1.Nominal diameter:2"~72" 2.Nominal pressure:150Lb 3.Medium:sea water, corrosive water. Nominal diameter2"~8"Applicable medium air, water, steam, gas as well as weak corrosive media, such as acid, alkali, and salt and so on.Design and test standardsAWWA C504Connecting flange accord withANSI B16.1,ANSI/AWWA C111/A21.11 Materials of main parts HT200,QT450,WCB Pressure levelsAWWA C504 25B,50B,75B, ...