... , F321, F304H, F347H Flanges: 1. Standard: DIN, ANSI/ASME B16.5, GOST, EN1092-1, HG, UNI, JIS, NFE, GB, BS... 2. Material: 1.4301 ... type: RF, FF, RTJ... We are specialized in the forged flange. Our annual production comes to 5000 tons of the stainless ... steel flanges, duplex flange and alloy steel flange, which can be used in pharmacy, tube, pipe ...