Standard: ANSI B16.5 Class:150, 300, 600, 900, 1500, 2500 Size ... , Energy, Nuclear, Automotive, Military, and so on..ANSI B16.5 FlangeClass:- 150, 300, 400, 600, 900, 1500, 2500Size ... " -24"Types: - Welding Neck (WN), Slip-on (SO), Blind (BL), Socket Weld (SW), Lap Joint, Threaded (TH), Orifice ... GH3030, GH2132, GH1140Our standard Flanges:- ANSI B16.5, B16.47- ASME B16.5, B16.47- JIS B2220- BS10, BS3293, ...