... size: from 1/2''_80'' standard:ASME material: stainless qualification: ISO9001 standard stainless steel flange asme 1/2" to 24" ASME B16.526 ... ,)Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321,F347,F310F44F51,A276 S31803, A182, F43, A276 S32750,A705 631,632,A961, A484, Alloy steel ... , papermaking, construction, etcSpecial design available as the requirement of customer stainless steel flanges