螺纹法兰TH
螺纹法兰 ASME/ANSI B16.5 Class 300 TH
2020-12-30螺纹法兰标准尺寸及重量（ASME/ANSI B16.5 Class 300 TH）
| 尺寸规格 | 法兰外径 | 突面外径 | 法兰最小厚度 | 颈部直径 | 含颈高度 | 最小螺纹长度 | 法兰内径 |
螺纹定位孔直径 Min. |
螺栓孔中心距 | 螺栓孔直径 | 螺栓孔数量 | 近似重量kgs |
| NPS | O | R | tf | X | Y | T | B | Q | W | I | n | |
| 1/2 | 95 | 34.9 | 12.7 | 38 | 21 | 16 | 22.2 | 23.6 | 66.7 | 15.9 | 4 | 0.65 |
| 3/4 | 115 | 42.9 | 14.3 | 48 | 24 | 16 | 27.7 | 29.0 | 82.6 | 19.1 | 4 | 1.08 |
| 1 | 125 | 50.8 | 15.9 | 54 | 25 | 18 | 34.5 | 35.8 | 88.9 | 19.1 | 4 | 1.39 |
| 1 1/4 | 135 | 63.5 | 17.5 | 64 | 25 | 21 | 43.2 | 44.4 | 98.4 | 19.1 | 4 | 1.74 |
| 1 1/2 | 155 | 73.0 | 19.1 | 70 | 29 | 23 | 49.5 | 50.3 | 114.3 | 22.2 | 4 | 2.49 |
| 2 | 165 | 92.1 | 20.7 | 84 | 32 | 29 | 61.9 | 63.5 | 127.0 | 19.1 | 8 | 2.90 |
| 2 1/2 | 190 | 104.8 | 23.9 | 100 | 37 | 32 | 74.6 | 76.2 | 149.2 | 22.2 | 8 | 4.35 |
| 3 | 210 | 127.0 | 27.0 | 117 | 41 | 32 | 90.7 | 92.2 | 168.3 | 22.2 | 8 | 5.89 |
| 3 1/2 | 230 | 139.7 | 28.6 | 133 | 43 | 37 | 103.4 | 104.9 | 184.2 | 22.2 | 8 | 7.48 |
| 4 | 255 | 157.2 | 30.2 | 146 | 46 | 37 | 116.1 | 117.6 | 200.0 | 22.2 | 8 | 9.77 |
| 5 | 280 | 185.7 | 33.4 | 178 | 49 | 43 | 143.8 | 144.4 | 235.0 | 22.2 | 8 | 12.31 |
| 6 | 320 | 215.9 | 35.0 | 206 | 51 | 47 | 170.7 | 171.4 | 269.9 | 22.2 | 12 | 16.07 |
| 8 | 380 | 269.9 | 39.7 | 260 | 60 | 51 | 221.5 | 222.2 | 330.2 | 25.4 | 12 | 24.07 |
| 10 | 445 | 323.8 | 46.1 | 321 | 65 | 56 | 276.2 | 276.2 | 387.4 | 28.6 | 16 | 34.38 |
| 12 | 520 | 381.0 | 49.3 | 375 | 71 | 61 | 327.0 | 328.6 | 450.8 | 31.8 | 16 | 49.80 |
| 14 | 585 | 412.8 | 52.4 | 425 | 75 | 64 | 359.2 | 360.4 | 514.4 | 31.8 | 20 | 70.12 |
| 16 | 650 | 469.9 | 55.6 | 483 | 81 | 69 | 410.5 | 411.2 | 571.5 | 34.9 | 20 | 89.56 |
| 18 | 710 | 533.4 | 58.8 | 533 | 87 | 70 | 461.8 | 462.0 | 628.6 | 34.9 | 24 | 108.10 |
| 20 | 775 | 584.2 | 62.0 | 587 | 94 | 74 | 513.1 | 512.8 | 685.8 | 34.9 | 24 | 134.87 |
| 24 | 915 | 692.2 | 68.3 | 702 | 105 | 83 | 616.0 | 614.4 | 812.8 | 41.3 | 24 | 202.58 |
| 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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