1. flange manufacture with many years of exporting 2. din standard flange 3. ISO9001:2000, ISO14004:2004, PED, AA+credit Flange Size: DN10-DN1000Type: SO, WN, SW, BL, PL, THD, LWN, LJ, RED and SBLStandard: ANSI,AWWA, API, MSS, DIN, BS, JIS, UNI, KS and EN1092.Material: Carbon Steel - A105, A350LF2, S235JRG2 RST37.2 and so onStainless Steel - A182 F304, A182 F304L, A182 F316, A182 F316LAlloy Steel ...