stainless steel flangestandard: DIN,EN1092-1,ASME,AS2129,UNI,GOST,BS....nonstandard: as customer's drawingDN15-DN36001.4541,1.4571,1.4404,F304,304L,F316,316L,1.4301.....PED-TUV,ISO9001

DIN carbon steel flangeDN15-DN3600PED-TUV,ISO9001RST37-2/S235JRG2,C22.8/P25GH,S355J2G3,P245GH,P265GH,A105......