| 1941年04月 |
Four wholesalers designated by Sumitomo Metal Industries, Ltd. (now NIPPON STEEL CORPORATION) were merged to establish Igeta Steel Pipe Sales Co., Ltd. |
| 1944年03月 |
Company name was changed to Igeta Steel Pipes Co., Ltd. |
| 1962年10月 |
Company name was changed to Sumikin Bussan Kaisha, Ltd. and the company was merged with Yamamoto Kogyo Co., Ltd. |
| 1967年11月 |
The company was merged with Masutani & Co., Ltd. |
| 1977年08月 |
Nittetsu Shoji Co., Ltd. established as a wholly-owned subsidiary of Nippon Steel Corporation. (now NIPPON STEEL CORPORATION) |
| 1977年11月 |
Nittetsu Shoji absorbs Osaka Kozai Co., Ltd. and Irimaru Sangyo Co., Ltd. |
| 1990年12月 |
The company was listed on the Second Section of the Tokyo Stock Exchange. |
| 1991年10月 |
The company was listed on the Second Section of the Osaka Securities Exchange. |
| 1993年04月 |
The company was merged with Itoman Corporation. Stocks of the company were registered as OTC supervised issues of the Japan Securities Dealers Association. |
| 1994年12月 |
Registration of stocks was changed from OTC supervised issues to OTC listed issues of the Japan Securities Dealers Association. |
| 1996年12月 |
The company was listed on the First Section of the Osaka Securities Exchange. |
| 2003年12月 |
The company applied to delist from the Osaka Securities Exchange.(Voluntarily delisted in Feb.2004) |
| 2006年12月 |
The company was listed on the First Section of the Tokyo Stock Exchange. |
| 2010年04月 |
The company was listed on the First Section of the Tokyo Stock Exchange. |
| 2013-10-01 |
Merged to form NIPPON STEEL & SUMIKIN BUSSAN CORPORATION. |
| 2019-04-01 |
Trade name changed to NIPPON STEEL TRADING CORPORATION. |
| 2023-04-14 |
Became a consolidated subsidiary company of Nippon Steel Corporation. |
| 2023-06-21 |
Delisted from the Tokyo Stock Exchange. |
