What does "4esg25" mean on thread steel?
The brand of steel is expressed in terms of Arabia numerals or Arabia numerals plus English letters. HRB335, HRB400 and HRB500 are represented by 3, 4 and 5, respectively. HRBF335, HRBF400 and HRBF500 are represented by C3, C4 and C5 respectively. The name of the factory is expressed in Chinese phonetic prefix. Nominal diameter mm Arabia digital representation.
4esg25 these are the basic information of reinforcement, equivalent to the identity card information. Represents grade four steel (HRB500), and ESG represents the modulus of elasticity of the reinforcement in the reinforcement; then the nominal diameter is 25.
The letters on the reinforcement are registered plant names or trademarks. The top figures on the bar represent the grade of the reinforcement, such as 3 for grade 2 steel, 4 for grade 3 steel, and 5 for grade 4 steel. The numbers in the back represent the specifications of the bars, and the letters between grades and specifications represent the steel manufacturer.
