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S235JR is a widely used non-alloy structural steel plate. It is extensively applied in construction for manufacturing building steel frames, beams, columns, and prefabricated structural components, as its stable mechanical properties and good weldability ensure structural safety. In machinery manufacturing, it is used to produce equipment housings, support brackets, and non-high-load transmission parts, benefiting from easy cutting and forming. It also finds applications in the automotive industry (for low-stress chassis accessories), the container sector (for ordinary cargo container bodies), and municipal infrastructure (for guardrails, street lamp poles, and small bridge components), serving as a cost-effective choice for general industrial and civil scenarios needing reliable basic structural performance.