Standard: ANSI B16.5 Class:150, 300, 600, 900, 1500, 2500 Size: 1/2" - 24" Type: WN, SO, SW, TH, BL We Zhejiang ... Petrochemical, Energy, Nuclear, Automotive, Military, and so on..ANSI B16.5 FlangeClass:- 150, 300, 400, 600, 900, 1500, 2500Size:- 1/2" ... alloy GH600, GH3128, GH3030, GH2132, GH1140Our standard Flanges:- ANSI B16.5, B16.47- ASME B16.5, B16.47- JIS B2220- BS10, BS3293, BS4504- DIN 2502, ...