... used for Flanges are ASTM SA/A 182 Stainless Steel, European Standard Stainless Steel Etc Mainly Material(Grade) we used for our ... , F304L, F316, F316L, F321, F316 Ti, Etc1.4301,1.4306,1.4401,1.4404,1.4541,1.4571,EtcSUS F304, F304L, F316, F316L, F321, F316 ... Ti, EtcMainly Flange Standards we Produced and Supplied:1) DIN 2527 (PN6, PN10, PN16 PN25, PN40),DIN 2533, DIN ...