... stock 1.Material:GR.1,GR.2,GR.3,GR.4, GR5,GR.7,GR.9,GR.12,GR.232.Standard:ASTM ... recognized standards, such as ASTM, AMS, ASME,JIS,MIL...----All of our raw material are come from ZUNYI factory(one of the ... ,F136,ASME,AMS,JIS,DIN, etcMaterialGr1,Gr2,Gr3,Gr5,Ti-6Al-4v,Gr7,Gr9,Gr12,Gr23CertificateISO 9001,SGS report,Material and test ...