... flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ,ASTM A350 ,ASTM ... CERT ,ISO9001 - 2000, WO , PED.7)Standard: ANSI B16.5, B16.47, MSS, SP-44, AWWA, API, ... DIN, JIS, HG, GB, JG, BS.8)All the flanges are according to the ASTM ... company LTD . engaged inforging of varieties of flange, axis , disk ,and unconventional parts, ...