1.titanium disc 2.GR1,GR2,GR3,GR5,GR7,GR9 3. ... 4928 4.OD:30-900mm 5.high quality Titanium discs 1 Grade: Gr1,Gr2,Gr3, Gr.5,Gr7, Gr9,Gr122. Standard ... China, with advanced production equipment and testing instrument and large-scale production capability of 5000 tons per year.All titanium products ...