ASME B16.5 flanges.
Specify the flange standard, size, drilling, facing and material for the mating installation.
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Final specifications, compatibility and availability are confirmed against your selected part and operating conditions.
Standard, nominal size and pressure class
Material grade and wall thickness
Facing, drilling and connection type
Drawing or dimensions of the mating connection
ASME B16.5 flange dimensions.
Flange drilling and dimensional references for the selected standard, nominal bore and class. Specify the flange construction, face, material grade and design temperature. A PN, class or table designation alone does not establish an allowable working pressure for every material and temperature. Blank dimensions are not confirmed available configurations.
| Nominal bore (mm) | Class / table designation | Flange outside diameter D (mm) | Flange thickness b (mm) | Raised-face diameter d2 (mm) | Raised-face height f (mm) | Bolt holes | Hole diameter d1 (mm) | Bolt size | Bolt circle PCD (mm) | Reference mass (kg) | Standard reference |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | CL 150 | 88.9 | 11.1 | 34.9 | 1.6 | 4 | 15.9 | M12 | 60.3 | 0.45 | ASME B16.5 |
| 15 | CL 300 | 95.2 | 14.3 | 34.9 | 1.6 | 4 | 15.9 | M12 | 66.7 | 0.91 | ASME B16.5 |
| 20 | CL 150 | 98.4 | 12.7 | 42.9 | 1.6 | 4 | 16 | M12 | 69.8 | 0.68 | ASME B16.5 |
| 20 | CL 300 | 117.5 | 15.9 | 42.9 | 1.6 | 4 | 19 | M16 | 82.5 | 1.25 | ASME B16.5 |
| 25 | CL 150 | 107.9 | 14.3 | 50.8 | 1.6 | 4 | 16 | M12 | 79.4 | 0.95 | ASME B16.5 |
| 25 | CL 300 | 123.8 | 17.5 | 50.8 | 1.6 | 4 | 19 | M16 | 66.7 | 1.36 | ASME B16.5 |
| 32 | CL 150 | 117.5 | 15.9 | 73.9 | 1.6 | 4 | 15.9 | M12 | 88.9 | 1.11 | ASME B16.5 |
| 32 | CL 300 | 133.3 | 19 | 63.5 | 1.6 | 4 | 19 | M16 | 98.4 | 2.04 | ASME B16.5 |
| 40 | CL 150 | 127 | 17.5 | 73 | 1.6 | 4 | 16 | M12 | 98.4 | 1.4 | ASME B16.5 |
| 40 | CL 300 | 155.6 | 20.6 | 73 | 1.6 | 4 | 18 | M16 | 114.3 | 2.81 | ASME B16.5 |
| 50 | 150lb | 152.4 | 19 | 92 | 1.6 | 4 | 19 | M16 | 120.6 | 2.3 | ASME B16.5 |
| 50 | 300lb | 165.1 | 22.2 | 92.1 | 1.6 | 8 | 19 | M16 | 127 | 3.13 | ASME B16.5 |
| 65 | 150lb | 177.8 | 22.2 | 104.8 | 1.6 | 4 | 19 | M16 | 139.7 | 3.82 | ASME B16.5 |
| 65 | 300lb | 190.5 | 25.4 | 104.8 | 1.6 | 8 | 22 | M20 | 149.2 | 4.54 | ASME B16.5 |
| 80 | 150lb | 190.5 | 23.8 | 127 | 1.6 | 4 | 19 | M16 | 152.4 | 4.08 | ASME B16.5 |
| 80 | 300lb | 209.5 | 28.6 | 127 | 1.6 | 8 | 22 | M20 | 168.3 | 6.12 | ASME B16.5 |
| 100 | 150lb | 228.6 | 23.8 | 157.2 | 1.6 | 8 | 19 | M16 | 190.5 | 5.94 | ASME B16.5 |
| 100 | 300lb | 254 | 31.7 | 157.2 | 1.6 | 8 | 22 | M20 | 200 | 9.53 | ASME B16.5 |
| 125 | 150lb | 254 | 23.8 | 185.7 | 1.6 | 8 | 22 | M20 | 215.9 | 6.25 | ASME B16.5 |
| 125 | 300lb | 279.4 | 34.9 | 185.7 | 1.6 | 8 | 22 | M20 | 234.9 | 12.7 | ASME B16.5 |
| 150 | 150lb | 279.4 | 25.4 | 215.9 | 1.6 | 8 | 22.2 | M20 | 241.3 | 8.16 | ASME B16.5 |
| 150 | 300lb | 317.5 | 36.5 | 215.9 | 1.6 | 12 | 22.2 | M20 | 269.9 | 16.33 | ASME B16.5 |
| 200 | 150lb | 342.9 | 28.6 | 269.9 | 1.6 | 8 | 22.2 | M20 | 298.4 | 12.7 | ASME B16.5 |
| 200 | 300lb | 381 | 41.3 | 269.9 | 1.6 | 12 | 22.2 | M20 | 330.2 | 25.4 | ASME B16.5 |
| 250 | 150lb | 406.4 | 30.2 | 323.8 | 1.6 | 12 | 25.4 | M24 | 361.9 | 17.24 | ASME B16.5 |
| 250 | 300lb | 444.5 | 47.6 | 323.8 | 1.6 | 16 | 31.7 | M30 | 387.3 | 35.38 | ASME B16.5 |
| 300 | 150lb | 482.6 | 31.7 | 381 | 1.6 | 12 | 25.4 | M20 | 431.8 | 27.22 | ASME B16.5 |
| 300 | 300lb | 520.7 | 50.8 | 381 | 1.6 | 16 | 31.7 | M30 | 450.8 | 50.8 | ASME B16.5 |
| 350 | 150lb | 533.4 | 34.9 | 412.8 | 1.6 | 12 | 28.6 | M24 | 476.2 | 35.71 | ASME B16.5 |
| 350 | 300lb | 584.2 | 54 | 412.8 | 1.6 | 20 | 31.7 | M30 | 514 | 75 | ASME B16.5 |
| 400 | 150lb | 596.9 | 36.5 | 470 | 1.6 | 16 | 28.6 | M24 | 539.7 | 45.09 | ASME B16.5 |
| 400 | 300lb | 647.7 | 57.1 | 470 | 1.6 | 20 | 34.9 | M30 | 571.5 | 101.6 | ASME B16.5 |
| 450 | 150lb | 635 | 39.7 | 533.4 | 1.6 | 16 | 31.7 | M30 | 577.8 | 52.62 | ASME B16.5 |
| 450 | 300lb | 711.2 | 60.3 | 533.4 | 1.6 | 24 | 34.9 | M30 | 628.65 | 126.1 | ASME B16.5 |
| 500 | 150lb | 698.5 | 42.9 | 584.2 | 1.6 | 20 | 31.7 | M30 | 635 | 65.32 | ASME B16.5 |
| 500 | 300lb | 774.7 | 63.5 | 584.2 | 1.6 | 24 | 34.9 | M30 | 685.8 | 150 | ASME B16.5 |
| 600 | 150lb | 812.8 | 47.6 | 692.1 | 1.6 | 20 | 34.9 | M30 | 749.3 | 91.63 | ASME B16.5 |
| 600 | 300lb | 914.4 | 69.8 | 692.1 | 1.6 | 24 | 38.1 | M36 | 812.8 | 222.26 | ASME B16.5 |