Explanation of the 4-sided box, differences from columns, and compatibility.
In steel frame (S) construction, the column material is primarily large-diameter square steel pipes known as "columns." However, there is a size limit, with a maximum manufacturing size of 1000mm. For super high-rise buildings that require larger sizes, a "four-sided box," also known as a welded four-sided box or box column, is used. In Japan, column materials for construction structures predominantly use columns, whereas in Taiwan, four-sided boxes are more common. Like Japan, Taiwan experiences frequent earthquakes and requires high strength, but there are fewer column manufacturers, and there are steel manufacturers that produce thick plates, which likely leads to a greater use of four-sided boxes. *For more detailed information about columns, please refer to the PDF materials.*
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Nakajima Steel Pipe Co., Ltd. is a company primarily engaged in the manufacturing of structural square steel pipes, as well as the design, production, and construction of steel structures. We have consistently provided high-performance building materials in the form of steel pipes and excellent advanced technologies. Focusing on the manufacturing of hot-formed steel pipes, we are expanding our presence in the global market, including Europe. Please look forward to the passionate steel pipe manufacturing technology of Nakajima Steel Pipe.