... specification is as follows:1-American Standard:ANSI B 16.5, ASTM, ASA, API-605, AWWA-C207, MSS-SP44, A105, 150LB, 300LB, 600LB, 900LB ... , T/D, T/E, T/F, AS2129, etc.4-Japanese (JIS) Standard:SS400, SF440, 5K, 10K, 16K, 20K, 30K, SDPFF, SOHFF ...