... steel) Available:EN10222-5/DIN17440: 1.4301, 1.4306/1.4307, 1.4401, 1.4404 and 1.4541, 1.4571 etc.ASTM SA/A182 F304 ... SUS F316, SUS F316L, SUS F321 etcMainly Flange Standards Available:1) ANSI B16.5 150LBS (300LBS, 600LBS, 900LBS,1500LBS, ... weld/ Threaded/ Lap Joint FlangeANSI B16.47 Series A/B Blind/Weld Neck Flanges2) DIN 2527 (PN6, PN10, ... RF, LJ, TG, MF, M and R.T.J. (RJ). EN10222-5 1.4541 FLANGES