... 2.Standard:ASTM B381/348,AMS 4928 3.SGS report 4.OD:50-3000mm Titanium rings1 Grade: ... Gr1,Gr2,Gr3, Gr.5,Gr7, Gr9,Gr122. Standard: ASTM B381,ASTMB348,ASTMF67 ... ASTM, AMS, ASME,JIS,MIL...----All of our raw material are come from ZUNYI factory(one of the largest titanium ... than10 year's experience, exported various of titanium products over than 2000 MT yearly ------Delivery ...