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History

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July 1948The company was founded under the name Taiyo Kogyo Co., Ltd. in Moji City, Fukuoka Prefecture (now Moji Ward, Kitakyushu City).
April 1950Production and sales of Taiyo Joint steel pipe fittings began.
May 1956Tokyo Branch Office opened.
May 1957Sapporo Branch Office opened.
September 1963Nagoya Branch Office opened.
September 1967Sapporo Branch Office was upgraded to a branch office.
October 1967Osaka Sales Office opened, and the Nagoya Branch Office was closed and absorbed into the Osaka Sales Office.
November 1971The company name was changed to Taiyo Joint Co., Ltd.
February 1975A new assembly and testing facility was opened in Shinmoji.
April 1977The Head Office Building was completed.
January 1981New vertical and horizontal large-scale universal testing machines were installed at the Shinmoji Factory.
September 1982Tokyo Branch Office was upgraded to a sales office.
April 1984Certified as an inspection facility by the Japan Water Works Association.
April 1987Established a joint venture company “Huaying Pipe Industrial Co., Ltd.” in Fushun City, Liaoning Province, China.
April 1989Sapporo Branch Office was converted to a sales office.
June 1997Expanded the Shinmoji Factory.
March 2002Liquidated the joint venture company “Huaying Pipe Industrial Co., Ltd.”
March 2008Obtained ISO 9001 certification.
July 2018Obtained ISO 9001: 2015 certification.