... ANSI,DIN,JIS,BS,KS4.Specification SIZESTANDARDSERIESPRESSURE11/2''-64''ASTM ANSI B16.5, ASA, API-605,etc..slip-on, welding neck, blind, ... 2572, 2631, 2576, 2632,2633, 2543, 2544, etcplate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150041/2''-64 ... etc.plate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150051/2''-64''JIS 5K, 10K, 16K, 20K etc.plate, slip ...