... 1) Standard:ANSI, ASME, DIN, JIS, BS and so on2) Material available:stainless steel, carbon steel, alloy steel and so on3 ... class:PN6-64, 150LBS-2500LBS, 5K-20K4) Flange type:slip-on flange, welding neck flange, blind flange, socket welding flange,threaded ...