... ,Gr9,Gr12 3. Professional Tech Support Gr2 Titanium welding neck flange DIN2630~2636 1. Material:Gr1,Gr2,Gr5,Gr7,Gr9,Gr12 2.Size ... ,CL900,CL1500 5. Working temperature: -60°C~250°C 6. Flange surface: FF,RF,TG,RJ etc 7.Quality control: Ultrasonic ... as per clients request 9. Standard: ASME/ANSI B16.5,DIN2630~2633,BS etc