Blind Raised Face Flange
ANSI / ASME / ASA B16.5 – Class 150 Blind Raised Face Flanges Dimensions
| Nominal Pipe Size (Inch) |
Pipe OD (mm) |
Outside Diameter A (mm) |
Flange Thickness C (mm) |
Raised Face Diameter G (mm) |
No. of Bolt Holes |
Bolt Hole Dia (mm) |
Bolt Circle Diameter J (mm) |
Weight (kg) |
| 1/2" | 21.30 | 88.90 | 11.20 | 35.10 | 4 | 15.70 | 60.45 | 0.42 |
| 3/4" | 26.70 | 98.60 | 12.70 | 42.90 | 4 | 15.70 | 69.85 | 0.61 |
| 1" | 33.40 | 108.00 | 14.20 | 50.80 | 4 | 15.70 | 79.25 | 0.86 |
| 1¼" | 42.20 | 117.30 | 15.70 | 63.50 | 4 | 15.70 | 88.90 | 1.17 |
| 1½" | 48.30 | 127.00 | 17.50 | 73.15 | 4 | 15.70 | 98.60 | 1.53 |
| 2" | 60.30 | 152.40 | 19.10 | 91.90 | 4 | 19.10 | 120.70 | 2.42 |
| 2½" | 73.00 | 177.80 | 22.40 | 104.60 | 4 | 19.10 | 139.70 | 3.94 |
| 3" | 88.90 | 190.50 | 23.90 | 127.00 | 4 | 19.10 | 152.40 | 4.93 |
| 3½" | 101.60 | 215.90 | 23.90 | 139.70 | 8 | 19.10 | 177.80 | 6.17 |
| 4" | 114.30 | 228.60 | 23.90 | 157.20 | 8 | 19.10 | 190.50 | 7.00 |
| 5" | 141.30 | 254.00 | 23.90 | 185.70 | 8 | 22.40 | 215.90 | 8.63 |
| 6" | 168.30 | 279.40 | 25.40 | 215.90 | 8 | 22.40 | 241.30 | 11.30 |
| 8" | 219.10 | 342.90 | 28.40 | 269.70 | 8 | 22.40 | 298.50 | 19.60 |
| 10" | 273.00 | 406.40 | 30.20 | 323.90 | 12 | 25.40 | 362.00 | 28.80 |
| 12" | 323.80 | 482.60 | 31.75 | 381.00 | 12 | 25.40 | 431.80 | 43.20 |
| 14" | 355.60 | 533.40 | 35.10 | 412.80 | 12 | 28.40 | 476.30 | 58.10 |
| 16" | 406.40 | 596.90 | 36.60 | 469.90 | 16 | 28.40 | 539.80 | 76.00 |
| 18" | 457.20 | 635.00 | 39.60 | 533.40 | 16 | 31.75 | 577.90 | 93.70 |
| 20" | 508.00 | 698.50 | 42.90 | 584.20 | 20 | 31.75 | 635.00 | 122.00 |
| 24" | 609.60 | 812.80 | 47.80 | 692.20 | 20 | 35.10 | 749.30 | 185.00 |
Blind Raised Face Flanges
ANSI / ASME / ASA B16.5 – Class 300 Blind Flange (BL-RF)
| Nominal Pipe Size (Inch) |
Pipe OD (mm) |
Outside Diameter A (mm) |
Flange Thickness C (mm) |
Raised Face Diameter G (mm) |
No. of Bolt Holes |
Bolt Hole Dia (mm) |
Bolt Circle Diameter J (mm) |
Weight (kg) |
| 1/2" | 21.30 | 95.20 | 14.20 | 35.10 | 4 | 15.70 | 66.55 | 0.64 |
| 3/4" | 26.70 | 117.30 | 15.70 | 42.90 | 4 | 19.00 | 82.50 | 1.11 |
| 1" | 33.40 | 123.90 | 17.50 | 50.80 | 4 | 19.00 | 88.90 | 1.39 |
| 1¼" | 42.20 | 133.30 | 19.00 | 63.50 | 4 | 19.00 | 98.50 | 1.79 |
| 1½" | 48.30 | 155.40 | 20.60 | 73.15 | 4 | 22.30 | 114.30 | 2.66 |
| 2" | 60.30 | 165.10 | 22.30 | 91.90 | 8 | 19.10 | 127.00 | 3.18 |
| 2½" | 73.00 | 190.50 | 25.40 | 104.60 | 8 | 22.30 | 149.30 | 4.85 |
| 3" | 88.90 | 209.50 | 28.40 | 127.00 | 8 | 22.30 | 168.10 | 6.81 |
| 3½" | 101.60 | 228.60 | 30.20 | 139.70 | 8 | 22.30 | 184.10 | 8.71 |
| 4" | 114.30 | 254.00 | 31.70 | 157.20 | 8 | 22.30 | 200.10 | 11.50 |
| 5" | 141.30 | 279.40 | 35.00 | 185.70 | 8 | 22.30 | 234.90 | 15.60 |
| 6" | 168.30 | 317.50 | 36.50 | 215.90 | 12 | 22.30 | 269.70 | 20.90 |
| 8" | 219.10 | 381.00 | 41.10 | 269.70 | 12 | 25.40 | 330.20 | 34.30 |
| 10" | 273.00 | 444.50 | 47.70 | 323.90 | 16 | 28.40 | 387.30 | 53.30 |
| 12" | 323.80 | 520.70 | 50.80 | 381.00 | 16 | 31.70 | 450.80 | 78.80 |
| 14" | 355.60 | 584.20 | 53.80 | 412.80 | 20 | 31.70 | 514.30 | 105.00 |
| 16" | 406.40 | 647.70 | 57.15 | 469.90 | 20 | 35.00 | 571.50 | 137.00 |
| 18" | 457.20 | 711.20 | 60.45 | 533.40 | 24 | 35.00 | 628.60 | 175.00 |
| 20" | 508.00 | 774.70 | 63.50 | 584.20 | 24 | 35.00 | 685.80 | 221.00 |
| 24" | 609.60 | 914.40 | 69.85 | 692.20 | 24 | 41.10 | 812.80 | 339.00 |
