... :2.0-30mm Suppiy status:R,M Standard:ASTM B337 ASTM B338 etc. titanium alloy tube astm b338,astm b337 gr5 1. Grade: Gr1, gr2, gr3 ... , automotive, biomedical, chemical processing, marine, military, oil, tooling, racing. (1)heat exchangers and condensers(2) all kinds of corrosive fluid transmission ...