钢制管法兰、垫片、紧固件选配 尺 寸
8.1法兰连接尺寸
8.1. 1法兰的连接尺寸按图8, 1. 1和表8. 1. 1的规定(表8_ 1. 1黑线框内为不同压力等级,但具有 相同连接尺寸的法兰)。可与本标准配合使用的国内外法兰标准参见本标准附录C。
8. 1.2螺栓孔应等间距均布^
〇J 表8.1.1连接尺寸 (mm)
公称尺寸 | PN2.5 | PN6 | PN10 | PN16 | ||||||||||||||||
DN | D | K | L | Th | «(个) | D | K | L | Th | 打(个) | D | K | L | Th | «(个) | D | K | L | Th | n(个) |
10 | 75 | 50 | 11 | M10 | 4 | 75 | 50 | 11 | M10 | 4 | 90 | 60 | 14 | M12 | 4 | 90 | 60 | 14 | M12 | 4. |
15 | 80 | 55 | Π | M10 | 4 | 80 | 55 | 11 | M10 | 4 | 95 | 65 | 14 | M12 | 4 | 95 | 65 | 14 | M12 | 4 |
20 | 90 | 65 | 11 | M10 | 4 | 90 | 65 | 11 | M10 | 4 | 105 | 75 | 14 | M12 | 4 | 105 | 75 | 14 | M12 | 4 — |
25 | 100 | 75 | 11 | M10 | 4 | 100 | 75 | 11 | M10 | 4 | 115 | 85 | 14 | M12 | 4 | 115 | 85 | 14 | M12 | 4 |
32 | 120 | 90 | 14 | M12 | 4 | 120 | 90 | 14 | M12 | 4 | 140 | 100 | 18 | M16 | 4 | 140 | 100 | 18 | M16 | 4 |
40 | 130 | 100 | 14 | M12 | 4 | 130 | 100 | 14 | M12 | 4 | 150 | 110 | 18 | M16 | 4 | 150 | 110 | 18 | M16 | 4 |
50 | 140 | 110 | 14 | M12 | 4 | 140 | 110 | Η | M12 | 4 | 165 | 125 | 18 | M16 | 4 | 165 | 125 | 18 | M16 | 4 |
65 | 160 | 130 | 14 | M12 | 4 | 160 | 130 | 14 | M12 | 4 | 185 | 145 | 18 | M16 | say | 185 | 145 | 18 | M16 | 8(4)a |
801 | 190 | 150 | 18 | M16 | 4 | 190 | 150 | 18 | M16 | 4 | 200 | 160 | 18 | M16 | 8 | 200 | 160 | 18 | M16 | 8 |
100 | 210 | 170 | 18 | M16 | 4 | 210 | 170 | 18 | M16 | 4 | 220 | 180 | 18 | M16 | 8 | 220 | 180 | 18 | M16 | 8 |
125 | 240 | 200 | 18 | M16 | 8 | 240 | 200 | 18 | M16 | 8 | 250 | 210 | 18 | M16 | 8 | 250 | 210 | 18 | M16 | 8 |
150 | 265 | 225 | 18 | M16 | 8 | 265 | 225 | 18 | M16 | 8 | 285 | 240 | 22 | M20 | 8 | 285 | 240 | 22 | M20 | 8 |
200 | 320 | 280 | 18 | M16 | 8 | 320 | 280 | 18 | M16 | 8 | 340 | 295 | 22 | M20 | 8 | 340 | 295 | 22 | M20 | 12 |
250 | 375 | 335 | 18 | M16 | 12 | 375 | 335 | 18 | M16 | 12 | 395 | 350 | 22 | M20 | 12 | 405 | 355 | 26 | M24 | 12 |
300 | 440 | 395 | 22 | M20 | 12 | 440 | 395 | 22 | M20 | 12 | 445 | 400 | 22 | M20 | 12 | 460 | 410 | 26 | M24 | 12 |
350 | 490 | 445 | 22 | M20 | 12 | 490 | 445 | 22 | M20 | 12 | 505 | 460 | 22 | M20 | 16 | 520 | 470 | 26 | M24 | 16 |
