Titanium Pipe Fitting: Grades:1, 2, 3, 5 Specification: ASTM B363, ASME SB363 The sizes of the fittings can be in ANSI B16.9 Titanium Pipe Fitting:Grades: 1, 2, 3, 5Specification: ASTM B363, ASME SB363The sizes of the fittings can be in ANSI B16.9 and ASME B16.9. Titanium Pipe Fitting