Tokyo Steel Corporation

Founded in 1934.

Established in Adachi-ku, Tokyo, with a capital of 1 million yen, for the purpose of manufacturing and selling various steel products.

Establishment

Established in Adachi-ku, Tokyo, with capital of 1 million yen for manufacturing and selling various steel materials. (Founded November 23, 1934) Since then, engaged in the production of various special steels at two open-hearth furnaces, one electric furnace, and medium and small rolling mills.

Absorbed and merged with Toa Steel Pipe Industry Co., Ltd.

Absorbed Toa Steel Pipe Industry Co., Ltd. (capital 2.5 million yen).

Acquired factory land in Kurashiki City, Okayama Prefecture.

Acquired factory land (about 503,000 square meters) in Kurashiki City, Okayama Prefecture, based on factory site acquisition regulations.

Completion and start of operation of the first blast furnace at Okayama Factory.

Completed and started operation of the first open-hearth furnace at Okayama Factory. Subsequently, completed five 120-ton open-hearth furnaces, and medium and small rolling facilities, engaged in the production of medium and small shaped steels.

Completion of large-scale rolling mill at Okayama Factory, start of H-shaped steel production.

Transferred and started production at Kochi Factory, as Tosa Electric Steel Works.

Received transfer of the Kochi Factory from Tosa Electric Steel Works Co., Ltd., and started production as our Kochi Factory.

Acquired factory land in Kitakyushu City, Fukuoka Prefecture.

Acquired factory land (about 154,000 square meters) in Kitakyushu City, Fukuoka Prefecture.

Absorbed and merged with Daimaru Steel Co., Ltd., and started operation as Kyushu Factory.

Daimaru Steel Co., Ltd. (Capital: 5 million yen, acquired all shares since July 1969) was absorbed and merged, and began operation as our Kyushu factory.

Updated equipment at Kyushu Factory and resumed production.

Completion of two 50-ton electric furnaces and two continuous casting facilities at Kyushu factory, updating and rationalizing equipment, and starting production.

Completion of medium-sized rolling mill at Kyushu Factory, start of medium steel section production.

Completion and start of operation of continuous casting equipment at Okayama Factory.

Relocated headquarters from Adachi-ku, Tokyo, to Chiyoda-ku.

Relocated headquarters from Adachi-ku, Tokyo to Chiyoda-ku.

Listed on the Second Section of the Tokyo Stock Exchange.

Listed on the Second Section of the Tokyo Stock Exchange.

Absorbed and merged with Tosa Electric Steel Works, started production at Takamatsu Factory.

Absorbed Tosa Electric Steel Co., Ltd., and started production at our Takamatsu factory.

Listed on the First Section of the Tokyo Stock Exchange and the First Section of the Osaka Securities Exchange.

Listed on the First Section of the Tokyo Stock Exchange and the Osaka Securities Exchange.

Stopped operation of blast furnace at Okayama Factory.

Closed Edogawa Factory.

Completed and started operation of 140-ton electric furnaces No. 1 and No. 2 at Okayama Factory.

Completed remodeling of medium-sized steel section plant at Okayama Factory and started production.

Completion and start of production at Okayama Plant Small Bar Steel Factory.

Opening of Osaka Sales Office, successful casting of beams and blanks at Kochi Plant.

Completion of renovation work at Senju Plant Large and Medium Shape Steel Factory, start of production.

Completion of Kyushu Plant Large Rolling Mill, start of production of large H-shaped steel, universal plates.

Closure of Senju Plant.

Closure of Kochi Plant.

Renaming of Osaka Sales Office to Osaka Branch, establishment of Amazing Co., Ltd.

Renamed Osaka Sales Office to Osaka Branch, established Amazing Co., Ltd. (subsidiary).

Completion and start of operation of 130-ton DC Electric Furnace at Kyushu Plant.

Completion of Hot Rolled Wide Strip Steel Rolling Mill at Okayama Plant, start of hot coil production.

Completion and start of operation of 150-ton DC Electric Furnace Wide Strip Steel Mill at Okayama Plant.

Acquisition of factory site in Utsunomiya City, Tochigi Prefecture.

Acquired factory land (about 147,000 square meters) in Utsunomiya City, Tochigi Prefecture.

Start of steel sheet pile production at Kyushu Plant Large Rolling Mill.

