Gr2 titanium flange 1. Material: Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12 2. Standard:ASME/ANSI B16.5, DIN2633, DIN1092, GOST12815, AS, BS Titanium Flanges1 ... , GOST12815, AS, BS3. Material:Titanium grade 1(GR1),Titanium grade 2(GR2),Titanium grade 5(GR5),Titanium 6Al4V,Titanium grade 7(GR7),Titanium grade 9(GR9)4 ...