... , F51, SUS304/304L, F304/304L, F321, F304H, F347 Stainless steel Blind Flanges 1. Standard: DIN, ANSI/ASME B16.5, GOST ... 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 ...