Dimensions of PN 320 flanges
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} $ | Flange thickness $ C_4 $ , in $ \mathrm{mm} $ | Flange thickness $ C_2 $ , in $ \mathrm{mm} $ | Flange thickness $ C_3 $ , in $ \mathrm{mm} $ | Centre portion $ G_{max} $ , in $ \mathrm{mm} $ | Length $ H_2 $ , in $ \mathrm{mm} $ | Length $ H_3 $ , in $ \mathrm{mm} $ | Neck diameters $ N_1 $ , in $ \mathrm{mm} $ | Neck diameters $ N_3 $ , in $ \mathrm{mm} $ | Corner radius $ R_1 $ for flange type 11, in $ \mathrm{mm} $ | Corner radius $ R_1 $ for flange type 21, in $ \mathrm{mm} $ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
10 | 125 | 85 | 18 | 4 | M16 | 17.2 | 24 | 24 | 24 | - | 58 | 6 | 44 | 46 | 4 | 4 |
15 | 130 | 90 | 18 | 4 | M16 | 21.3 | 26 | 26 | 26 | - | 60 | 6 | 48 | 52 | 4 | 4 |
25 | 160 | 115 | 22 | 4 | M20 | 33.7 | 34 | 34 | 34 | - | 78 | 8 | 68 | 72 | 4 | 4 |
40 | 195 | 145 | 26 | 4 | M24 | 48.3 | 38 | 38 | 38 | - | 88 | 10 | 92 | 96 | 6 | 5 |
50 | 210 | 160 | 26 | 8 | M24 | 63.5 | 42 | 42 | 42 | - | 100 | 10 | 106 | 110 | 6 | 5 |
65 | 255 | 200 | 30 | 8 | M27 | 88.9 | 51 | 51 | 51 | - | 120 | 12 | 138 | 137 | 6 | 6 |
80 | 275 | 220 | 30 | 8 | M27 | 101.6 | 55 | 55 | 55 | 43 | 130 | 14 | 156 | 160 | 8 | 6 |
100 | 335 | 265 | 36 | 8 | M33 | 133 | 65 | 65 | 65 | 58 | 145 | 16 | 186 | 190 | 8 | 8 |
125 | 380 | 310 | 36 | 12 | M33 | 168.3 | 75 | 75 | 75 | 78 | 175 | 20 | 230 | 235 | 8 | 8 |
150 | 425 | 350 | 39 | 12 | M36 | 193.7 | 84 | 84 | 84 | 94 | 195 | 25 | 265 | 266 | 10 | 10 |
200 | 525 | 440 | 42 | 16 | M39 | 244.5 | 103 | 103 | 103 | 140 | 235 | 30 | 345 | 350 | 10 | 10 |
250 | 640 | 540 | 52 | 16 | M48 | 323.9 | 125 | 125 | 125 | 190 | 300 | 40 | 428 | 432 | 12 | 10 |