公称尺寸 | 钢管外径 | 连接尺寸 | 密封面 | 法兰厚度 | 法兰高度 | 法兰颈大端 | 最小螺纹长度 | 最小沉孔直径 | ||||||
法兰外径 | 螺栓孔中心圆直径 | 螺栓孔直径 | 螺栓孔数量 | |||||||||||
NPS | DN | A | D | K | L | n | X | f1 | C | H | N | R | Tmin | Qmin |
1/2 | 15 | 21.3 | 95 | 66.7 | 16 | 4 | 34.9 | 2 | 12.7 | 21 | 38 | ≥4 | 16 | 23.6 |
3/4 | 20 | 26.9 | 115 | 82.6 | 19 | 4 | 42.9 | 2 | 14.3 | 24 | 48 | 16 | 29 | |
1 | 25 | 33.7 | 125 | 88.9 | 19 | 4 | 50.8 | 2 | 15.9 | 25 | 54 | 18 | 35.8 | |
1 1/4 | 32 | 42.4 | 135 | 98.4 | 19 | 4 | 63.5 | 2 | 17.5 | 25 | 64 | 21 | 44.4 | |
1 1/2 | 40 | 48.3 | 155 | 114.3 | 22 | 4 | 73 | 2 | 19.1 | 29 | 70 | 23 | 50.3 | |
2 | 50 | 60.3 | 165 | 127 | 19 | 8 | 92.1 | 2 | 20.7 | 32 | 84 | 29 | 63.5 | |
2 1/2 | 65 | 76.1 | 190 | 149.2 | 22 | 8 | 104.8 | 2 | 23.9 | 37 | 100 | 32 | 76.2 | |
3 | 80 | 88.9 | 210 | 168.3 | 22 | 8 | 127 | 2 | 27 | 41 | 117 | 32 | 92.2 | |
4 | 100 | 114.3 | 255 | 200 | 22 | 8 | 157.2 | 2 | 30.2 | 46 | 146 | 37 | 117.6 | |
5 | 125 | 139.7 | 280 | 235 | 22 | 8 | 185.7 | 2 | 33.4 | 49 | 178 | 43 | 144.4 | |
6 | 150 | 168.3 | 320 | 269.9 | 22 | 12 | 215.9 | 2 | 35 | 51 | 206 | 47 | 171.4 | |
8 | 200 | 219.1 | 380 | 330.2 | 26 | 12 | 269.9 | 2 | 39.7 | 60 | 260 | 51 | 222.2 | |
10 | 250 | 273 | 445 | 387.4 | 29 | 16 | 323.8 | 2 | 46.1 | 65 | 321 | 56 | 276.2 | |
12 | 300 | 323.9 | 520 | 450.8 | 32 | 16 | 381 | 2 | 49.3 | 71 | 375 | 61 | 328.6 | |
14 | 350 | 355.6 | 585 | 514.4 | 32 | 20 | 412.8 | 2 | 52.4 | 75 | 425 | 64 | 360.4 | |
16 | 400 | 406.4 | 650 | 571.5 | 35 | 20 | 469.9 | 2 | 55.6 | 81 | 483 | 69 | 411.2 | |
18 | 450 | 457 | 710 | 628.6 | 35 | 24 | 533.4 | 2 | 58.8 | 87 | 533 | 70 | 462 | |
20 | 500 | 508 | 775 | 685.8 | 35 | 24 | 584.2 | 2 | 62 | 94 | 587 | 74 | 512.8 | |
24 | 600 | 610 | 915 | 812.8 | 42 | 24 | 692.2 | 2 | 68.3 | 105 | 702 | 83 | 614.4 |
制造标准 | 压力等级 | 制造标准 | 压力等级 |
GB/T 9114 | PN6 | HG/T 20592 | PN6 |
PN10 | PN10 | ||
PN16 | PN16 | ||
PN25 | PN25 | ||
PN40 | PN40 | ||
PN63 | HG/T 20615 | Class150 | |
PN100 | Class300 | ||
Class150 | ASME B16.5 | Class150 | |
Class300 | Class300 | ||
Class600 | Class600 | ||
Class900 | Class900 | ||
Class1500 | DIN 2565 | PN6 | |
Class2500 | DIN 2566 | PN10/PN16 | |
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