All dimensions are in "mm" unless noted otherwise.
Dimensions of Class 600 RF Blind Flanges as per ASME B16.5.
| Nominal Pipe Size |
OD of Flange (D) |
Thickness of Flange (B) |
Dia of Raised Face (G) |
No of Bolt Holes |
Dia of Bolt Holes (L) |
Dia of Bolt (inches) |
Dia of Bolt Circle (K) |
Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 4 | 19.1 | 5/8 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 4 | 19.1 | 5/8 | 88.9 | 2 |
| 1-1/4 | 133.4 | 20.6 | 63.5 | 4 | 19.1 | 5/8 | 98.6 | 2 |
| 1-1/2 | 155.4 | 22.4 | 73.2 | 4 | 22.4 | 3/4 | 114.3 | 4 |
| 2 | 165.1 | 25.4 | 91.9 | 8 | 19.1 | 5/8 | 127 | 5 |
| 2-1/2 | 190.5 | 28.4 | 104.6 | 8 | 22.4 | 3/4 | 149.4 | 7 |
| 3 | 209.6 | 31.8 | 127 | 8 | 22.4 | 3/4 | 168.1 | 9 |
| 3-1/2 | 228.6 | 35.1 | 139.7 | 8 | 25.4 | 7/8 | 184.2 | 13 |
| 4 | 273.1 | 38.1 | 157.2 | 8 | 25.4 | 7/8 | 215.9 | 19 |
| 5 | 330.2 | 44.5 | 185.7 | 8 | 28.4 | 1 | 266.7 | 31 |
| 6 | 355.6 | 47.8 | 215.9 | 12 | 28.4 | 1 | 292.1 | 39 |
| 8 | 419.1 | 55.6 | 269.7 | 12 | 31.8 | 1-1/8 | 349.3 | 64 |
| 10 | 508 | 63.5 | 323.9 | 16 | 35.1 | 1-1/4 | 431.8 | 104 |
| 12 | 558.8 | 66.5 | 381 | 20 | 35.1 | 1-1/4 | 489 | 134 |
| 14 | 603.3 | 69.9 | 412.8 | 20 | 38.1 | 1-3/8 | 527.1 | 161 |
| 16 | 685.8 | 76.2 | 469.9 | 20 | 41.1 | 1-1/2 | 603.3 | 225 |
| 18 | 743 | 82.6 | 533.4 | 20 | 44.5 | 1-5/8 | 654.1 | 286 |
| 20 | 812.8 | 88.9 | 584.2 | 24 | 44.5 | 1-5/8 | 723.9 | 367 |
| 24 | 939.8 | 101.6 | 692.2 | 24 | 50.8 | 1-7/8 | 838.2 | 567 |