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1、以内径为公称直径的椭圆形封头的尺寸、内表面积、容积（mm）公称直径Dg曲面高度H1直边高度H2内表面积（Fm2）容积（Vm2）30075250.1210.00530(350)88250.1600.0080240010025400.2040.2230.01150.0134(450)11225400.2540.2750.01580.01835001252540500.3090.3330.3490.02130.02420.0262(550)1372540500.3700.3960.4130.02770.03130.03366001502540500.4360.4640.4830.03520.0396
2、0.0425(650)1622540500.5070.5380.5580.04420.04930.05267001752540500.5840.6170.6390.05450.06030.06428002002540500.7540.7920.8170.07960.08710.09219002252540500.9450.8801.020.1120.1210.12710002502540501.161.211.240.1510.1620.170(1100)2752540501.401.451.490.1980.2120.22212003002540501.651.711.750.2550.27
3、20.283(1300)3252540501.931.992.030.3210.3410.354公称直径Dg曲面高度H1直边高度H2内表面积（Fm2）容积（Vm2）14003502540502.232.292.330.3980.4210.436(1500)3752540502.552.622.670.4870.5130.53016004002540502.892.973.020.5870.6170.637(1700)4252540503.253.343.390.7000.7340.75718004502540503.643.733.780.8260.8660.889(1900)47525404
4、.054.140.9711.0120005002540504.484.574.631.131.181.20(2100)525405.031.3622005502540505.405.505.571.491.541.58(2300)575406.001.7624006002540506.416.526.601.932.002.0526006502540507.507.637.712.432.512.56280070040508.828.913.123.183000800405010.110.23.823.893200800405011.511.54.614.6934003600380040008
5、5090095010005050505013.014.616.217.95.606.627.759.02常用钢管选型表公称直径外径公称直径外径DN5057DN300325DN7073DN350377DN8089DN400426DN100108DN450480DN125133DN500530DN150159DN600630DN200219DN700720DN250273DN800820 镀锌钢管选型表MM英吋外径牙数61/8102881/413.519103/81719151/221.314203/426.81425133.5113211/442.3114011/2481150260116521/275.51180388.511100411411