... 4. ASTM B381,B348,AMS 4928 5.in stock Titanium ring/ discs 1 Grade: Gr1,Gr2,Gr3,Gr4,Gr.5 ... flange, seals, etc.7. Annual Export Quantity: 2000T/year . Quality Assurance ----According to globally recognized standards, such as ASTM, AMS ... clients get the bestproducts. -----ISO Quality ManagementSystem ------More than10 years’ experience, exported variousof titanium products over than 2000 T yearly ...