Rebar is a plain or ribbed hot rolled steel product with circular section which is used in concrete in order to compensate low tension strength and it is classified into different categories according to the appearance and mechanical specifications. Iran’s known official reference is national standard of 3132 so that every production unit must work based on the details of abovementioned standard. According to the standard of 3132, rebar categorization and naming will be based on the following table:
