Class2500(PN420)法兰盖的尺寸 - HG/T 20615-2009
发布时间：2022-11-21 点击数：983
Class2500(PN420)法兰盖的尺寸 - HG/T 20615-2009
| DN | NPS | 法兰外径，D | 螺栓孔中心圆直径，K | 螺栓孔直径，L | 螺栓规格 | 螺栓孔数 | 密封面直径 | 密封面高度 | 法兰厚度，C |
| 15 | 1/2 | 135 | 88.9 | 22 | M20 | 4 | 34.9 | 7 | 30.2 |
| 20 | 3/4 | 140 | 95.2 | 22 | M20 | 4 | 42.9 | 7 | 31.8 |
| 25 | 1 | 160 | 108.0 | 26 | M24 | 4 | 50.8 | 7 | 35.0 |
| 32 | 1 ¼ | 185 | 130.2 | 30 | M27 | 4 | 63.5 | 7 | 38.1 |
| 40 | 1 ½ | 205 | 146.0 | 33 | M30 | 4 | 73.0 | 7 | 44.5 |
| 50 | 2 | 235 | 171.4 | 30 | M27 | 8 | 92.1 | 7 | 50.9 |
| 65 | 2 ½ | 265 | 196.8 | 33 | M30 | 8 | 104.8 | 7 | 57.2 |
| 80 | 3 | 305 | 228.6 | 36 | M33 | 8 | 127.0 | 7 | 66.7 |
| 100 | 4 | 355 | 273.0 | 42 | M39 | 8 | 157.2 | 7 | 76.2 |
| 125 | 5 | 420 | 323.8 | 48 | M45 | 8 | 185.7 | 7 | 92.1 |
| 150 | 6 | 485 | 368.3 | 55 | M52 | 8 | 215.9 | 7 | 108.0 |
| 200 | 8 | 550 | 438.2 | 55 | M52 | 12 | 269.9 | 7 | 127.0 |
| 250 | 10 | 675 | 539.8 | 68 | M64 | 12 | 323.8 | 7 | 165.1 |
| 300 | 12 | 760 | 619.1 | 74 | M70 | 12 | 381.0 | 7 | 184.2 |