... WT: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, gr5 (ti-6al-4V), ... gr7, gr9, gr122. Standard: ASTM b337, ASTM b338, ASTM b8613. Production description:1) size: Outer diameter ...