... :ANSI;BS;DIN;ISO ProductFlange ,Steel flange,Carbon steel,carbon steel reducing pipe flangeSize15mm~600mmMaterialCarbon steel(20#,35#,45# etc),Stainless steel,Alloy steel,etcTypereducing flangePressure150lb ~ 3000lbStandardANSI,BS,DIN ... , bolt connection.Manufacturing standard: GB, American Standard, Russian Standard, JIS and so on.Nominal pressure: sch5s, sch10s, sch20s, sch30s, sch40s etc ...