1) Forging Stainless Steel Flange 2) Dual certified to ASME/ASTM SA/A182 and EN10222-5 or DIN17440 3) EN10204 3.1 ... Certificate Materials, Grades (stainless steel) Available:EN 10222-5(DIN17440) 1.4301, 1.4306(1.4307), 1.4401, 1.4404 and 1.4541, 1.4571etc.ASTM ... SUS F316, SUS F316L, SUS F321 etcMainly Flange Standards Available:1) ANSI B16.5 (150LBS-2500LBS) Blind/ Slip-on/Welding ...