1.Grade:Gr1,GR2,GR3,GR5,GR7,GR9 2.Standard:ASTM B381/348,AMS 4928 3.SGS report 4.OD: ... rings1 Grade: Gr1,Gr2,Gr3, Gr.5,Gr7, Gr9,Gr122. Standard: ASTM B381,ASTMB348,ASTMF67,ASTMF136, AMS 49283.Size:ProductODIDHeightGradeSpecificationTitanium Discs30 ...