AIGUO focuses on flanges, mainly including all standard forged flanges(such as EN1092-1, JIS, ANSI, ASME, ASTM, DIN, UNI,BS,AS,GOST), all types of flanges (Blind, Plate, Slip on, Weld neck, Loose, Lap joint, Socket weld, Threaded), also non-standard and special flanges. Welcome to inquiry!