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Nominal pressure PN(MPA) | Nominal diameter DN(MM) | size(mm) | Piping flange (for reference) | ||||
L | D | D1 | Diameter of bolt hole center circle D1 | Number of bolts | Bolt diameter D | ||
1.0、/1.6 | 50 | 15 | 104 | 25 | 125 | 4 | M16 |
60 | 15 | 125 | 38 | 145 | 4 | M16 | |
80 | 16 | 140 | 46 | 160 | 8 | M16 | |
100 | 16 | 160 | 71.5 | 180 | 8 | M16 | |
125 | 17 | 185 | 95 | 210 | 8 | M16 | |
150 | 19 | 220 | 114 | 240 | 8 | M20 | |
200 | 26 | 270 | 140 | 295 | 8 | M20 | |
250 | 29 | 330 | 188 | 350 | 12 | M20 | |
300 | 38 | 380 | 216 | 400 | 12 | M20 | |
350 | 38 | 440 | 263 | 460 | 16 | M24 | |
400 | 48 | 491 | 305 | 515 | 16 | M24 | |
450 | 48 | 541 | 356 | 565 | 20 | M24 | |
500 | 58 | 596 | 406 | 620 | 20 | M24 | |
600 | 68 | 696 | 482 | 725 | 20 | M27 | |
2.5/4.0 | 50 | 19 | 109 | 25 | 125 | 4 | M16 |
60 | 19 | 129 | 38 | 145 | 4 | M16 | |
80 | 19 | 144 | 46 | 160 | 8 | M16 | |
100 | 19 | 170 | 71.5 | 190 | 8 | M20 | |
125 | 19 | 196 | 95 | 220 | 8 | M24 | |
150 | 29 | 226 | 114 | 250 | 8 | M24 | |
200 | 29 | 286 | 140 | 310 | 8 | M24 | |
250 | 38 | 343 | 188 | 370 | 12 | M27 | |
300 | 51 | 403 | 216 | 370 | 12 | M27 | |
350 | 55 | 460 | 263 | 430 | 16 | M30 | |
400 | 55 | 517 | 305 | 490 | 16 | M33 | |
450 | 60 | 567 | 356 | 550 | 20 | M33 | |
500 | 70 | 622 | 406 | 600 | 20 | M33 | |
600 | 78 | 734 | 482 | 770 | 20 | M36 |
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