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| ���Q������MPa) | 0.05 |
| ���wԇ�� | 0.1 |
| �m�Üض� | 450��;600��;900�� |
| �m�ý��|(zh��) | ���L(f��ng)������,��ȼ�� |
| ���|(zh��)���� | ≤50m/s |
| й© | 1% |
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| ���|(zh��)�ض� | ≤450�� | ≤600�� |
| �y�w���� | �i䓻��t�t�f | �t�f�,���t��� |
| ������� | �i䓻��t�t�f | �t���P� |
| �y�S���� | �t���P� | �t���P� |
��,��D641W���ͨ�L(f��ng)���y��Ҫ�B�ӳߴ缰����
| DN | D | D1 | n-do | b | L | ���� | ||
| D41 | D341 | D941 | ||||||
| 200 | 320 | 280 | 8-18 | 16 | 140 | 34 | 42 | 78 |
| 250 | 375 | 335 | 12-18 | 16 | 140 | 38 | 46 | 83 |
| 300 | 440 | 395 | 12-22 | 16 | 170 | 48 | 54 | 93 |
| 350 | 490 | 445 | 12-22 | 16 | 170 | 56 | 64 | 95 |
| 400 | 540 | 495 | 16-22 | 16 | 190 | 73 | 81 | 98 |
| 450 | 595 | 550 | 16-22 | 16 | 190 | 81 | 110 | 140 |
| 500 | 645 | 600 | 20-22 | 16 | 190 | 99 | 128 | 179 |
| 600 | 755 | 705 | 20-26 | 18 | 210 | 127 | 157 | 213 |
| 700 | 860 | 810 | 24-26 | 18 | 210 | 152 | 199 | 267 |
| 800 | 975 | 920 | 24-30 | 18 | 210 | 182 | 229 | 326 |
| 900 | 1075 | 1020 | 24-30 | 18 | 250 | 240 | 287 | 385 |
| 1000 | 1175 | 1120 | 28-30 | 18 | 250 | 383 | 430 | 528 |
| 1100 | 1275 | 1220 | 28-30 | 18 | 250 | 620 | 682 | |
| 1200 | 1375 | 1320 | 32-30 | 18 | 250 | 765 | 827 | |
| 1400 | 1575 | 1520 | 36-30 | 18 | 300 | 1188 | 1250 | |
| 1600 | 1790 | 1730 | 40-30 | 22 | 300 | 1393 | 155 | |
| 1800 | 1990 | 1930 | 44-30 | 22 | 300 | 1800 | 1865 | |
| 2000 | 2190 | 2130 | 48-30 | 22 | 300 | 2130 | 2190 | |
| 2100 | 2300 | 2240 | 52-33 | 22 | 300 | 2785 | ||
| 2200 | 2405 | 2340 | 52-33 | 26 | 350 | 3690 | ||
| 2400 | 2605 | 2540 | 56-33 | 26 | 350 | 4720 | ||
| 2600 | 2805 | 2740 | 60-33 | 26 | 350 | 5530 | ||
| 2800 | 3030 | 2960 | 64-36 | 26 | 400 | 6035 | ||
| 3000 | 3230 | 3160 | 68-36 | 26 | 400 | 6280 | ||
