公称尺寸 | 钢管外径 | 连接尺寸 | 法兰厚度 | 法兰内径 | 法兰颈大端 | 法兰高度 | 圆角 | 对焊环 | |||||
法兰外径 | 螺栓孔中心圆直径 | 螺栓孔直径 | 螺栓孔数量 | 高度 | 外径 | ||||||||
DN | NPS | A | D | K | L | n | C | B | N | H | R1 | h | d |
15 | 1/2 | 21.3 | 95 | 66.7 | 16 | 4 | 14.3 | 22.9 | 38 | 22 | 3 | 76 | 34.9 |
20 | 3/4 | 26.9 | 115 | 82.6 | 18 | 4 | 15.9 | 28.2 | 48 | 25 | 3 | 76 | 42.9 |
25 | 1 | 33.7 | 125 | 88.9 | 18 | 4 | 17.5 | 34.9 | 54 | 27 | 3 | 102 | 50.8 |
32 | 1 1/4 | 42.4 | 135 | 98.4 | 18 | 4 | 20.7 | 43.7 | 64 | 29 | 5 | 102 | 63.5 |
40 | 1 1/2 | 48.3 | 155 | 114.3 | 22 | 4 | 22.3 | 50 | 70 | 32 | 6 | 102 | 73 |
50 | 2 | 60.3 | 165 | 127 | 18 | 8 | 25.4 | 62.5 | 84 | 37 | 8 | 152 | 92.1 |
65 | 2 1/2 | 76.1 | 190 | 149.2 | 22 | 8 | 28.6 | 78.5 | 100 | 41 | 8 | 152 | 104.8 |
80 | 3 | 88.9 | 210 | 168.3 | 22 | 8 | 31.8 | 91.4 | 117 | 46 | 10 | 152 | 127 |
100 | 4 | 114.3 | 275 | 215.9 | 26 | 8 | 38.1 | 116.8 | 152 | 54 | 11 | 152 | 157.2 |
125 | 5 | 139.7 | 330 | 266.7 | 30 | 8 | 44.5 | 144.4 | 189 | 60 | 11 | 203 | 185.7 |
150 | 6 | 168.3 | 355 | 292.1 | 30 | 12 | 47.7 | 171.4 | 222 | 67 | 13 | 203 | 215.9 |
200 | 8 | 219.1 | 420 | 349.2 | 33 | 12 | 55.6 | 222.2 | 273 | 76 | 13 | 203 | 269.9 |
250 | 10 | 273 | 510 | 431.8 | 36 | 16 | 63.5 | 277.4 | 343 | 111 | 13 | 254 | 323.8 |
300 | 12 | 323.9 | 560 | 489 | 36 | 20 | 66.7 | 328.2 | 400 | 117 | 13 | 254 | 381 |
350 | 14 | 355.6 | 605 | 527 | 39 | 20 | 69.9 | 360.2 | 432 | 127 | 13 | 305 | 412.8 |
400 | 16 | 406.4 | 685 | 603.2 | 42 | 20 | 76.2 | 411.2 | 495 | 140 | 13 | 305 | 469.9 |
450 | 18 | 457 | 745 | 654 | 45 | 20 | 82.6 | 462.3 | 546 | 152 | 13 | 305 | 533.4 |
500 | 20 | 508 | 815 | 723.9 | 45 | 24 | 88.9 | 514.4 | 610 | 165 | 13 | 305 | 584.2 |
600 | 24 | 610 | 940 | 838.2 | 51 | 24 | 101.6 | 616 | 718 | 184 | 13 | 305 | 692.2 |
制造标准 | 压力等级 | 制造标准 | 压力等级 |
HG/T 20592 | PN6 | HG/T 20615 | Class150 |
PN10 | Class300 | ||
PN16 | Class600 | ||
PN25 | ASME B16.5 | Class150 | |
PN40 | Class300 | ||
GB/T 9122 | PN2.5 | Class600 | |
PN6 | Class900 | ||
PN10 | Class1500 | ||
PN16 | Class2500 | ||
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