... : titanium and titanium alloys Pure titanium grade: GR1, GR2, GR3, GR4 Titanium alloy grade: GR5 (6% Al, 4%V ... .3.Have obtained the production permission certification.4.Technical Standard of GB3624, GB3625. American Standard ASTM B265 ... tubing , piping7.“First quality, Customer paramount ”Service Introduction:Technical Production department and Strict Quality Control System.High Quality, Reasonable ...