Establishment of Nagoya Branch, Kyushu Branch, and Takamatsu Sales Office.

Established Nagoya Branch, Kyushu Branch, Hiroshima Sales Office, and Takamatsu Sales Office.

Completion of Pickling Line for Hot Rolled Wide Strip Steel at Okayama Plant, start of pickled coil production.

Completion and start of operation of Rolling Mill at Utsunomiya Plant.

Completion and start of operation of Steel Manufacturing Plant at Utsunomiya Plant.

Completion of 60-ton DC Electric Furnace at Takamatsu Plant, renewal of bar rolling equipment, start of production.

Completion and start of operation of Wire Rod Rolling Equipment at Takamatsu Plant.

Completion of Cold Rolling Equipment and Surface Treatment Equipment at Okayama Plant, start of galvanized coil production.

Establishment of Utsunomiya Sales Office.

Renamed the Kyushu Branch to Kyushu Sales Office and integrated Hiroshima Sales Office into Osaka Branch.

All factories completed ISO9002 (Quality System) certification.

All factories completed ISO14001 (Environmental Management System) certification.

All factories completed ISO 14001 (Environmental Management System) certification.

All factories completed ISO9001 (Quality System 2000 Edition) certification.

All factories completed ISO 9001 (Quality System 2000 Edition) certification.

Integrated Nagoya Branch into Osaka Branch.

Completed the new equipment for the leveler shear line at Okayama Factory and started production of cut sheets.

Integrated Takamatsu Sales Office into Osaka Branch.

Started construction of new thick plate manufacturing equipment at Kyushu Factory.

Decided to acquire land for a new factory in Tahara City, Aichi Prefecture.

Decided to acquire new factory site (104 hectares) in Tahara City, Aichi Prefecture.

Completed thick plate manufacturing equipment at Kyushu Factory.

Completed land acquisition for Tahara Factory and started construction of the new factory.

Opened Okayama Sales Office.

Established Tahara Sales Office.

Opened Tahara Sales Office and renamed Osaka Branch to Osaka Sales Office.

Completed the hot-rolled wide strip steel rolling mill at Tahara Factory and started production of hot coils.

Completed the leveler shear line equipment at Tahara Factory and started production of cut sheets.

Completed Tahara Factory hot-rolled wide strip steel rolling mill, started production of hot coils.

Completed the square steel pipe equipment at Tahara Factory and started production.

Completed Tahara Factory leveler shear line equipment, started production of cut sheets.

Started operation of the steelmaking plant at Tahara Factory.

Completed Tahara Factory square steel pipe equipment, started production.

Completed the hot-rolled wide strip steel pickling equipment at Tahara Factory and started production of pickled coils.

Started operation of Tahara Steelmaking Factory.

Production stopped at Takamatsu Factory.

Completed Tahara Factory hot-rolled wide strip steel pickling equipment, started production of pickled coils.

Established Takamatsu Steel Center.

Production stopped at Takamatsu Steel Factory.

Abolished Osaka Sales Office and Tahara Sales Office, established Osaka Branch and Nagoya Branch.

Established Takamatsu Steel Center.

Abolished Kyushu Sales Office and established Kyushu Branch.

Abolished Osaka Sales Office and Tahara Sales Office, established Osaka Branch and Nagoya Branch.

Announced the long-term environmental vision "Tokyo Steel EcoVision 2050".

Abolished Kyushu Sales Office and established Kyushu Branch.

Installed and started operation of No.4 CCM equipment at Okayama Factory.

Announced the long-term environmental vision "Tokyo Steel EcoVision 2050".

Decided to acquire 66,100㎡ of land adjacent to Utsunomiya Factory.

Installed and commenced operation of No. 4 CCM equipment at Okayama Factory.

Revised the long-term environmental vision "Tokyo Steel EcoVision 2050".

Decided to acquire 66,100㎡ of land adjacent to Utsunomiya Factory.

Completed solar power facilities at four domestic factories.

Revised the long-term environmental vision "Tokyo Steel EcoVision 2050".

Established Nagoya Satellite Yard.

Completed solar power facilities at four domestic factories.

Restarted hot rolling mill at Okayama Factory.

Established Nagoya Satellite Yard.

Established Kansai Satellite Yard.

Reactivated pickling equipment at Tahara Factory.

Established Tokyo Bay Area Satellite Yard.