Titanium Rings Gr1 titanium rings for jewelry, Gr5 titanium rings for pipes Dia: Max.500mm and Thickness: 20-29mm Titanium RingsGr1 titanium rings for jewelry, Gr5 titanium rings for pipesGrade: Gr1 titanium rings, Gr2 titanium ring, Gr3 titanium ring, Gr4 titanium ring, Gr5 titanium ring, Gr7 titanium ring, Gr9 Titanium rings, Gr11 titanium ring, Gr12 titanium ring, Gr23 titanium ringStandard: ...