A steel structure sports arena is a large-span public building typically constructed using a bolt ball or welded ball space frame system. It is widely used in sports halls, exhibition centers, gymnasiums, cultural venues, and other public gathering spaces. Featuring an attractive architectural appearance, generous interior space without obstructive columns, and strong wind resistance, this type of structure is both functional and visually impressive. It is manufactured from high-quality steel tubes and Q355 steel to ensure reliable performance under various load conditions.