Cold-formed section steel can be used in industrial building structures and engineering structures, primarily consisting of two types: hot rolled cold-formed section steel and hot dip galvanized cold-formed section steel. This dataset includes major raw materials, auxiliary materials, energy, and waste generated during the production process, but excludes infrastructure such as production equipment and factory construction from its system boundary. The life cycle inventory is compiled from data sourced from multiple references. The manufacturing process of cold-formed section steel includes cold forming, cut-to-length, and final packaging operations.