Q235B carbon steel continuous annealed coil is a high-quality low-carbon steel material with excellent ductility, toughness, and weldability, widely used in automotive, construction, machinery manufacturing, bridge structures, shipbuilding, and various industrial fields. The production process of annealed coils includes heating, holding, and slow cooling of cold-rolled hard coils, covering energy consumption, material consumption, waste treatment, and environmental emissions required during production. This dataset is compiled from data sourced from multiple origins.