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Maruichi Steel Tube Ltd. produces and sells steel tubes and steel sheet coatings in Japan, North America, and Asia. It offers water pipes, OCTGs, and electrical conduits for use in plant construction projects and power generation plants; mechanical tubes; lamp posts, road signs, traffic lights, security barriers, and other fabricated products; welded steel tubes for machine structure, construction and piping, hot dip galvanized steel sheet, BA precision small tubes, pre-painted steel sheet, etc.; and structural steel tubes for various fields, such as architecture, civil engineering, and machinery. The company was incorporated in 1947 and is headquartered in Osaka, Japan.