... welding neck, slip - on ,socket welding , blind 2)ASME , DIN ASA JIS UNI ,API, 3)ASTM A105, ... Korea&UAE market ect.1)Name: carbon steel flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182 ... CERT ,ISO9001 - 2000, WO , PED.7)Standard: ANSI B16.5, B16.47, MSS, SP-44, AWWA, API, DIN, JIS, ... proposals (2)Production process cut material forged processing machinery packing (3)Certifications