... 7,GR 9,GR.12,GR.23, 6AL4V ELi ASTM B265, ASTM F136,ASTM F67, AMS 4911,AMS 4905, AMS 4907, MIL ... .9.Quality Assurance ----According to globally recognized standards, such as ASTM, AMS, ASME,JIS,MIL... ---- provide third-part inspection reports ... institute of no-ferrous metal research test. -----Chemical composition, Mechanical properties are strictly controlled,making sure that no defects inside the ...