400 | 540 | 495 | 22 | M20 | 16 | 540 | 495 | 22 | M20 | 16 | 565 | 515 | 26 | M24 | 16 | 580 | 525 | 30 | M27 | 16 |
450 | 595 | 550 | 22 | M20 | 16 | 595 | 550 | 22 | M20 | 16 | 615 | 565 | 26 | M24 | 20 | 640 | 585 | 30 | M27 | 20 |
500 | 645 | 600 | 22 | M20 | 20 | 645 | 600 | ’22 | M20 | 20 | 670 | 620 | 26 | M24 | 20 | 715 | 650 | 33 | M30 | 20 |
600 | 755 | 705 | 26 | M24 | 20 | 755 | 705 | 26 | M24 | 20 | 780 | 725 | 30 | M27 | 20 | .840 | 770 | 36 | M3 3 | 20 |
700 | 860 | 810 | 26 | M24 | 24 | 860 | 810 | 26 | M24 | 24 | 895 | 840 | 30 | M27 | 24 | 910 | 840 | 36 | M33 | 24 |
800 | 975 | 920 | 30 | M2 7 | 24 | 975 | 920 | 30 | M27 | 24 | 1015 | 950 | 33 | M30 | 24 | 1025 | 950 | 39 | M3 6 | 24 |
900 | 1075 | 1020 | 30 | M2 7 | 24 | 1075 | 1020 | 30 | M27 | 24 | 1115 | 1050 | 33 | M30 | 28 | 1125 | 1050 | 39 | M36 | 2δ |
1000 | 1175 | 1120 | 30 | M27 | 28 | 1175 | 1120 | 30 | M27 | 28 | 1230 | 1160 | 36 | M33 | 28 | 1255 | 1170 | 42 | M39 | 28 |
1200 | 1375 | 1320 | 30 | M27 | 32 | 1405 | 1340 | 33 | M30 | 32 | 1455 | 1380 | 39 | M3 6 | 32 | 1485 | 1390 | 48 | M45 | 32 |
1400 | 1575 | 1520 | 30 | M27 | 36 | 1630 | 1560 | 36 | M3 3 | 36 | 1675 | 1590 | 42 | M3 9 | 36 | 1685 | 1590 | 48 | M45 | 36 |
1600 | 1790 | 1730 | 30 | M27 | 40 | 1830 | 1760 | 36 | M33 | 40 | 1915 | 1820 | 48 | M45 | 40 | 1930 | 1820 | 56 | M52 | 40 |
1800 | 1990 | 1930 | 30 | M27 | 44 | 2045 | 1970 | 39 | M36 | 44 | 2115 | 2020 | 48 | M45 | 44 | 2130 | 2020 | 56 | M52 | 44 |
2000 | 2190 | 2130 | 30 | M27 | 48 | 2265 | 2180 | 42 | M39 | 48 | 2325 | 2230 | 48 | M45 | 48 | 2345 | 2230 | 62 | M56 | 48 |
公称尺寸 DN | PN25 | ΡΝ40 | PN63 | ||||||||||||
D | K | L | Th | «(个) | D | K | L | Th | n(个) | D | K | L | Th | n(个) | |
10 | 90 | 60 | 14 | M12 | 4 | 90 | 60 | Η | M12 | 4 | 100 | 70 | 14 | Ml 2 | 4 |
15 | 95 | 65 | 14 | M12 | 4 | 95 | 65 | Η | M12 | 4 | 105 | 75 | 14 | M12 | 4 |
20 | 105 | 75 | 14 | M12 | 4 | 105 | 75 | 14 | M12 | 4 | 130 | 90 | 18 | M16 | 4 |
25 | 115 | 85 | 14 | M12 | 4 | 115 | 85 | 14 | M12 | 4 | 140 | 100 | 18 | M16 | 4 |
