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Dimensions of PN 25 flanges

This diagram illustrates the arrangement but not necessarily the correct number of bolt holes K D L
This diagram illustrates the arrangement but not necessarily the correct number of bolt holes
Flange type 01 C 1 B 1
Flange type 01
Flange type 02 and 32 B 2 B 1 d 1 E C 1 F 1
Flange type 02 and 32
Flange type 02 and 35 C 1 A S d 1 H 4 F 2
Flange type 02 and 35
Flange type 04 and 34 A B 3 S N 1 d 1 E H 2 F 1 C 1 H 3
Flange type 04 and 34
Flange type 05 C 4 G max
Flange type 05
Flange type 11 H 2 A N 1 S C 2 H 3 R 1
Flange type 11
Flange type 01 N 2 C 2 R 1 H 1 B 1
Flange type 12
Flange type 13 N 2 C 2 R 1 H 1
Flange type 13
Flange type 21 N 3 C 3 A C 3 N 3 R 1 R 1
Flange type 21

DN Outside diameter $ D $ , in $ \mathrm{mm} $ Diameter of bolt circle $ K $ , in $ \mathrm{mm} $ Diameter of bolt hole $ L $ , in $ \mathrm{mm} $ Number of bolts Bolts size Outside diameter of neck $ A $ , in $ \mathrm{mm} $ Bore diameters $ B_1 $ , in $ \mathrm{mm} $ Bore diameters $ B_2 $ , in $ \mathrm{mm} $ Bore diameters $ B_3 $ , in $ \mathrm{mm} $ Flange thickness $ C_1 $ , in $ \mathrm{mm} $ Flange thickness $ C_2 $ , in $ \mathrm{mm} $ Flange thickness $ C_3 $ , in $ \mathrm{mm} $ Flange thickness $ C_4 $ , in $ \mathrm{mm} $ Chamfer $ E $ , in $ \mathrm{mm} $ Collar thickness $ F_1 $ , in $ \mathrm{mm} $ Collar thickness $ F_2 $ , in $ \mathrm{mm} $ Centre portion $ G_{max} $ , in $ \mathrm{mm} $ Length $ H_1 $ , in $ \mathrm{mm} $ Length $ H_2 $ , in $ \mathrm{mm} $ Length $ H_3 $ , in $ \mathrm{mm} $ Length $ H_4 $ , in $ \mathrm{mm} $ Neck diameters $ N_1 $ , in $ \mathrm{mm} $ Neck diameters $ N_2 $ , in $ \mathrm{mm} $ Neck diameters $ N_3 $ , in $ \mathrm{mm} $ Corner radius $ R_1 $ , in $ \mathrm{mm} $
10 90 60 14 4 M12 17.2 18 21 31 14 16 16 16 3 12 5 - 22 35 6 35 28 30 28 4
15 95 65 14 4 M12 21.3 22 25 35 14 16 16 16 3 12 5 - 22 38 6 38 32 35 32 4
20 105 75 14 4 M12 26.9 27.5 31 42 16 18 18 18 4 14 6 - 26 40 6 40 40 45 40 4
25 115 85 14 4 M12 33.7 34.5 38 49 16 18 18 18 4 14 7 - 28 40 6 40 46 52 50 4
32 140 100 18 4 M16 42.4 43.5 47 59 18 18 18 18 5 14 8 - 30 42 6 42 56 60 60 6
40 150 110 18 4 M16 48.3 49.5 53 67 18 18 18 18 5 14 8 - 32 45 7 45 64 70 70 6
50 165 125 18 4 M16 60.3 61.5 65 77 20 20 20 20 5 16 10 - 34 48 8 48 75 84 84 6
65 185 145 18 8 M16 76.1 77.5 81 96 22 22 22 22 6 16 11 55 38 52 10 52 90 104 104 6
80 200 160 18 8 M16 88.9 90.5 94 114 24 24 24 24 6 18 12 70 40 58 12 58 105 118 120 8
100 235 190 22 8 M20 114.3 116 120 138 26 24 24 24 6 20 14 90 44 65 12 65 134 145 142 8
125 270 220 26 8 M24 139.7 141.5 145 166 28 26 26 26 6 22 16 115 48 68 12 68 162 170 162 8
150 300 250 26 8 M24 168.3 170.5 174 194 30 28 28 28 6 24 18 140 52 75 12 75 192 200 192 10
200 360 310 26 12 M24 219.1 221.5 226 250 32 30 30 30 6 26 18 190 52 80 16 80 244 256 252 10
250 425 370 30 12 M27 273 276.5 281 302 35 32 32 32 8 26 18 235 60 88 18 88 298 310 304 12
300 485 430 30 16 M27 323.9 327.5 333 356 38 34 34 34 8 28 20 285 67 92 18 92 352 364 364 12
350 555 490 33 16 M30 355.6 359.5 365 408 42 38 38 38 8 32 22 332 72 100 20 100 398 418 418 12
400 620 550 36 16 M33 406.4 411 416 462 48 40 40 40 8 34 24 380 78 110 20 110 452 472 472 12
450 670 600 36 20 M33 457 462 467 510 54 46 46 50 8 36 26 425 84 110 20 110 500 520 520 12
500 730 660 36 20 M33 508 513.5 519 568 58 48 48 51 8 38 28 475 90 125 20 125 558 580 580 12
600 845 770 39 20 M36 610 616.5 622 670 68 48 58 66 8 40 30 575 100 125 20 125 660 684 684 12
700 960 875 42 24 M39 711 - 721 - 85 50 - - 8 - 30 - - 129 20 125 760 - 780 12
800 1085 990 48 24 M45 813 - 824 - 95 53 - - 8 - 35 - - 138 22 135 864 - 882 12
900 1185 1090 48 28 M45 914 - - - - 57 - - - - - - - 148 24 - 968 - 982 12
1000 1320 1210 56 28 M52 1016 - - - - 63 - - - - - - - 160 24 - 1070 - 1086 16
1200 1530 1420 56 32 M52 1219 - - - - - - - - - - - - - - - - - - -
1400 1755 1640 62 36 M56 1422 - - - - - - - - - - - - - - - - - - -
1600 1975 1860 62 40 M56 1626 - - - - - - - - - - - - - - - - - - -
1800 2195 2070 70 44 M64 1829 - - - - - - - - - - - - - - - - - - -
2000 2425 2300 70 48 M64 2032 - - - - - - - - - - - - - - - - - - -
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