... Standard: ANSI,DIN,JIS,BS,KS4.Specification SIZESTANDARDSERIESPRESSURE11/2''-64''ASTM ANSI B16.5, ASA, API-605 ... lap-joint, etc.Class150,300,600,900,150021/2''-64''EN 1092,etc…plate, slip-on, blind etc. ... Class150,300,600,900,150031/2''-64''DIN2573, 2572, 2631, ... neck, blind, threaded etc.Class150,300,600,900,150041/2''-64''BS4504, PN16, PN25, PN40, etc.plate, ...