Tube--titanium pipes: 1,confirms to all test certifications 2,good quality & widely ... ,multi model for choice The feature of our Tube--titanium pipes: 1.material:Gr1,Gr2,Gr3,Gr4,Gr5,GR7,GR9,GR11 ... Titanium.CP grade 3 is almost only used in the pressure vessel.CP grade 4 can be used in some fittings ... advanced quality and resonable price ,welcome any inquiries! Tube--titanium pipes