1. 镀锌钢管DN50每米可以装多少水DN65 DN80 DN100 DN125 DN150 DN200 每个规格分别每米可装水多少
DN50指的是内径50毫米。每米装水0.00196立方米。回DN65, 0.00331立方米水答DN80,0.0050DN100,0.00785DN125,0.012DN150,0.0176DN200,0.0314