... 1.Material:Gr1, Gr2, Gr3, Gr4, Gr5, GR7, GR9, GR11, GR12 etc 2.OD:4mm-130mm W.T:0.4-10mm ... used mostly in the golf clubs and bicycle girders.Alloy Gr12, it has the similar properties with the grade7. Second Point ... -6Al-4V, Ti6Al4V, Ti-6-4), Gr6,Gr7,Gr9,Gr11,Gr12,Gr23 (Ti6Al4V ELI, Ti-6Al-4V ELI, Ti-6-4 ...