1、管管径径/流流速速/流流量量对对照照表表管管径径(DN)流流量量 m m3 3/h/h0.4m/s0.6m/s0.8m/s1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s2.2m/s2.4m/s2.6m/s2.8m/s3.0m/s内内面面积积m m2 2200.50.70.91.11.41.61.82.02.32.52.72.93.23.40.000314250.71.11.41.82.12.52.83.23.53.94.24.64.95.30.000491321.21.72.32.93.54.14.65.25.86.46.97.58.18.70.000804401.8
2、2.73.64.55.46.37.28.19.010.010.911.812.713.60.001257502.84.25.77.18.59.911.312.714.115.617.018.419.821.20.001963654.87.29.611.914.316.719.121.523.926.328.731.133.435.80.003318807.210.914.518.121.725.329.032.636.239.843.447.050.754.30.00502710011.317.022.628.333.939.645.250.956.562.267.973.579.284.80
3、.00785412517.726.535.344.253.061.970.779.588.497.2106.0114.9123.7132.50.01227215025.438.250.963.676.389.1101.8114.5127.2140.0152.7165.4178.1190.90.01767120045.267.990.5113.1135.7158.3181.0203.6226.2248.8271.4294.1316.7339.30.03141625070.7106.0141.4176.7212.1247.4282.7318.1353.4388.8424.1459.5494.853
4、0.10.049087300101.8152.7203.6254.5305.4356.3407.1458.0508.9559.8610.7661.6712.5763.40.070686350138.5207.8277.1346.4415.6484.9554.2623.4692.7762.0831.3900.5969.81039.10.096211400181.0271.4361.9452.4542.9633.3723.8814.3904.8995.31085.71176.21266.71357.20.125664450229.0343.5458.0572.6687.1801.6916.1103
5、0.61145.11259.61374.11488.61603.21717.70.159043500282.7424.1565.5706.9848.2989.61131.01272.31413.71555.11696.51837.81979.22120.60.196349600407.1610.7814.31017.91221.41425.01628.61832.22035.72239.32442.92646.52850.03053.60.282743管径(DN)流流速速推推荐荐值值m/s:20253240506580100125150200250300350400闭式系统 0.5-0.6 0
6、.6-0.7 0.7-0.90.8-10.9-1.2 1.1-1.4 1.2-1.6 1.3-1.8 1.5-2.0 1.6-2.2 1.8-2.5 1.8-2.6 1.9-2.9 1.6-2.51.8-2.6开式系统 0.4-0.5 0.5-0.6 0.6-0.8 0.7-0.9 0.8-1.0 0.9-1.2 1.1-1.4 1.2-1.6 1.4-1.8 1.5-2.0 1.6-2.3 1.7-2.4 1.7-2.4 1.6-2.11.8-2.3镀锌钢管(外径/内径)：DN15 21.75 16.25 DN20 26.75 21.25 DN25 33.5 27 DN32 42.25 35
7、.75 DN40 48 41 DN50 60 53 DN70 75.5 68 DN80 88.5 80.5 DN100 114 106 DN125 140 131 DN150 165 156 DN200 219 203 DN250 273 257镀锌钢管(外径/内径)：DN15 21.75 16.25 DN20 26.75 21.25 DN25 33.5 27 DN32 42.25 35.75 DN40 48 41 DN50 60 53 DN70 75.5 68 DN80 88.5 80.5 DN100 114 106 DN125 140 131 DN150 165 156 DN200 219
8、 203 DN250 273 257管管径径/流流速速/流流量量对对照照表表管管径径(DN)(DN)流量 m3/h0.8m/s0.6m/s1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s200.90.71.11.41.61.82.02.3251.41.11.82.12.52.83.23.5322.31.72.93.54.14.65.25.8403.62.74.55.46.37.28.19.0505.74.27.18.59.911.312.714.1659.67.211.914.316.719.121.523.98014.510.918.121.725.329.032.6
9、36.210022.617.028.333.939.645.250.956.512535.326.544.253.061.970.779.588.415050.938.263.676.389.1101.8114.5127.220090.567.9113.1135.7158.3181.0203.6226.2250141.4106.0176.7212.1247.4282.7318.1353.4300203.6152.7254.5305.4356.3407.1458.0508.9350277.1207.8346.4415.6484.9554.2623.4692.7400361.9271.4452.4542.9633.3723.8814.3904.8450458.0343.5572.6687.1801.6916.11030.61145.1500565.5424.1706.9848.2989.61131.01272.31413.7600814.3610.71017.91221.41425.01628.61832.22035.7
