英寸对照表.docx

管件尺寸英寸毫米对照表管根据使用环境和压力公称压力不同，相同公称通径的管子可能有不同的管径，希望说明使用条件和公称压力PN，以及温度-压力额定值(Pressure/temperatureRatings)并且，不同材质的管在相同的公称压力下，也可能有不同的外径公称直径(nominaldiameter)，又称平均外径(meanoutsidediameter)。这是缘自金属管的管璧很薄，管外径与管内径相差无几，所以取管的外径与管的内径之平均值当作管径称呼。因为单位有公制(mm)及英制(inch)的区分，所以有下列的称呼方法。1.以公制(mm)为基准，称DN(metricunit)2.以英制(inch)为基准，称NB(inchunit)3.DN(nominaldiameter)NB(nominalbore)OD(outsidediameter)4.【例】镀锌钢管DN50，sch20镀锌钢管NB2”，sch205.外径与DN，NB的关系如下：DN(mm)--------NB(inch)-------OD(mm)15--------------1/2--------------21.320--------------3/4--------------26.725--------------1----------------33.432--------------11/4-----------42.240--------------11/2-----------48.350--------------2----------------60.365--------------21/2-----------73.080--------------3----------------88.9100--------------4------------114.3125--------------5------------139.8150--------------6------------168.3200---------------8------------219.1英寸对照表
外径壁厚重量英寸毫米.单位毫米.英寸.公斤/米.磅/英尺.1/8"10.310S1.240.0490.280.191/8"10.3STD-401.730.0680.370.251/8"10.3XS-802.410.0950.480.321/4"13.710S1.650.0650.50.341/4"13.7STD-402.240.0880.640.431/4"13.7XS-803.020.1190.810.553/8"17.110S1.650.0650.640.433/8"17.1STD-402.310.0910.850.573/8"17.1XS-803.20.1261.110.751/2"21.35S1.050.0420.530.361/2"21.310S2.110.0831.010.681/2"21.3STD-402.770.1091.280.861/2"21.3XS-803.730.1471.631.11/2"21.31604.780.1881.971.331/2"21.3XXS7.470.2942.571.733/4"26.75S1.650.0651.030.693/4"26.710S2.110.0831.290.873/4"26.7STD-402.870.1131.71.143/4"26.7XS-803.910.1542.221.493/4"26.71605.560.2192.931.973/4"26.7XXS7.820.3083.682.481"33.45S1.650.0651.310.881"33.410S2.770.1092.121.421"33.4STD-403.380.1332.531.71"33.4XS-804.550.1793.272.181"33.41606.350.254.282.881"33.4XXS9.090.3585.513.7111/4"42.25S1.650.0651.671.1211/4"42.210S2.770.1092.721.8311/4"42.2STD-403.560.143.432.3111/4"42.2XS-804.850.1914.513.0311/4"42.21606.350.255.673.8111/4"42.2XXS9.70.3827.855.2811/2"48.35S1.650.0651.921.2911/2"48.310S2.770.1093.142.1111/2"48.3STD-403.680.1454.092.7511/2"48.3XS-805.080.25.473.6811/2"48.31607.140.2