... ~320mm, L< 15m Wall Thickness:0. Titanium Tubes: Grade:GR1,GR2,GR5(Ti6AL4V),GR7,GR12 Standard:ASTM Outer Dia:4mm~320mm, L ... , Gr4, Gr5, Gr7, Gr9, Gr11, Gr12 , Gr23,TI6AL4V ELI etc. Standard: ASTM B337/338 AMSE SB337 /338 ASTM F67/136 AMS ... -resistance. Cp garde 2 is widely used in the commercially pure titanium. Cp grade 3 is almost only used in pressure vessel ...