... UNI. Carbon Steel Flange,high quality carbon steel flange,professional supplier of carbon steel flange1.flange Size:DN15-2000 2.flange Material:A105,SS400 ... ,RST37.2, S2353.flange standards:ANSI,JIS,DIN, ... GOST 12820-80,SABS1123,EN1092-1,UNI.1. Standard:(forged flange)ANSI,JIS,DIN,BS4504,SABS1123,EN1092-1, UNI,AS2129,GOST ...