It is difficult to determine the specific industries that use DD11 or DX51 steel grades without more information about the project requirements. However, both steel grades have various applications in different industries.
DD11 steel grade is commonly used in automotive parts, construction, furniture, and appliances manufacturing. It is suitable for forming and welding processes.
DX51 steel grade, also known as galvanized steel, is used in industries that require corrosion resistance and durability, such as automotive manufacturing, construction, and electrical appliances.
To make an informed decision about which steel grade is suitable for your project, it is recommended to consult with a steel expert or refer to industry standards and specifications relevant to your specific application.