... Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12 2.Standard:ASME B16.5,ANSI B16.5,DIN2630~2636 3.Flange surface: FF,FG,RJ etc ... . 1.Titanium flange Item nameTitanium flange ASME/ANSI B16.5,DIN2630~2633,BS etcMaterialGr1,Gr2,Gr5,Gr7,Gr9,Gr12Size1 ... 25/////balGr 50.050.080.0150.400.205.5~6.753.5~4.5///balGr 70.030.080.0150.300.25// ... the other client needs. Standard Gr2 titanium flange ASME B16.5 for machine equipments