When the steel bar brand indicates the product name, purpose, characteristics and process method, the first letter is generally selected from the Chinese phonetic alphabet representing the product name. When it is duplicated with the letter taken by another product, select the second letter or the third letter, or select the first pinyin letter of two Chinese characters at the same time. In principle, only one Chinese phonetic alphabet is used, generally no more than two.

But there is no mark on the surface of the steel bar. The surface of steel bar is marked with information such as steel bar strength grade, earthquake resistance, trademark and steel bar diameter.

HRB400 strength grade ordinary steel bar, sand steel, with a diameter of 20mm. If it is seismic reinforcement, there are four with E at the back.