Class 300 Lb Flange Ready Stock
300lb Blind Flange
300 Lb Pipe Flanges
300 Lb Rtj Flange
300 Lb Weld Neck Flange
300 Lb Lap Joint Flange
300 Lb Orifice Flange
300 Lb Raised Face Flange
300 Lb Orifice Flange
300 Lb Slip On Flange
300 Lb Reducing Flange
300 Lb Threaded Flange
| Normal pipe size | Outside dia. of flange | Minimum thickness of flange | Overall Length | Bolt Circle | No. and Size of Holes | O.D. of raised face | |||
| Welding neck | Slip-on & socket welding | Lap Joint | |||||||
| O | Q | Y | Diam. | No. | dia. | R | |||
| 1/2 | 95 | 14.3 | 52.4 | 22.2 | 22.2 | 666.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.4 | 4 | 19 | 43 |
| 1 | 124 | 17.5 | 61.9 | 27.0 | 27.0 | 89.0 | 4 | 19 | 51 |
| 1-1/4 | 133 | 19.1 | 65.1 | 27.0 | 27.0 | 98.5 | 4 | 19 | 64 |
| 1-1/2 | 156 | 20.7 | 68.3 | 30.2 | 30.2 | 114.5 | 4 | 22 | 73 |
| 2 | 165 | 22.3 | 69.8 | 33.3 | 33.3 | 127.0 | 8 | 19 | 92 |
| 2-1/2 | 190 | 25.4 | 76.2 | 38.1 | 38.1 | 149.0 | 8 | 22 | 105 |
| 3 | 210 | 28.6 | 79.4 | 42.9 | 42.9 | 168.0 | 8 | 22 | 127 |
| 4 | 254 | 318 | 85.7 | 47.6 | 47.6 | 200.0 | 8 | 22 | 157 |
| 5 | 279 | 35.0 | 98.4 | 50.8 | 50.8 | 235.0 | 8 | 22 | 186 |
| 6 | 313 | 36.6 | 98.4 | 52.4 | 52.4 | 270.0 | 12 | 22 | 216 |
| 6 | 381 | 413 | 111.1 | 61.9 | 91.9 | 330.0 | 12 | 25 | 270 |
| 10 | 444 | 47.7 | 117.5 | 66.7 | 95.3 | 387.5 | 16 | 29 | 324 |
| 12 | 521 | 50.8 | 130.2 | 73.0 | 101.6 | 451.0 | 16 | 32 | 381 |
| 14 | 584 | 54.0 | 142.9 | 76.2 | 111.1 | 514.5 | 20 | 32 | 413 |
| 16 | 648 | 57.2 | 146.0 | 82.6 | 120.7 | 571.5 | 20 | 35 | 470 |
| 18 | 711 | 60.4 | 158.8 | 88.9 | 130.2 | 628.5 | 24 | 35 | 533 |
| 20 | 775 | 63.5 | 161.9 | 95.2 | 139.7 | 686.0 | 24 | 35 | 584 |
| 24 | 914 | 69.9 | 168.3 | 106.4 | 152.4 | 843.0 | 24 | 41 | 692 |
