... ,Gr5,Gr7,GR9,Gr12... stric quality testing experienced skilled workers ASTM B338 Titanium Pipes(1) Size: OD(6-219)mm*WT ... ,Gr2,Gr3,Gr5,Gr9,Gr12 (3) Standard: ASTM B338/ ASTM /B862/ DIN 17866(4) Allowable Deviation of Outer Diameter (mm)(5) Allowable Deviation ... in "The Titanium Valley",We has specalizing in Titanium Product for 10 years, has formed skilled workers. If any question,Pls ...