Standard: ANSI B16.47 Class:150, 300, 600, 900 Size: 26" - 60 ... Petrochemical, Energy, Nuclear, Automotive, Military, and so on..ANSI B16.47 FlangeClass:- 150, 300, 400, 600, 900Size:- 26" -60" ... 800H, 800HT, 825, 890, 901, 925, 926- Hastelloy B, B-2, C-22, C-276- Special Stainless Steel F309, ... , GH1140Our standard Flanges:- ANSI B16.5, B16.47- ASME B16.5, B16.47- JIS B2220- BS10, BS3293, BS4504- DIN ...