... ANSI B16.5, ASA, API-605,etc..slip-on, welding neck, blind, threaded, lap-joint, etc.Class150,300,600 ... 150041/2''-64''BS4504, PN16, PN25, PN40, etc.plate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900, ... 150051/2''-64''JIS 5K, 10K, 16K, 20K etc.plate, ... feel free to contact us. Carbon Steel Flange (Plate/Slip-On/Welding Neck)