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磨级方网
此表旨在指导您决定适合您的应用程序的网格类型. 而一个特定的网格可以有相同数量的电线/英寸, 不同的线径将改变孔径以及%开放面积. 例如, 选择具有相同孔径的时间待定(拉伸螺栓布)等级与市场等级之间的权衡之一是更大的吞吐量，但同时可能更短的有效筛管寿命.
| 磨级网 | 开放 | 时间待定 | 线径 | 开放的区域 (%) |
| 2 | 0.4460 | 11,328 | 0.0540 | 79.6 |
| 3 | 0.2923 | 7,424 | 0.0410 | 76.7 |
| 4 | 0.2150 | 5,461 | 0.3500 | 74.0 |
| 5 | 0.1680 | 4,267 | 0.0320 | 70.6 |
| 6 | 0.1387 | 3,523 | 0.0280 | 69.6 |
| 7 | 0.1149 | 2,918 | 0.0280 | 64.8 |
| 8 | 0.1000 | 2,540 | 0.0250 | 64.0 |
| 9 | 0.0881 | 2,238 | 0.0230 | 62.7 |
| 10 | 0.0800 | 2,032 | 0.0200 | 64.0 |
| 11 | 0.0709 | 1,801 | 0.0200 | 61.0 |
| 12 | 0.0653 | 1,659 | 0.0180 | 60.8 |
| 14 | 0.0544 | 1,382 | 0.0170 | 57.2 |
| 16 | 0.0465 | 1,181 | 0.0160 | 55.4 |
| 18 | 0.0406 | 1,031 | 0.0150 | 53.4 |
| 20 | 0.0360 | 914 | 0.0140 | 51.8 |
| 22 | 0.0320 | 813 | 0.0135 | 49.6 |
| 24 | 0.0287 | 729 | 0.0130 | 47.4 |
| 26 | 0.0275 | 699 | 0.0110 | 51.1 |
| 28 | 0.0257 | 653 | 0.0100 | 51.8 |
| 30 | 0.0238 | 605 | 0.0095 | 51.0 |
| 32 | 0.0223 | 566 | 0.0090 | 50.9 |
| 34 | 0.0204 | 518 | 0.0090 | 48.1 |
| 36 | 0.0188 | 478 | 0.0090 | 45.8 |
| 38 | 0.0178 | 452 | 0.0090 | 45.8 |
| 40 | 0.0165 | 419 | 0.0085 | 43.6 |
| 45 | 0.0142 | 361 | 0.0080 | 40.8 |
| 50 | 0.0125 | 318 | 0.0075 | 39.1 |
| 55 | 0.0112 | 284 | 0.0070 | 37.9 |
| 60 | 0.0102 | 259 | 0.0065 | 37.5 |
