表中收集（国标、美标）常用法兰规格尺寸
| GB9119，2—88 | GB9119，2—88 | |||||||||||
| in | 公称通径 | 10kg=1.0MPa | 公称通径 | 16kg=1.6MPa | ||||||||
| 法兰外径 | 螺栓孔距 | 螺栓直径 | 螺栓孔数 | 法兰厚度 | 法兰外径 | 螺栓孔距 | 螺栓直径 | 螺栓孔数 | 法兰厚度 | |||
| 3/8 | DN10 | 50 | 60 | 14 | 4 | 14 | DN10 | 90 | 60 | 14 | 4 | 14 |
| 1/2 | DN15 | 59 | 65 | 14 | 4 | 14 | DN15 | 95 | 65 | 14 | 4 | 14 |
| 3/4 | DN20 | 105 | 75 | 14 | 4 | 16 | DN20 | 105 | 75 | 14 | 4 | 16 |
| 1 | DN25 | 115 | 85 | 14 | 4 | 16 | DN25 | 115 | 85 | 14 | 4 | 16 |
| 11/4 | DN32 | 140 | 100 | 18 | 4 | 18 | DN32 | 140 | 100 | 18 | 4 | 18 |
| 11/2 | DN40 | 150 | 110 | 18 | 4 | 18 | DN40 | 150 | 110 | 18 | 4 | 18 |
| 2 | DN50 | 165 | 125 | 18 | 4 | 20 | DN50 | 165 | 125 | 18 | 4 | 20 |
| 21/2 | DN65 | 185 | 145 | 18 | 4 | 20 | DN65 | 185 | 145 | 18 | 4 | 20 |
| 3 | DN80 | 200 | 160 | 18 | 8 | 20 | DN80 | 200 | 160 | 18 | 8 | 20 |
| 31/2 | DN100 | 220 | 180 | 18 | 8 | 22 | DN100 | 220 | 180 | 18 | 8 | 22 |
| 4 | DN125 | 250 | 210 | 18 | 8 | 22 | DN125 | 250 | 210 | 18 | 8 | 22 |
| 5 | DN150 | 285 | 240 | 22 | 8 | 24 | DN150 | 285 | 240 | 22 | 8 | 24 |
| 6 | DN200 | 340 | 295 | 22 | 8 | 24 | DN200 | 340 | 295 | 22 | 8 | 26 |
| 8 | DN250 | 395 | 350 | 22 | 12 | 26 | DN250 | 405 | 355 | 26 | 12 | 29 |
| 10 | DN300 | 445 | 400 | 22 | 12 | 28 | DN300 | 460 | 410 | 26 | 12 | 32 |
| 12 | DN350 | 505 | 460 | 22 | 16 | 30 | DN350 | 520 | 470 | 26 | 16 | 35 |
| 14 | DN400 | 565 | 515 | 26 | 16 | 32 | DN400 | 580 | 525 | 30 | 16 | 38 |
| 16 | DN450 | 615 | 565 | 26 | 20 | 35 | DN450 | 640 | 585 | 30 | 20 | 42 |
| 18 | DN500 | 670 | 620 | 26 | 20 | 38 | DN500 | 715 | 650 | 33 | 20 | 46 |
| 20 | DN600 | 780 | 725 | 26 | 20 | 42 | DN600 | 840 | 770 | 36 | 20 | 52 |
| ANSI标准125型 | ANSI标准150型 | |||||||||||
| in | 公称通径 | 10kg=1.0MPa | 公称通径 | 16kg=1.6MPa | ||||||||
| 法兰外径 | 螺栓孔距 | 螺栓直径 | 螺栓孔数 | 法兰厚度 | 法兰外径 | 螺栓孔距 | 螺栓直径 | 螺栓孔数 | 法兰厚度 | |||
| 3/8 | DN10 | DN10 | ||||||||||
| 1/2 | DN15 | DN15 | ||||||||||
| 3/4 | DN20 | DN20 | ||||||||||
