... ,Gr12 3. Professional Tech Support Gr2 Titanium reducing flange ANSI B16.5 for pressure vessel 1. Material:Gr1,Gr2,Gr5,Gr7,Gr9,Gr12 ... 2.Size:1/2''~80''(DN10~600) 3.Pressure rating: 0 ... ,CL900,CL1500 5. Working temperature: -60°C~250°C 6. Flange surface: FF,RF,TG,RJ etc 7.Quality control: Ultrasonic ...