... Grade: Gr2, Gr5, Gr7, Gr9. 3. Standards: 4.Application:Bicycles,Motors,Chemicals. DescriptionStandards: DIN,ASTM,BS.Strength : Superior Quality, ... high strength and excellent corrosion resistance and widely used in many fields,such as chemical industry ,petrochemical ... industry,used in surgical implants,seawater desalination,ocean environment protection ...