... .47 Flange, DIN Standard Flange, EN1092-1 Flange 3) EN10204 3.1 Certificate Flanges Standard: 1)ANSI B16.5 Class150,300,600,900, ... 3, NP/4, NP/8, (NP=600 kpa, 1000kpa,1600kpa, 2500kpa, 4000kp )FlangeMaterial:1.4404/F316L ,1.4301/F304, 1.4401/F316,1.4307/F304L ,1 ... .4541/F321, F316Ti/1.4571 Etc F316Ti/1.4571 Flanges