.2 Object of application
This regulation applies for the organizations, individuals carrying out the manufacture, import, distribution and use of steels for the reinforcement of concrete, the state agencies for management and the relevant organizations and individuals.
1.3 Explanation of terms
For the purpose of this regulation, the term below shall be understood following:
1.3.1 Product lot: Steels for the reinforcement of concrete that have the same grade and nominal diameter are manufactured in the same phase and on the same technological line.
1.3.2 Goods lot: Steels for the reinforcement of concrete that have the same grade and nominal diameter, the same marking content are imported, distributed and retailed at the same place by an organization or individual.
1.3.3 Grade of steel for the reinforcement of concrete: Grade of steel for the reinforcement of concrete shall be specified in the national standards (TCVN) as following:
- Steel grade of plain bars: CB240-T; CB 300-T;
- Steel grade of ribbed bars: CB300-V; CB400-V; CB500-V.
Note: The first letters “CB” are the abbreviations for the reinforcement of the concrete. The three following numbers represent the specified value of upper yield strength. The last designation “T” is the abbreviation for steel plain bars and “V” – steel ribbed bars.
1.3.4 Nominal cross-section area of steel ribbed bars: the cross-section area corresponds to that of the cylindrical plain bar having the same nominal diameter.