常用钢管规格DN对照表

1、常用钢管规格DN对照表合金钢管中DN代表什么意思丨常用钢管规格DN对照表DN15-巾18mm,DN20-巾25mmDN25-巾32mm,DN32-巾38mmDN40-巾45mm,DN50-巾57mmDN65-巾73mm,DN80-巾89mmDN100-巾108mm,DN125-巾133mmDN150-巾159mm,DN200-巾219mmDN250-巾273mm,DN300-巾325mmDN350-巾377mm,DN400-巾426mmDN450-巾480mm,DN500-巾530mmDN600-巾630mm焊接钢管规格尺寸大全外径（毫米）壁厚（毫米）2.5344.555.566.577.5理

2、论重量（公斤/米）321.822.152.462.763.053.333.593.854.094.324.53382.192.592.983.353.724.074.414.745.055.355.64422.442.893.353.754.164.564.955.335.696.046.38452.623.113.584.044.494.935.365776.176.566.94502.933.484.014.545.055.556.046.516.977.427.8654-3.774.364.935.496.046.587.107.618.118.6057-4.004.625.235.83

3、6.416.997.558.108.639.1660-4.224.885.526.166.787.397.998.589.159.7163.5-4.485.185.876.557.217.878.519.149.7510.3668-4.815.576317.057.778.489.179.8610.5311.1970-4.965.746.517.278.018.759.4710.1810.8811.5673-5.186.006.817.608.389.169.9110.6611.3912.1176-5.406.267.107.938.759.5610.3611.1411.9112.6783-6

4、.867.798719.6210.5111.3912.2613.1213.9689-7.388.389.3810.3611.3312.2813.2214.1615.0795-7.908.9810.0411.1012.1413.1714.1915.1916.18102-8.509.6710.8211.9613.0914.2115.3116.4017.48108-10.2611.4912.7013.9015.0916.2717.4418.59114-10.8512.1513.4414.7215.9817.2318.4719.70外径（毫米）壁厚（毫米）2.53卩.5I44.555.566.577.

5、5理论重量（公斤/米）121-11.5412.9314.3015.6717.0218.3519.6820.99127-12.1313.5915.0416.4817.9019.3220.7222.10133-12.7314.2615.7817.2918.7920.2821.7523.21140-15.0416.6518.2419.8321.4022.9624.51146-15.7017.3919.0620.7222.3624.0025.62152-16.3718.1319.8721.6023.3225.0326.73159-17.1518.9920.8222.6424.4526.2428.0216820.1022.0423.9725.8927.7929.6918021.5923.7025.7527.7029.8731.9119423.3125.6027.8230.0032.2834.5020329.1431.503