year
month
1934
11
Kikuchi Hideyuki invents the "High-Frequency Electroshock Refining Method."
1936
1
9
Nippon Koshuha Heavy Industry Co., Ltd. founded with capitalization of ¥10 million.
Kita-Shinagawa Plant completed.
1937
1~12
8
10
Kita-Shinagawa Plant inspected by Prince Chichibu and other members of the imperial family.
Songnim (North Korea) Plant completed.
Toyama Works completed.
1940
11
Capitalization increased to ¥50 million.
1950
5
Newly inaugurated Nippon Koshuha Steel Co., Ltd. takes over the assets of Nippon Koshuha Heavy Industry Co., Ltd. and begins operation with capitalization of ¥35 million.
1951
5
11
Hachinohe Plant begins operation.
Capitalization increased to ¥105 million.
1952
2
Listed on the Tokyo and Osaka stock exchanges.
1953
2
Capitalization increased to ¥500 million.
1955
7
Kobe Steel Ltd. invests in Nippon Koshuha Steel Co., Ltd.
1961
8
Capitalization increased to ¥1,000 million.
1967
8
First phase of medium-term streamlining program initiated.
1973
9
Second phase of medium-term streamlining program initiated.
1974
12
Capitalization increased to ¥2,000 million.
1975
10
2,500-ton hydraulic forging press installed at Toyama Works.
1977
1
Certified by Lloyd's Register of Shipping.
1978
3
6
Construction of a vacuum induction furnace completed at Toyama Works.
"Project to Promote the Planning of Managerial Rationalization" established.
1980
1
4
Toyama Plant certified by ClassNK, Japan's shipping classification society.
Toyama Plant certified by Det Norske Veritas (DNV), Norway's shipping classification society.
1981
5
9
Hachinohe Plant established as a separate entity called Koshuha Foundry Co., Ltd, specializing in casting production.
New 20kVA vacuum induction furnace installed at Toyama Works.
1982
8
Capitalization increased to ¥3,000 million.
1983
9
Construction of wire rod - finishing block mill (made by FRIEDRICH KOCKS GmbH & Co KG) completed at Toyama Works.
1984
2
Sales of NK rings initiated.
1985
2
10
Kita-Shinagawa Plant receives the "Superior Manufacturing Cost Improvement Award" from Toyota Motor Corporation.
Koshuha Foundry Co., Ltd. begins manufacturing and selling gate peckers.
1986
6
Kita-Shinagawa Plant's entire operation is relocated to Ichikawa.
1988
4
"Lost form process" facility installed at Koshuha Foundry Co., Ltd.
1989
4
6
11
3-ton induction furnace, and 3-ton and 1-ton ESR facilities installed at Toyama Works.
AIM casting facility installed at Koshuha Foundry Co., Ltd.
Capitalization increased to ¥8,000 million.
1990
1
3
7
10
Capitalization increased to ¥8,800 million.
1,500-ton high-speed hydraulic forging press installed at Toyama Works.
Fully automated new steel wire production facility transferred and opened at Toyama Works.
FMS operations initiated at Ichikawa Plant.
1991
12
Koshuha Community Center completed at Toyama Works.
1992
2
Nippon Koshuha Steel Co., Ltd. and Asai Sangyo Co., Ltd. form a joint-venture trading company called K A Metal Service Co., Ltd.
1994
3
Capitalization increased to ¥10,000 million.
1996
1
5
Toyama Works receives ISO9002 certification.
Capitalization increased to ¥12,000 million.
1998
10
Precision press testing center completed at Ichikawa Plant.
1999
1
Flat-plate rolling mill installed at Toyama Works.
2000
4
Capitalization increased to ¥15,700 million.
2001
5
6
K.A.Metal Service Co., Ltd. and Daiwa Kinzoku Co., Ltd. merge to become KAMS Co., Ltd.
Ichikawa Plant established as a separate entity called Koshuha Precision Co., Ltd., specializing in the manufacture and sale of tools and dies.
2003
9
12
2,500-ton hydraulic forging press at Toyama Works upgraded to 3,000-ton press.
New 600-ton press installed at Toyama Works.
2005
1
Simulated heat treatment furnace installed for R&D purposes at Toyama Works.
2006
1
600-ton press at Toyama Works upgraded to 1000-ton press.
2006
10
Nippon Koshuha Steel Co., Ltd. receives ISO 14001 cerification.
2008
8
Surface treatment plant completed at Chubu Techno Center, KAMS Co.,Ltd.
2009
12
Rotary type blooming heat furnace replaced with batch type at Toyama Works.
2011
10
11
Microfine Trading(Shanghai)Co.,Ltd. Established in Shanghai,China.
Large-size lathe for machine processing installed and K2 furnace extended at Toyama Works.
2013
6
11
East steel wire finishing and rolling facility newly constructed at Toyama Works.
Special furnace No.2(VAR)newly constructed at Toyama Works.
2014
1
KDM molding line (green sand molding equipment) completed by Koshuha Foundry Co.,Ltd.
2017
10
Construction for the size increased for the 3,000-ton hydraulicforging press manipulator completed
2018
4
FCMX molding line (green sand molding equipment) completed by Koshuha Foundry Co.,Ltd.
2019
12
Energy-saving construction work of the forging furnace completed
2020
5
Blooming mill modified and upgraded
