美制锥管螺纹尺寸(NPT)
美制锥管螺纹尺寸(NPT)牙型角=60°
| 美制锥管螺纹尺寸(NPT)-志存密封资料 | |||||||||||||||||
| 公称直径 | 每英寸牙数n | 螺纹 长度 | 螺纹 配合 长度 | 螺牙有效高度(H=h+ 0.5) | 外螺纹直径 | 内螺纹直径 | 底孔 | ||||||||||
| 最小大径 | 最大大径 | 最小中径 | 最大中径 | 最小小径 | 最大小径 | 最大中径 | 最小中径 | 最大小径 | 最小小径 | 最大大径 | 最小大径 | ||||||
| 1/8"NPT | 27 | 9 | 4.1 | 0.815 | 9.641 | 10.29 | 9.233 | 9.897 | 9.082 | 9.489 | 9.475 | 8.826 | 9.082 | 8.263 | 9.897 | 9.078 | 8.00 |
| 1/4"NPT | 18 | 15 | 5.79 | 1.222 | 12.737 | 13.72 | 12.126 | 13.098 | 11.876 | 12.487 | 12.498 | 11.515 | 11.876 | 10.577 | 13.098 | 11.799 | 10.70 |
| 3/8"NPT | 18 | 15 | 6.10 | 1.222 | 16.156 | 17.15 | 15.545 | 16.537 | 15.315 | 15.926 | 15.928 | 14.934 | 15.315 | 13.997 | 16.537 | 15.219 | 14 |
| 1/2"NPT | 14 | 19 | 8.13 | 1.571 | 20.050 | 21.34 | 19.264 | 20.558 | 18.987 | 19.772 | 19.769 | 18.479 | 18.862 | 17.291 | 20.558 | 18.862 | 17.5 |
| 3/4"NPT | 14 | 20 | 8.61 | 1.571 | 25.365 | 26.67 | 24.579 | 25.903 | 24.332 | 25.117 | 25.099 | 23.794 | 24.115 | 22.544 | 25.903 | 24.115 | 23 |
| 1"NPT | 11.5 | 25 | 10.16 | 1.913 | 31.783 | 33.40 | 30.826 | 32.418 | 30.505 | 31.461 | 31.487 | 29.870 | 30.220 | 28.307 | 32.418 | 30.220 | 28.5 |
| 1-1/4"NPT | 11.5 | 25 | 10.67 | 1.913 | 40.508 | 42.16 | 39.551 | 41.174 | 39.262 | 40.218 | 40.247 | 38.595 | 38.945 | 37.032 | 41.174 | 38.945 | 37.5 |
| 1-1/2"NPT | 11.5 | 26 | 10.67 | 1.913 | 46.577 | 48.26 | 45.621 | 47.244 | 45.334 | 46.287 | 46.347 | 44.664 | 44.952 | 43.039 | 47.244 | 44.952 | 43.5 |
| 2"NPT | 11.5 | 26 | 11.07 | 1.913 | 58.590 | 60.33 | 57.633 | 59.282 | 57.369 | 58.325 | 58.417 | 56.677 | 56.965 | 55.052 | 59.282 | 56.965 | 55.5 |
| 2-1/2"NPT | 8 | 39 | 17.32 | 2.750 | 70.451 | 73.03 | 69.076 | 71.534 | 68.784 | 70.159 | 70.281 | 67.701 | 68.784 | 65.264 | 71.534 | 68.013 | 65.5 |
| 3"NPT | 8 | 41 | 19.46 | 2.750 | 86.226 | 88.90 | 84.852 | 87.443 | 84.693 | 86.068 | 86.151 | 83.477 | 84.693 | 80.914 | 87.443 | 83.664 | / |
| 3-1/2"NPT | 8 | 42 | 20.85 | 2.750 | 98.847 | 101.60 | 97.473 | 100.151 | 97.401 | 98.776 | 98.985 | 96.098 | 97.401 | 93.473 | 100.151 | 96.222 | / |
| 4"NPT | 8 | 44 | 21.44 | 2.750 | 111.468 | 114.30 | 110.093 | 112.808 | 110.058 | 111.433 | 111.551 | 108.719 | 110.058 | 105.969 | 112.808 | 108.718 | / |
| 5"NPT | 8 | 46 | 23.80 | 2.750 | 138.299 | 141.30 | 136.925 | 139.787 | 137.037 | 138.412 | 138.511 | 135.550 | 137.037 | 132.675 | 139.787 | 135.424 | / |
| 6"NPT | 8 | 49 | 24.33 | 2.750 | 165.105 | 168.28 | 163.731 | 166.626 | 162.877 | 165.252 | 165.531 | 162.356 | 163.877 | 159.293 | 166.626 | 162.043 | / |
发布时间：2023-05-18 01:38
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