Water treatment Titanium tube Gr.1 Gr.2 Gr.7 GR12 Size: ... , metallurgy industry, Electrolytic Plating, medical industry, power plant, Aerospace, petrochemical industry, navigation.Grade 1. Pure Titanium, relatively low strength and high ductility ... . Grade 2. The pure titanium most used. The best combination of strength, ductility and ...