... -ON WELD NECK BLIND THREAD 1)Name: carbon steel flange &forged flanges2)Materials : ASTM A105,DIN ST37 ... TUV CERT ,ISO9001 - 2000, WO , PED.7)Standard: ANSI B16.5, B16.47, MSS, SP-44, AWWA, API ... , JIS, HG, GB, JG, BS.8)All the flanges are according to the ASTM, BS, DIN, JIS, EN ... and unconventional parts, our forging flanges consist of 30 specifications derived from 7 standards, i.e. ANSI ,API ,MSS ,AWWA ...