... ASTM 3.gr1,gr2,gr3,gr5,gr9, gr12 titanium pipe connector45D 60D 90D 180D titanium elbowstandard:GB,HG,ASTMmaterial:gr1,gr2,gr3,gr5 ... ,gr9,gr12 Seamless Titanium Tube information:1)Grade: Gr1, ... Gr2, Gr3, Gr5, Gr9, Gr11, Gr12, Gr19, Gr232)Standard: ...