1,confirms to all test certifications 2,good quality & widely usage 3,multi model for choice Titanium tube--round tube:1.material:Gr1,Gr2,Gr3,Gr4 ... leangth:up to 15m wall thickness:0.4-10mmCP grade 1 can be used in the deep drawing parts for its ... in advanced quality and resonable price ,welcome any inquiries! Titanium tube--round tube