... titanium pipe 1.ASTM B338, ASTM B337, ASTM B861Gr1, Gr2, Gr3, Gr4 Gr5, Gr7, Gr9, Gr11, Gr12, Gr19, Gr23Outer Diameter: 3 ... alloyseamless/welded and polished, rolled3. Allowable Deviation of Outer Diameter (mm)Outer DiameterAllowable DeviationOuter DiameterAllowable Deviation3~10±0.15>50 ... +6 ; L ≥ 6000 +10 6. Curvature of Titanium TubeOuter Diameter (mm)Curvature (mm/m, not more than)≤303>30~11047 ...