32 | 140 | 100 | 18 | M16 | 4 | 140 | 100 | 18 | Ml 6 | 4 | 155 | 110 | 22 | M20 | 4 |
40 | 150 | 110 | 18 | M16 | 4 | 150 | 110 | 18 | M16 | 4 | 170 | 125 | 22 | M20 | 4 |
50 | 165 | 125 | 18 | M16 | 4 | 165 | 125 | IS | M16 | 4 | 180 | 135 | 22 | M20 | 4 |
65 | 1S5 | 145 | 18 | M16 | 8 | 185 | 145 | 18 | M16 | 8 | 205 | 160 | 22 | M20 | 8 |
80b | 200 | 160 | 18 | M16 | 8 | 200 | 160 | 18 | M16 | 8 | 215 | 170 | 22 | M20 | 8 |
100 | 235 | 190 | 22 | M20 | 8 | 235 | 190 | 22 | M20 | 8 | 250 | 200 | 26 | M24 | 8 |
125 | 270 | 220 | 26 | M24 | δ | 270 | 220 | 26 | M24 | 8 | 295 | 240 | 30 | M27 | 8 |
150 | 300 | 250 | 26 | M24 | 8 | 300 | 250 | 26 | M24 | 8 | 345 | 280 | 33 | M30 | 8 |
200 | 360 | 310 | 26 | M24 | 12 | 375 | 320 | 30 | M27 | 12 | 415 | 345 | 36 | M3 3 | 12 |
250 | m | 370 | 30 | M27 | 12 | 450 | 385 | 33 | M30 | 12 | 470 | 400 | 36 | M3 3 | 12 |
300 | 485 | 430 | 30 | M27 | 16 | 515 | 450 | 33 | M30 | 16 | 530 | 460 | 36 | M33 | 16 |
350 | 555 | 490 | 33 | M30 | 16 | 580 | 510 | 36 | M33 | 16 | 600 | 525 | 39 | M36 | 16 |
400 | 620 | 550 | 36 | M3 3 | .16 | 660 | 585 | 39 | M36 | 16 | 670 | 585 | 42 | M39 | 16 |
450 | 670 | 600 | 36 | M33 | 20 | 685 | 610 | 39 | M36 | 20 | — | — | — | — | — |
500 | 730 | 660 | 36 | M33 | 20 | 755 | 670 | 42 | M39 | 20 | 一 | 一 | — | 一 | 一 |
600 | 845 | 770 | 39 | M36 | 20 | 890 | 795 | 48 | M45 | 20 | — | — | — | — | — |
700 | 960 | 875 | 42 | M39 | 24 | ||||||||||
800 | 1085 | 990 | 48 | M45 | 24 | ||||||||||
900 | 1185 | 1090 | 48 | M45 | 28 | ||||||||||
1000 | 1320 | 1210 | 55 | M52 | 28 | ||||||||||
1200 | 1530 | 1420 | 55 | M52 | 32 |
公称尺寸 | ΡΝ100 | ΡΝ160 | ||||||||
DN | D | Κ | L | Th | η(个) | D | Κ | L | Th | n(个〉 |
10 | 100 | 70 | 14 | M12 | 4 | 100 | 70 | 14 | Ml 2 | 4 |
15 | 105 | 75 | 14 | M12 | 4 | 105 | 75 | 14 | Ml 2 | 4 |
20 | 130 | 90 | 18 | M16 | 4 | 130 | 90 | 18 | Ml 6 | 4 |
25 | 140 | 100 | 18 | M16 | 4 | 140 | 100 | 18 | M16 | 4 |
32 | 155 | 110 | 22 | M20 | 4 | 155 | 110 | 22 | M20 | 4 |
40 | 170 | 125 | 22 | M20 | 4 | 170 | 125 | 22 | M20 | 4 |
50 | 195 | 145 | 26 | M24 | 4 | 195 | 145 | 26 | M24 | 4 |
