1907 Founded by Hokkaido Colliery Steamship Company and the British firms Sir W.G. Armstrong, Whitworth & Co., Ltd. and Vickers Sons and Maxim, Ltd., with capitalization of 10 million yen. The headquarters and factory are located in Muroran, Hokkaido.
1915 The headquarters are moved to Tokyo.
1920 The Hiroshima Plant is established with the purchase of Hiroshima Seisakusho Co., Ltd., a company located outside the city of Hiroshima.
1935

Construction of the Yokohama Plant begins in Kanazawa-cho, Kanagawa Prefecture.

The plant is completed in June 1936 and goes into operation.
1938

Construction of the Tokyo Plant begins in Fuchu-cho, Kitatama-gun, Tokyo-fu.

The plant is completed in May 1941 and goes into operation.
1950 The Japan Steel Works, Ltd. is dissolved and reestablished with capital of 200 million yen. The new company takes over operations at the four plants in Muroran, Hiroshima, Yokohama, and Tokyo as well as the headquarters and other offices.
1969 Offices are established in New York, Düsseldorf, and Tehran.
1975 Offices are established in Los Angeles, Houston, and Singapore.
1978 Japan Steel Works America, Inc. is established.
1983

Operations begin at the new Yokohama Plant.

The Beijing Office is established.

The company is awarded the Deming Application Prize.
1987

The company enters the information systems business.

Construction of the Fuchu Intelligent Park begins on the site of the former Tokyo Plant.
1990 JSW Plastics Machinery, Inc. is established in the United States.
1991 The Technology Development Center is completed on the Hiroshima Plant premises.
1994 ISO 9001 and 9002 certifi cation is acquired.
1997 JSW Plastics Machinery (H.K.) Co., Ltd. is established in Hong Kong.
1998 ISO 14001 certification is acquired.
2000 JSW Plastics Machinery (TAIWAN) Corp. is established.
2003

The 10,000-ton press at the Muroran Plant is upgraded to a maximum upsetting force of 14,000 tons.

JSW Plastics Machinery (C) Corp. is established in China.
2005 The Shanghai Office is established.
2007

The company marks the centenary year of its founding.

The headquarters are moved to Osaki in Tokyo.
2008

Construction of the No. 4 assembly factory is completed at Hiroshima Plant.

JSW Machinery Trading (Shanghai) Co., Ltd. is established in China.
2009 Japan Steel Works (INDIA) Private Limited is established.
2010 JSW Machinery (Ningbo) Co., Ltd. is established in China.
2012

The Düsseldorf Office is made a local subsidiary.

Japan Steel Works Europe GmbH is established.
2014

The Japan Steel Works (Singapore)Pte.Ltd. is established.

JSW AFTY Corporation is established in Tokyo.
2015 SM PLATEK Co.,LTD. (SMP) in Korea becomes a subsidiary of JSW.
2016 Meiki Co.,Ltd. becomes wholly-owned subsidiary.