... :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 ... -corrosion,acid and alkalis resistant, long service life.Connection: flange nut, bolt connection.Manufacturing standard: GB, American Standard, Russian Standard, JIS ...