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history
Aug
1938 Founded as Miyazaki Tekkojyo
Nov
1959 Miyazaki Seiko Co., Ltd. incorporated with capital of 5 million yen
Jun
1964 Approved as a JIS plant
Sep
1968 Chita Plant completed for the dedicated manufacture of CHQ wire
Mar
1971 Koho CD Bars Service Center Co., Ltd. established
Jun
1971 Equity participation in Nippo Tsuun Co., Ltd.

Aug

1974 Yaesu Giken Tsusho Co., Ltd. established (renamed to Miyazaki Engineering Co., Ltd. in Aug 1982)
Mar
1975 Toyo Seiko established
Jul
1979 Equity participation in Kyoto Kogyosho Co., Ltd.
Jan
1982 Started production of fine slugs
Jul
1987 Started sales of PIC-made cold drawn pipe in coil
Jul
1990 Jyushiyama Plant completed
Feb
1992 Equity participation in Chukyo Seisen Co., Ltd.
Apr
1997 Chita Plant acquired ISO9002
May
1998 Head Plant & Jyushiyama Plant acquired ISO9002
May
1999
ISO9002 accreditations integrated for the whole company
May
2000 Miyazaki USA, Inc. established
Jun
2001 ISO14001 acquired
May
2002 Upgraded ISO 9002 to ISO9001
Nov 2005
Head Plant acquired ”Eco-Oriented Business Certified by the City of Nagoya”
Jun
2006 Nittetsu Tokai Steel Wire Co., Ltd. established through the merger of Chukyo Seisen Co., Ltd. with Chitak K.K.
Sep
2006 Nippon Steel Bar & CH Wire (China) Co., Ltd. established under JV
Dec
2006 Nippon Steel Bar & CH Wire (Thailand) Co., Ltd. established under JV
Feb
2008 All business units in the company acquired ISO/TS16949:2002
Aug
2009 Chita New Plant completed
Oct 2012

Nittetsu Tokai Steel Wire Co.,Ltd. Changed its name to NIPPON STEEL & SUMIKIN Steel Wire Co.,Ltd. due to the merger Of NIPPON STEEL Co.,Ltd. and SUMITOMO METARU Co.,Ltd.

Jan 2013

NIPPON STEEL BAR & CH WIRE(THAILAND)CO.LTD. merged into NIPPON STEEL & SUMIKIN Steel Processing(Thailand) Co.,Ltd. due to the merger of NIPPON STEEL Co.,Ltd. and SUMITOMO METARU Co.,Ltd.

Nippon Steel Bar & CH Wire (Suzhou) Co., Ltd. Changed its name to Nippon Steel & Sumikin Cold Heading Wire (Suzhou) Co., Ltd. Due to the merger of NIPPON STEEL Co.,Ltd. and SUMITOMO METARU Co.,Ltd.
Dec 2013
Mar 2014 Miyazaki Seiko de Mexico, S.A. de C.V. established.
Jan 2015 Head Plant acquired ” Excellent Eco-Oriented Business Certified by the City of Nagoya”
Jun 2016 NIPPON STEEL & SUMIKIN COLD HEADING WIRE INDIANA INC. Established under JV
Aug 2016 Miyazaki USA,Inc. dissolved due to business stopped
Sep 2016 Miyazaki Seiko de Mexico, S.A. de C.V. plant completed
Jan 2018 IATF16949 acquired
Apr 2019 NIPPON STEEL & SUMIKIN Steel Wire Co.,Ltd. changed its name to NIPPON STEEL WIRE CO.,LTD. due to change of parent company's name.
Apr 2019 NIPPON STEEL & SUMIKIN Steel Processing(Thailand) Co.,Ltd. changed its name to NIPPON STEEL Steel Processing (Thailand) Co., Ltd. due to change of parent company's name.
Apr 2019 Nippon Steel & Sumikin Cold Heading Wire (Suzhou) Co., Ltd. changed its name to NIPPON STEEL COLD HEADING WIRE (SUZHOU) CO., LTD. due to change of parent company's name.
Apr 2019 NIPPON STEEL & SUMIKIN COLD HEADING WIRE INDIANA INC. changed its name to NIPPON STEEL COLD HEADING WIRE INDIANA INC. due to change of parent company's name.
Nov 2019 Headquarters auditorium and dining building completed
Apr 2020 Product exhibition room (Headquarters) completed
Feb 2023 NIPPON STEEL COLD HEADING WIRE INDIANA INC.(NSCI) dissolved due to business withdrawal
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