... C22.8/P250GH, A105/SS400. Size: DN15-DN2500. ASTM a182 f316l flanges The specification is as follows:1-American ... Standard:ANSI B 16.5, ASTM, ASA, API-605, AWWA-C207, MSS-SP44, A105 ... .;3-British Standard:BS4504, NP16, NP25, NP40, BS10, TABLE D, TABLE E, TABLE H, BS10, BS4504, SAN1123, 1000/3 ... , 1600/3, 2500/3, T/D, T/E, T/F, AS2129, etc.4-Japanese (JIS) ...