... F44, F51, SUS304/304L, F304/304L, F321, F304H, F347 Stainless steel Blind Flanges 1. Standard: DIN, ANSI/ASME B16.5, GOST, EN1092 ... productioni comes to 5000 tons of the stainless steel flanges, duplex flange and alloy steel flange, which can be used in ... pharmacy, tube, pipe industry, oil and gas industry, space, machinery accessory etc... Stainless steel Blind ...