Material: 1.4301, 1.4307, 1.4401, 1.4404, 1.4541, 1.4571, 1.4305, 1.4539, F44, F51, SUS304/304L, F304/304L, F321, F304H, F347 Stainless steel Blind Flanges 1. Standard: DIN, ANSI/ASME B16.5, GOST, EN1092-1, HG, UNI, JIS, NFE, GB, BS... 2. Material: 1.4301, 1.4307, 1.4401, 1.4404, 1.4541, 1.4571, 1.4305, 1.4539, F44, F51, SUS304/304L, F304/304L, F321, F304H, F347H, F317L, F316/316L, F316Ti... 3. ...