The national standard specifies the labeling, technical requirements, test methods, test rules, packaging, marking and quality certificate of high-strength low-alloy structural steels.
This national standard is applicable to the engineering steels and ≥3mm-thick general structural steel plates, strands, sections and bars processed through hot rolling, controlled rolling, normalizing, normalizing + tempering, quenching + tempering.
The chemical components of high-strength low-alloy structural steel, specified in this national standard, are also applicable for the steel ingot, continuous-casting billet, billet and the relevant products.
