... 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 ... : WN, SW, TF, LJ, SO, BL, PL... 4. Face type: RF, FF, RTJ... We are specialized in the forged flange. Our annual productioni comes to 5000 ...