| DN (inch) |
Dimension | ANSI B16.5 Flange Dimensional Sizes 3 to 10 inches Table Chart | ||||||||||||||
| 125 lbs 150 lbs |
300 lbs | 400 lbs | 600 lbs | 900 lbs | 1500 lbs | 2500 lbs | ||||||||||
| inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | |||
| 3 | A | 7 1/2 | 190.5 | 81/4 | 209.6 | 81/4 | 209.6 | 8 1/4 | 209.6 | 9 1/2 | 241 | 10 1/2 | 267 | 12 | 305 | |
| b | 15/16 | 23.8 | 1 1/8 | 28.6 | 11/4 | 31.8 | 1 1/4 | 31.8 | 1 1/2 | 38.1 | 1 7/8 | 47.6 | 2 5/8 | 66.7 | ||
| D2 | 5 | 127 | 5 | 127 | 5 | 127 | 5 | 127 | 5 | 127 | 5 | 127 | 5 | 127 | ||
| D1 | 6 | 152.4 | 6 5/8 | 168.3 | 6 5/8 | 168.3 | 6 5/8 | 168.3 | 71/2 | 190.5 | 8 | 203 | 9 | 228.6 | ||
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 | 25.4 | 1 1/4 | 31.8 | 1 3/8 | 34.9 | ||
| 3 1/2 | A | 8 1/2 | 215.9 | 9 | 228.6 | 9 | 228.6 | 9 | 228.6 | – | – | – | – | – | – | |
| b | 15/16 | 23.8 | 13/16 | 30.2 | 13/8 | 34.9 | 13/8 | 34.9 | – | – | – | – | – | – | ||
| D2 | 5 1/2 | 139.7 | 5 /2 | 139.7 | 5 1/2 | 139.7 | 5 1/2 | 139.7 | – | – | – | – | – | – | ||
| D1 | 7 | 177.8 | 7 1/4 | 184.2 | 7 1/4 | 184.2 | 7 1/4 | 184.2 | – | – | – | – | – | – | ||
| n | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | – | – | – | – | – | – | ||
| d | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | – | – | – | – | – | – | ||
| 4 | A | 9 | 228.6 | 10 | 254 | 10 | 254 | 10 3/4 | 273 | 11 1/2 | 292 | 12 1/4 | 311 | 14 | 356 | |
| b | 15/16 | 23.8 | 1 1/4 | 31.7 | 1 3/8 | 34.9 | 1 1/2 | 38.1 | 1 3/4 | 44.4 | 2 1/8 | 54 | 3 | 76.2 | ||
| D2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | 6 3/16 | 157.2 | ||
| D1 | 7 1/2 | 190 | 7 7/8 | 200 | 7 7/8 | 200 | 8 1/2 | 215.9 | 9 1/4 | 235 | 9 1/2 | 241 | 10 3/4 | 273 | ||
| n | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | 1 1/4 | 31.8 | 1 3/8 | 34.9 | 1 5/8 | 41.3 | ||
| 5 | A | 10 | 254 | 11 | 279.4 | 11 | 279.4 | 13 | 330.2 | 13 3/4 | 349 | 14 3/4 | 375 | 16 1/2 | 419 | |
| b | 1 5/16 | 23.8 | 13/8 | 34.9 | 1 1/2 | 38.1 | 1 3/4 | 44.4 | 2 | 50.8 | 2 7/8 | 73 | 3 5/8 | 92.1 | ||
| D2 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | 7 5/16 | 185.7 | ||
| D1 | 8 1/2 | 215.9 | 9 1/4 | 234.9 | 9 1/4 | 234.9 | 10 1/2 | 266.7 | 11 | 279 | 11 1/2 | 292 | 12 3/4 | 324 | ||
| n | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 7/8 | 22.2 | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 3/8 | 34.9 | 1 5/8 | 41.3 | 1 7/8 | 47.6 | ||
| 6 | A | 11 | 279 | 12 1/2 | 317.5 | 12 1/2 | 317.5 | 14 | 355.6 | 15 | 381 | 15 1/2 | 394 | 19 | 483 | |
| b | 1 | 25.4 | 17/16 | 36.5 | 1 5/8 | 41.3 | 1 7/8 | 47.6 | 2 3/16 | 55.6 | 3 1/4 | 82.6 | 4 1/4 | 108 | ||
| D2 | 8 1/2 | 216 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 8 1/2 | 216 | ||
| D1 | 9 1/2 | 241 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 11 1/2 | 292.1 | 12 1/2 | 318 | 12 1/2 | 318 | 14 1/2 | 368 | ||
| n | 8 | 8 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 8 | 8 | ||
| d | 7/8 | 22.2 | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | 1 1/2 | 38.1 | 2 1/8 | 54 | ||
| 8 | A | 13 1/2 | 342.9 | 15 | 381 | 15 | 381 | 16 1/2 | 419 | 18 1/2 | 470 | 19 | 482.6 | 21 3/4 | 552 | |
| b | 1 1/8 | 28.6 | 1 5/8 | 41.3 | 1 7/8 | 47.6 | 2 3/16 | 55.6 | 2 1/2 | 63.5 | 3 5/8 | 92.1 | 5 | 127 | ||
| D2 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | 10 5/8 | 269.9 | ||
