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1、管径/流速/流量对照表管径单位：DN管径流量流速1大25017.6735.3453.0170.6988.36106.03123.70141.37159.04176.71194.39212.06229.73247.40265.07282.74300.41318.09335.76353.43371.10388.77406.44流速单位：m/s250.180.350.530.710.881.061.241.411.591.771.942.122.302.472.652.833.003.183.363.533.713.894.06流量单位：m3/h圆周率（π）：3.1415926管道管径规格500.711.412.122.833.534.244.955.656.367.077.788.489.199.9010.6011.3112.0212.7213.4314.1414.8415.5516.26小（DN）30025.4550.8976.34101.79127.23152.68178.13203.58229.02254.47279.92305.36330.81356.26381.70407.15432.60458.04483.49508.94534.38559.83585.28200.110.230.340.450.570.680.790.901.021.131.241.361.471.581.701.811.922.042.152.262.382.492.60320.290.580.871.161.451.742.032.322.612.903.183.473.764.054.344.634.925.215.505.796.086.376.66400.450.901.361.812.262.713.173.624.074.524.985.435.886.336.797.247.698.148.609.059.509.9510.40651.192.393.584.785.977.178.369.5610.7511.9513.1414.3415.5316.7217.9219.1120.3121.5022.7023.8925.0926.2827.48。

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