All dimensions are in "mm" unless noted otherwise.
Dimensions of Class 600 Lap Joint Flanges as per ASME B16.5.
| Nominal Pipe Size |
Outside diameter of flange (D) |
Thick of flange (B) |
Diameter of Hub at base (A) |
Length thru Hub (H) |
Dia of bore (ID) |
Fillet radius (r) |
No of holes |
Dia of holes (L) |
Dia of bolts |
Diam of bolt circle (K) |
Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 38.1 | 22.4 | 22.9 | 3 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 47.8 | 25.4 | 28.2 | 3 | 4 | 19.1 | 5/8 | 82.6 | 1 |
| 1 | 124 | 17.5 | 53.8 | 26.9 | 35.1 | 3 | 4 | 19.1 | 5/8 | 88.9 | 2 |
| 1-1/4 | 133.4 | 20.6 | 63.5 | 28.4 | 43.7 | 4.8 | 4 | 19.1 | 5/8 | 98.6 | 2 |
| 1-1/2 | 155.4 | 22.4 | 69.9 | 31.8 | 50 | 6.4 | 4 | 22.4 | 3/4 | 114.3 | 3 |
| 2 | 165.1 | 25.4 | 84.1 | 36.6 | 62.5 | 7.9 | 8 | 19.1 | 5/8 | 127 | 4 |
| 2-1/2 | 190.5 | 28.4 | 100.1 | 41.1 | 75.4 | 7.9 | 8 | 22.4 | 3/4 | 149.4 | 5 |
| 3 | 209.6 | 31.8 | 117.3 | 46 | 91.4 | 9.7 | 8 | 22.4 | 3/4 | 168.1 | 7 |
| 3-1/2 | 228.6 | 35.1 | 133.4 | 49.3 | 104.1 | 9.7 | 8 | 25.4 | 7/8 | 184.2 | 9 |
| 4 | 273.1 | 38.1 | 152.4 | 53.8 | 116.8 | 11.2 | 8 | 25.4 | 7/8 | 215.9 | 16 |
| 5 | 330.2 | 44.5 | 189 | 60.5 | 144.5 | 11.2 | 8 | 28.4 | 1 | 266.7 | 28 |
| 6 | 355.6 | 47.8 | 222.3 | 66.5 | 171.5 | 12.7 | 12 | 28.4 | 1 | 292.1 | 35 |
| 8 | 419.1 | 55.6 | 273.1 | 76.2 | 222.3 | 12.7 | 12 | 31.8 | 1-1/8 | 349.3 | 50 |
| 10 | 508 | 63.5 | 342.9 | 111.3 | 277.4 | 12.7 | 16 | 35.1 | 1-1/4 | 431.8 | 77 |
| 12 | 558.8 | 66.5 | 400.1 | 117.3 | 328.2 | 12.7 | 20 | 35.1 | 1-1/4 | 489 | 91 |
| 14 | 603.3 | 69.9 | 431.8 | 127 | 360.2 | 12.7 | 20 | 38.1 | 1-3/8 | 527.1 | 113 |
| 16 | 685.8 | 76.2 | 495.3 | 139.7 | 411.2 | 12.7 | 20 | 41.1 | 1-1/2 | 603.3 | 166 |
| 18 | 743 | 82.6 | 546.1 | 152.4 | 462.3 | 12.7 | 20 | 44.5 | 1-5/8 | 654.1 | 197 |
| 20 | 812.8 | 88.9 | 609.6 | 165.1 | 514.4 | 12.7 | 24 | 44.5 | 1-5/8 | 723.9 | 259 |
| 24 | 939.8 | 101.6 | 717.6 | 184.2 | 616 | 12.7 | 24 | 50.8 | 1-7/8 | 838.2 | 367 |