grade 3 titanium tube astm b338 1)Standard:ASTM B337, B338, B861, B862 ... ,5,7,9, etc 3)Dia. 4~114mm grade 3 titanium tube astm b338Our titanium tubes are manufactured according to ASTM, AMS, DIN ... and some other world-wide recognized standards. Titanium Alloy Tube Titanium Tube, Titanium pipe, Titanium tubing pipe SpecificationsStandardASTM B337, B338, B861, B862MaterialGR1,GR2 ...