... and 20K. We can provide flange as following: SIZESTANDARDSERIESPRESSURE11/2”—64”ASTM ANSI B16.5, ASA, API-605,etc..slip-on, welding neck, blind, threaded ... 2631, 2576, 2632,2633, 2543, 2544, etcplate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150041/2”—64”BS4504 ... , PN16, PN25, PN40, etc.plate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150051/2”—64”JIS ...