | 8 | 5 1/8 | 7/16 | 8 | 1 7/8 | 12 3/4 | 204 |
| 6 | 19 | 4 1/4 | 6.75 | 9 1/4 | 6 | 1/2 | 8 | 2 1/8 | 14 1/2 | 314 |
| 8 | 21 3/4 | 5 | 8.75 | 12 | 7 | 1/2 | 12 | 2 1/8 | 17 1/4 | 471 |
| 10 | 26 1/2 | 6 1/2 | 10.92 | 14 3/4 | 9 | 1/2 | 12 | 2 5/8 | 21 1/4 | 897 |
| 12 | 30 | 7 1/4 | 12.92 | 17 3/8 | 10 | 1/2 | 12 | 2 7/8 | 24 3/8 | 1262 |