A. DN400鋼管的壁厚有哪幾種每米重量是多少
有14種或者更多壁厚呢!DN400是公稱通經400,對應外徑是406.40mm,壁厚分別有:4.191mm;4.775mm;6.350mm;7.925mm;9.525mm;12.7mm;16.662mm;12.7mm;21.412mm;26.187mm;30.937mm;36.5mm;40.462mm需要壁厚表的聯系:QQ16706041