MKK History (Maruichi Kokan / headquarter in Japan)

1926	"Maruichi Production" founded as a bicycle parts company.
1935	Started producing bicycle steel pipes.
1940	Company name changed to "Maruichi Steel Tube Works" and separated from its bicycle parts division.
1947	"Maruichi Steel Tube Ltd." established.
1956	"Maruichi Kohan Ltd." founded.
1957	Osaka Plant commissioned.
1958	Tokyo Office opened. Electric tube welding system imported from Abby Etona Co.
1960	Nagoya Office opened.
1961	Tokyo Plant commissioned.
1962	Company listed to the Tokyo and Osaka Stock Exchange (2nd board).
1964	Company listed to the Tokyo and Osaka Stock Exchange (1st board). Fukuoka Office opened.
1965	Sakai Plant commissioned.
1966	Nagoya Plant commissioned. Hiroshima Office opened.
1970	"Hokkaido Maruichi Steel Tube Ltd." founded. Sapporo Office opened.
1972	Sakai Pole Plant commissioned. Osaka office opened. "Indonesia Steel Tube Works Ltd. (ISTW)" founded.
1973	Tokyo No.2 Plant commissioned.
1974	"Shikoku Maruichi Steel Tube Ltd." founded. "Kyushu Maruichi Steel Tube Ltd." founded.
1977	Nagoya Plant No.2 (current Nagoya Plant) commissioned. "Tachibana Industry Co., Ltd." and "Shikoku Maruichi Steel Tube Ltd." merged.
1978	Main office relocated to present address, Kitahorie, Nishi-ku, Osaka. Maruichi American Corporation (MAC) established.
1989	Takuma Plant commissioned.
1995	Kashima Pole Plant commissioned. Tokyo No.2 Plant renewal completed.
1998	Sapporo Plant consolidated to Tomakomai Plant under Hokkaido Maruichi Steel Tube Ltd.
2000	Hiroshima Office and warehouse opened.
2001	Annealing facilities built in Takuma Plant.
2002	Tokyo No.2 Plant new warehouse constructed. Hamamatsu's new warehouse completed.
2003	New warehouse and cutting factory opened in Nagoya Plant.
2004	Kyushu Maruichi Steel Tube Ltd. renewal completed.
2005	New factory opened in Tomakomai Plant of Hokkaido Maruichi Steel Tube Ltd.
2006	New warehouse opened in Nagoya Plant. Maruichi Metal Product Co., Ltd.(MMP) founded in Foshan, China. Sun Steel Corporation (Vietnam) joins Maruichi Steel tube Group.
2007	New warehouse opened in Okayama warehouse. New plant built in Sakai plant. SEIKEI STEEL TUBE CORPORATION (Japan) joins Maruichi Steel Tube Group.
2008	Leavitt Tube Company, LLC (IL, USA) joins and became one of subsidiary companies of Maruichi Steel Tube Ltd. Sun Steel Joint Stock Company became one of subsidiary companies of Maruichi Steel Tube Ltd. Sakai Plant renewal completed.
2009	MARUICHI KUMA STEEL TUBE PRIVATE LIMITED (India) has become one of subsidiary companies of Maruichi Steel Tube Ltd. Sakai Production Facility of Seikei Steel Pipe Corporation founded. Additional acquisition of stocks in Alpha Metal Co., Ltd. (Japan).
2010	16"mill built in SUNSCO (Vietnam) Sun Steel (Hanoi, Vietnam) Co., Ltd. founded. J-Spiral Steel Pipe Co., Ltd. joins Maruichi Steel Tube Group.
2011	Maruichi Metal Product (China, Tianjin) founded opened. Mechanical structure steel tube mill at Tokyo No.2 Plant opened. No.2 factory mill at Sakai Pole Plant opened.
2012	Maruichi Metal Product( China, Wuhan) founded opened. No.2 and No.3 factory mill at Tokyo No.2 Plant opened. Maruichimex (Mexico) Co., Ltd. founded.
2013	Megasolar Power Plant has started operation in Takuma Plant. Sun Steel Co., Ltd. Started operation No.2 CGL ・CCL
2014	Tokyo Plant and Tokyo No.2 plant completed consolidating
2015	Maruichi Oregon Steel tube founded