65 | 220 | 170 | 26 | M24 | 8 | 220 | 170 | 26 | M24 | 8 |
80 | 230 | 180 | 26 | M24 | 8 | 230 | 180 | 26 | M24 | 8 |
100 | 265 | 210 | 30 | M27 | S | 265 | 210 | 30 | M27 | 8 |
125 | 315 | 250 | 33 | M30 | 8 | 315 | 250 | 33 | M30 | 8 |
150 | 355 | 290 | 33 | M30 | 12 | 355 | 290 | 33 | M30 | 12 |
200 | 430 | 360 | 36 | M33 | 12 | 430 | 360 | 36 | M33 | 12 |
250 | 505 | 430 | 39 | M36 | 12 | 515 | 430 | 42 | M39 | 12 |
300 | 585 | 500 | 42 | M39 | 16 | 585 | 500 | 42 | M39 | 16 |
350 | 655 | 560 | 48 | M45 | 16 | — | — | — | — | — |
400 | 715 | 620 | 48 | M45 | 16 | — | — | — | — | 一 |
*也可采用4个螺栓孔,应按生产厂家与买方签订的协议提供。 b PN10〜40、DN80法兰的连接尺寸相同。
8.2法兰结构尺寸
8. 2. 1板式平焊法兰的尺寸按图8. 2.1和表δ. 2.1-1〜表8. 2.1-6的规定
图8.2.1板式平焊钢制管法兰
公称 尺寸 DN | 钢管外径 Αι | 连接尺寸 | 法兰 厚度 C | 法兰内径 B1 | ||||||
法兰 外径 D | 螺栓孔中 心圆直径 K | 螺栓孔 直径 L | 螺栓孔 数量 rt(个) | 螺栓 Th | ||||||
A | B | |||||||||
A | B | |||||||||
10 | 17.2 | 14 | 75 | 50 | 11 | 4 | M10 | 12 | 18 | 15 |
15 | 21.3 | 18 | 80 | 55 | 11 | 4 | M10 | 12 | 22,5 | 19 |
20 | 26.9 | 25 | 90 | 65 | 11 | 4 | M10 | 14 | 27.5 | 26 |
25 | 33.7 | 32 | 100 | 75 | 11 | 4 | M10 | 14 | 34.5 | 33 |
32 | 42.4 | 38 | 120 | 90 | 14 | 4 | M12 | 16 | 43.5 | 39 |
40 | 48.3 | 45 | 130 | 100 | 14 | 4 | Ml 2 | 16 | 49.5 | 46 |
50 | 60.3 | 57 | 140 | 110 | 14 | 4 | M12 | 16 | 6L5 | 59 |
65 | 76. 1 | 76 | 160 | 130 | 14 | 4 | M12 | 16 | 77.5 | 78 |
80 | 88.9 | 89 | 190 | 150 | 18 | 4 | Ml 6 | 18 | 90.5 | 91 |
100 | 114.3 | 108 | 210 | 170 | 18 | 4 | M16 | 18 | 116 | 110 |
125 | 139.7 | 133 | 240 | 200 | 18 | 8 | M16 | 20 | 143,5 | 135 |
150 | 168.3 | 159 | 265 | 225 | 18 | 8 | M16 | 20 | 170.5 | 161 |
200 | 219.1 | 219 | 320 | 280 | 18 | 8 | M16 | 22 | 221.5 | 222 |
250 | 273 | 273 | 375 | 335 | 18 | 12 | M16 | 24 | 276· 5 | 276 |
300 | 323.9 | 325 | 440 | 395 | 22 | 12 | M20 | 24 | 328 | 328 |
350 | 355.6 | 377 | 490 | 445 | 22 | 12 | M20 | 26 | 360 | 381 |
400 | 406.4 | 426 | 540 | 495 | 22 | 16 | M20 | 28 | 411 | 430 |
450 | 457 | 480 | 595 | 550 | 22 | 16 | M20 | 30 | 462 | 485 |
500 | 508 | 530 | 645 | 600 | 22 | 20 | M20 | 30 | 513.5 | 535 |
