... galvanizing, oil, parkerising etc.2. Grade: 4.6, 5.6, 8.8, 10.6 and12.93. Dia: from M16 to M604. Length ... railway products: T B, UIC , AREA, etc. standard components:GB,DIN,ASTM.BS,etc6. Tensile strength no less than 500 N ... weather proof lable with content required and approved by clients.8. Head marked with manufacturer ID, Year, length/grade, and other inforamtions ...