Product Material Production method State Size(mm) Standad Medical titanium bar Gr1, gr2, gr3, gr5 Hot forging Hot rolling Polishing/latheing R, m 3-200*(500-4000) Gb/t 13810-2007 Astm f67 Astm f136 Titanium bar Gr1, gr2, gr7, gr12 Hot forging Polishing/latheing R, m 4-200*(500-4000) Astm b348 Gb/t 2965-2007