D8 Steel bar

 8mm diameter deformed steel reinforcing bar (rebar) used in construction, particularly for light reinforcement works like slabs, and it is a type of TMT (Thermo-Mechanically Treated) bar.While the “D8” can also refer to “Deformed Steel D8,” a high-carbon, high-chromium tool steel with wear-resistant properties, the context of “steel bar” in construction typically points to the reinforcing rebar.