| D1 | 11 3/4 | 298.4 | 13 | 330.2 | 13 | 330.2 | 13 3/4 | 349.2 | 15 1/2 | 394.2 | 15 1/2 | 394.2 | 17 1/4 | 438 | ||
| n | 8 | 8 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | ||
| d | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | 1 1/2 | 38.1 | 1 3/4 | 44.5 | 2 1/8 | 54 | ||
| 10 | A | 16 | 406.4 | 17 1/2 | 444.5 | 17 1/2 | 444.5 | 20 | 508 | 21 1/2 | 546 | 23 | 584 | 26 1/2 | 673 | |
| b | 1 3/16 | 30.2 | 1 7/8 | 47.6 | 2 1/8 | 54 | 2 1/2 | 63.5 | 2 3/4 | 69.8 | 4 1/4 | 108 | 6 1/2 | 165 | ||
| D2 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | 12 3/4 | 323.8 | ||
| D1 | 14 1/4 | 361.9 | 15 1/4 | 387.4 | 15 1/4 | 387.4 | 17 | 431.8 | 18 1/2 | 470 | 19 | 482.6 | 21 1/4 | 540 | ||
| n | 12 | 12 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 12 | 12 | 12 | 12 | ||
| d | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | 1 3/8 | 34.9 | 1 1/2 | 38.1 | 2 | 50.8 | 2 5/8 | 66.7 | ||
| Flange Weights by Pressure Class and Size | ||||||||||||||||||
| Pipe Size | 150 # | 300 # | 600 # | 900 # | 1500 # | 2500 # | ||||||||||||
| WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | |
| 1/2″ | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | SEE 1500 # WEIGHTS | 5 | 4 | 4 | 7 | 7 | 7 | ||
| 3/4″ | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | SEE 1500 # WEIGHTS | 6 | 5 | 6 | 8 | 8 | 8 | ||
| 1″ | 3 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | SEE 1500 # WEIGHTS | 9 | 8 | 8 | 12 | 11 | 11 | ||
| 1 1/2″ | 4 | 3 | 3 | 7 | 6 | 6 | 8 | 7 | 8 | SEE 1500 # WEIGHTS | 13 | 12 | 13 | 25 | 22 | 23 | ||
| 2″ | 6 | 5 | 5 | 9 | 7 | 8 | 12 | 9 | 10 | SEE 1500 # WEIGHTS | 25 | 25 | 25 | 42 | 37 | 39 | ||
| 2 1/2″ | 8 | 7 | 7 | 12 | 10 | 12 | 18 | 13 | 15 | SEE 1500 # WEIGHTS | 36 | 36 | 35 | 52 | 55 | 56 | ||
| 3″ | 10 | 8 | 9 | 15 | 13 | 16 | 23 | 16 | 20 | 31 | 26 | 29 | 48 | 48 | 48 | 94 | 83 | 86 |
| 4″ | 15 | 13 | 17 | 25 | 22 | 27 | 42 | 37 | 41 | 53 | 53 | 54 | 73 | 73 | 73 | 145 | 125 | 130 |
| 5″ | 19 | 15 | 20 | 32 | 28 | 35 | 68 | 63 | 68 | 86 | 83 | 87 | 130 | 130 | 140 | 245 | 210 | 225 |
| 6″ | 24 | 19 | 26 | 42 | 39 | 50 | 81 | 80 | 86 | 110 | 110 | 115 | 165 | 165 | 160 | 380 | 325 | 345 |
| 8″ | 39 | 30 | 45 | 67 | 58 | 81 | 120 | 115 | 140 | 175 | 170 | 200 | 275 | 260 | 300 | 580 | 485 | 530 |
| 10″ | 52 | 43 | 70 | 91 | 81 | 124 | 190 | 170 | 230 | 260 | 245 | 290 | 455 | 435 | 510 | 1075 | 930 | 1025 |
| 12″ | 80 | 64 | 110 | 140 | 115 | 185 | 225 | 200 | 295 | 325 | 325 | 415 | 690 | 580 | 690 | 1525 | 1100 | 1300 |
| 14″ | 110 | 90 | 140 | 180 | 165 | 250 | 280 | 230 | 355 | 400 | 400 | 520 | 940 | NA | 975 | NA | NA | NA |
| 16″ | 140 | 98 | 180 | 250 | 190 | 295 | 390 | 330 | 495 | 495 | 425 | 600 | 1250 | NA | 1300 | NA | NA | NA |
| 18″ | 150 | 130 | 220 | 320 | 250 | 395 | 475 | 400 | 630 | 680 | 600 | 850 | 1625 | NA | 1750 | NA | NA | NA |
| 20″ | 180 | 165 | 285 | 400 | 315 | 505 | 590 | 510 | 810 | 830 | 730 | 1075 | 2050 | NA | 2225 | NA | NA | NA |
| 22″ | 225 | 185 | 355 | 465 | 370 | 640 | 720 | 590 | 1000 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 24″ | 260 | 220 | 430 | 580 | 475 | 790 | 830 | 730 | 1250 | 1500 | 1400 | 2025 | 3325 | NA | 3625 | NA | NA | NA |
We have a range of Pipes, Tubes, Plates, Sheets, Strips, Round Bar, Pipe Fittings, Tube Fittings, Flanges, Wire, Fasteners, Valves, etc., as per National / International Standard Specification.