... 13 (6)BS4504 SANI1123 1000/3 1600/3 2500/3 T/D T/E T/F (7) AS2129 TABLE D TABLE H TABLE ... E(8) GOST 12820-80 12821-80 FLANGE2.1/2(DN15) ... to America, Canada, Germany, Spain,, nertherland ,Russia, Italy ,U.A,E, Malaysia , Japan, South Korea so on. forged steel flange