... BS,etc ansi b16.5 socket welding flange1.Material:304 304L 316 316L 321 and so on 2.Size ... ,etc1.Materials, Grades (stainless steel) Available:EN 10222-5(DIN17440) 1.4301, 1.4306(1.4307), 1.4401 ... SUS F321 etc2.Mainly Flange Standards Available:1) ANSI B16.5 (150LBS-2500LBS) Blind/ Slip-on/Welding Neck (SCH ... Flanges3.Sealing Surface:FF, RF, LJ, TG, FM, and R.T.J. Other products: If you have any question, ...