| 1 | DN25 | DN25 | ||||||||||
| 11/4 | DN32 | DN32 | ||||||||||
| 11/2 | DN40 | 127 | 98.5 | 16 | 4 | 14.3 | DN40 | 127 | 98.5 | 16 | 4 | 17.5 |
| 2 | DN50 | 152 | 120.5 | 19 | 4 | 15.9 | DN50 | 152 | 121.5 | 19 | 4 | 19.1 |
| 21/2 | DN65 | 178 | 139.5 | 19 | 4 | 17.5 | DN65 | 178 | 139.5 | 19 | 4 | 22.3 |
| 3 | DN80 | 190 | 152.5 | 19 | 4 | 19.1 | DN80 | 190 | 152.5 | 19 | 4 | 23.9 |
| 4 | DN100 | 229 | 190.5 | 19 | 8 | 23.9 | DN100 | 229 | 190.5 | 19 | 8 | 23.9 |
| 5 | DN125 | 254 | 216.5 | 22 | 8 | 23.9 | DN125 | 254 | 216.5 | 22 | 8 | 23.9 |
| 6 | DN150 | 279 | 241.5 | 22 | 8 | 25.4 | DN150 | 279 | 241.5 | 22 | 8 | 25.4 |
| 8 | DN200 | 343 | 298.5 | 22 | 8 | 28.6 | DN200 | 343 | 298.5 | 22 | 8 | 28.6 |
| 10 | DN250 | 406 | 362.5 | 25 | 12 | 30.2 | DN250 | 406 | 362.5 | 25 | 12 | 30.2 |
| 12 | DN300 | 483 | 432 | 25 | 12 | 31.8 | DN300 | 483 | 432 | 25 | 12 | 31.8 |
| 14 | DN350 | 533 | 476.5 | 29 | 12 | 35 | DN350 | 533 | 476.5 | 29 | 12 | 35 |
| 16 | DN400 | 597 | 539.5 | 29 | 16 | 36.6 | DN400 | 597 | 539.5 | 29 | 16 | 36.6 |
| 18 | DN450 | DN450 | ||||||||||
| 20 | DN500 | DN500 | ||||||||||
| 24 | DN600 | DN600 | ||||||||||
| ANSI标准300型 | |||||
| 公称通径 | |||||
| 法兰外径 | 螺栓孔距 | 螺栓直径 | 螺栓孔数 | 法兰厚度 | |
| DN10 | |||||
| DN15 | |||||
| DN20 | |||||
| DN25 | |||||
| DN32 | |||||
| DN40 | 156 | 114.5 | 19 | 4 | 18 |
| DN50 | 165 | 127 | 22 | 8 | 18 |
| DN65 | 190 | 149 | 22 | 8 | 20 |
| DN80 | 210 | 168 | 22 | 8 | 22 |
| DN100 | 254 | 200 | 22 | 8 | 24 |
| DN125 | 279 | 235 | 22 | 8 | 26 |
| DN150 | 318 | 270 | 2 2 | 12 | 28 |
| DN200 | 381 | 330 | 25 | 12 | 30 |
| DN250 | 444 | 387.5 | 29 | 16 | 34 |
| DN300 | 521 | 451 | 32 | 16 | 36 |
| DN350 | 584 | 514.5 | 32 | 20 | 40 |
| DN400 | 648 | 571.5 | 3 5 | 20 | 46 |
| DN450 | |||||
| DN500 | |||||
| DN600 | |||||
| 螺栓配套孔距对比表 | |||||||||||
| 螺栓孔距直径 | 11 | 14 | 18（19） | 22（23） | 26（28） | 30（31） | 33（34） | 36（37） | 39（40） | ||
| 螺栓公称直径 | M10 | M12 | M16 | M20 | M24 | M27 | M30 | M33 | M36 | ||
