The subsequent phase entails the design of the testing gate framework. After a thorough examination of data concerning structural steel, we have decided to employ box steel due to its widespread availability in the market and its established reputation in the field of structural construction, in alignment with the industry standards recognized in Thailand and Japan.These industry standards incorporate three prevalent steel grades, specifically SS300, SS400, and SS490, each characterized by unique mechanical properties and chemical compositions. However, it is worth noting that SS400 stands as the most frequently utilized steel grade, readily accessible in stores. Our design process will be facilitated through the utilization of the SolidWorks software.