600 | 610 | 630 | 755 | 705 | 26 | 20 | M24 | 32 | 616.5 | 636 |
700 | 711 | 720 | 860 | 810 | 26 | 24 | M24 | 36 | 715 | 724 |
800 | 813 | 820 | 975 | 920 | 30 | 24 | M27 | 38 | 817 | 824 |
900 | 914 | 920 | 1075 | 1020 | 30 | 24 | M27 | 40 | 918 | 924 |
1000 | 1016 | 1020 | 1175 | 1120 | 30 | 28 | M27 | 42 | 1020 | 1024 |
1200 | 1219 | 1220 | 1375 | 1320 | 30 | 32 | M27 | 44 | 1223 | 1224 |
1400 | 1422 | 1420 | 1575 | 1520 | 30 | 36 | M27 | 48 | 1426 | 1424 |
1600 | 1626 | 1620 | 1790 | 1730 | 30 | 40 | M2 7 | 51 | 1630 | 1624 |
1800 | 1829 | 1820 | 1990 | 1930 | 30 | 44 | M27 | 54 | 1833 | 1824 |
2000 | 2032 | 2020 | 2190 | 2130 | 30 | 48 | M27 | 58 | 2036 | 2024 . |
公称 尺寸 DN | 钢管外径 An | 连接尺寸 | 法兰 厚度 C | 法兰内径 Βι | ||||||
法兰 外径 D | 螺栓孔中 心圆直径 K | 螺栓孔 直径 L | 螺栓孔 数量 «(个) | 螺栓 Th | ||||||
A | B | A | B | |||||||
10 | 17.2 | 14 | 75 | 50 | 11 | 4 | M10 | 12 | 18 | 15 |
15 | 21.3 | 18 | 80 | 55 | 11 | 4 | M10 | 12 | 22.5 | 19 |
20 | 26.9 | 25 | 90 | 65 | 11 | 4 | M10 | 14 | 27.5 | 26 |
25 | 33.7 | 32 | 100 | 75 | 11 | 4 | mo | 14 | 34.5 | 33 |
32 | 42,4 | 38 | 120 | 90 | 14 | 4 | M12 | 16 | 43.5 | 39 |
40 | 48.3 | 45 | 130 | 100 | 14 | 4 | M12 | 16 | 49.5 | 46 |
50 | 60.3 | 57 | 140 | 110 | 14 | 4 | M12 | 16 | 6L5 | 59 |
65 | 76.1 | 76 | 160 | 130 | 14 | 4 | M12 | 16 | 77.5 | 78 |
80 | 88.9 | 89 | 190 | 150 | 18 | 4 | M16 | 18 | 90.5 | 91 |
100 | 114.3 | 108 | 210 | 170 | 18 | 4 | M16 | 18 | 116 | 110 |
125 | 139.7 | 133 | 240 | 200 | 18 | δ | M16 | 20 | 143. 5 | 135 |
150 | 168.3 | 159 | 265 | 225 | 18 | 8 | M16 | 20 | 170.5 | 161 |
200 | 219.1 | 219 | 320 | 280 | 18 | 8 | M16 | 22 | 221.5 | 222 |
250 | 273 | 273 | 375 | 335 | 18 | 12 | M16 | 24 | 276.5 | 276 |
300 | 323.9 | 325 | 440 | 395 | 22 | 12 | M20 | 24 | 328 | 328 |
350 | 355.6 | 377 | 490 | 445 | 22 | 12 | M20 | 26 | 360 | 381 |
400 | 406. 4 | 426 | 540 | 495 | 22 | 16 | M20 | 28 | 411 | 430 |
450 | 457 | 480 | 595 | 550 | 22 | 16 | M20 | 30 | 462 | 485 |
500 | 508 | 530 | 645 | 600 | 22 | 20 | M20 | 30 | 513· 5 | 535 |
600 | 610 | 630 | 755 | 705 | 26 | 20 | M24 | 32 | 616.5 | 636 |