... quality & widely usage 3,multi model for choice Titanium tube--round tube:1.material:Gr1,Gr2,Gr3,Gr4,Gr5,GR7,GR9 ... similar properties with the grade 7.4.delivery time:within 15-20days after we receive the receipt of the deposits.We ... advanced quality and resonable price ,welcome any inquiries! Titanium tube--round tube