公称直径与英寸对照表教学教材.doc

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1、公称直径与英寸对照表______________________________________________________________________________________________________________________________________________________规格大外径mm壁厚mm最小壁厚mm焊管(6米定尺)镀锌管(6米定尺)公称内径英寸米重kg根重kg米重kg根重kgDN151/221.32.82.45    DN203/426.92.82.451.669.961.7610.56DN

2、25133.73.22.82.4114.462.55415.32DN321.2542.43.53.063.3620.163.5621.36DN401. 48.33.53.063.8723.224.1024.60DN50260.33.83.3255.2931.745.60733.64DN652.576.14.03.57.1142.667.53645.21DN80388.94.0 8.3850.288.8853.28DN1004114.34.0 10.8865.2811.5369.18DN12551404.5 15.0490.2415.94298.

3、65DN1506168.34.5 18.18109.0819.27115.62DN2008219.16.0(焊管) 31.53189.18  DN2008219.16.5(热镀锌)   36.12216.7公称通径与英寸对照表__________________________________________________