steel flange Size:DN10-DN4000 Standard:ISO,JIS,DIN,GB WT:Sch5- ... flangeStandardISO,ANSI,JIS,DIN,GBSizeDN10-DN4000MaterialCarbon steel:20#,Q235,16Mn,ASTM,A234,A105Alloy steel:16MnRApplication rangePetroleum,chemical,power,gas,metallurgy,shipbuilding ... price.Other special design available according to customers’ demand Steel Flange