- CEO
- Hiroyuki Suzuki
- Full Time Employees
- 2,519
- Sector
- Basic Materials
- Industry
- Steel
- Address
- Nambaskyo, 1-60, 5 Chome Osaka Japan 542-0076
- IPO Date
- Feb 18, 2022
- Business
- Maruichi Steel Tube Ltd. Maruichi Steel Tube Ltd. (5463:TYO) manufactures and sells welded steel pipes, surface-treated steel sheets, and poles through operations in Japan, North America, and Asia. The company offers a broad range of products including structural steel tubes such as STK carbon steel tubes for general structures, square tubes STKR for general structures, cold roll-formed rectangular tubes for building structures (Maruichi Column BCR), carbon steel tubes for building structures (STKN), Maruichi Prezinc tubes, square tubes and C-shaped steel (Maruichi AL-Z55), square color tubes, tube piles (SKK), carbon steel tubes for machine structures (STKM), square tubes for machine structures (STKMR), Maruichi Temporary tubes, Maruichi Handy Pipe STK700, and lightweight scaffolding pipes; steel tubes for piping; agricultural steel tubes; electrical conduits; seamless stainless steel tubes for high-pressure applications like hydrogen stations and power plants; Maruichi Poles for lighting, sign posts, and ETC gantries; hot-dip galvanized steel sheets; prepainted steel sheets; and plating coils. These products serve industries including construction, civil engineering, architecture, agriculture, machinery, automobiles, power generation, semiconductors, and logistics, with applications in buildings, factories, warehouses, greenhouses, and infrastructure. Founded in 1947 and headquartered at Namba SkyO 29th floor, 5-1-60 Namba, Chuo-ku, Osaka, Japan, Maruichi Steel Tube Ltd. maintains 10 factories and logistics warehouses, primarily in Japan, alongside subsidiaries in North America (e.g., Leavitt Tube, Maruichi Oregon Steel Tube), Asia (e.g., Sun Steel in Vietnam, former operations in China and India), and global export networks. Recent developments include the announced acquisition of Maruichi Kohan for 23.89 million JPY in September 2025 to expand manufacturing capabilities; an agreement to acquire Sato Katako Seikakusho Co., Ltd. in October 2024 for construction steel base materials; termination of the joint venture Maruichi Metal Product (Foshan) Co., Ltd. in China; and a prior acquisition of a local competitor in the Philippines in 2022, alongside partnerships for manufacturing automation and renewable energy projects.