- LANGUAGE
| 1920 | Nippon Chuzo Kabushiki Kaisha is founded with capitalization of ¥1 million Original location: Suehirocho, Tsurumi-ku, near Asano station on the JR Tsurumi line |
|---|---|
| 1952 | Company name is changed to Shin Nippon Chuzo then back to Nippon Chuzo Recapitalization to ¥50 million |
| 1956 | First production of ordinary castings and steel roll products |
| 1958 | Management and supply of plug products inherited from NKK Kawasaki Steelworks Production begins at new dedicated casting plant for specialty products New 500K high-frequency electrical furnace installed, shell molding line starts up |
| 1966 | Head office relocated from Otemachi, Tokyo to Shiraishicho, Kawasaki Construction finishes on northern section of Ikegami direct casting factory at NKK Keihin Works |
| 1967 | 8T low-frequency furnace installed at Ikegami direct casting factory Fukuyama direct casting factory completed, first FC20 molds produced |
| 1970 | Maurer GmbH (Germany) agrees to supply technical expertise bridge expansion joints Commemorative booklet 50 years of Nippon Chuzo |
| 1974 | New steelmaking facility completed at Kawasaki factory, 25T electric furnace relocated Recapitalization to ¥1,920 million |
| 1975 | Launch of NCHP and NCHP-S anchors with superior holding capacity |
| 1978 | Technical collaboration agreement signed with Daewon Kangup (Korea) on direct casting systems Centrifugal casting equipment installed at specialty steel casting factory |
| 1980 | V process molding line installed at specialty casting factory 8T low-frequency electric furnace installed at Fukuyama factory |
| 1981 | Furan molding line installed at Ikegami factory |
| 1986 | LEX25 low thermal expansion product announced |
| 1987 | Internal restructuring of operating divisions |
| 1988 | Honshu-Shikoku Bridge Authority issues certificate of gratitude for cable bands used on Hakata-Oshima Bridge New head office building completed |
| 1989 | Launch of Super LEX5 product Merger with former affiliate Keihin Machinery raises total capitalization to ¥2,100 million Completion of Employee Center (welfare facility) |
| 1999 | ISO9001 accreditation |
| 2001 | Concerted bid to establish a presence in the market for bridge anti-collapse mechanisms |
| 2003 | Ladle degassing and atmospheric control casting line installed at Kawasaki factory |
| 2003 | 8T high-frequency induction furnace installed at Kawasaki factory |
| 2003 | High-speed twin-axle tester for rubber bridge bearings installed at Kawasaki factory |
| 2004 | Rhizo series of new vehicle protective barriers released |
| 2005 | NCN490 casting steel approved by Ministry of Land, Infrastructure and Transport for use in spatial structure joints |
| 2006 | Rhizo series wins Good Design Award (designated by G logo) for stylish protective barrier |
| 2009 | 51% of stock in Shintohoku Metals is transferred to Hitachi Construction Machinery |
| 2012 | New share issue through capital and business tie-up with Hitachi Construction Machinery in conjunction with third-party allocation to Hitachi Construction Machinery |
| 2012 | Increase in third-party allocation from Hitachi Construction Machinery raises capitalization to ¥2,627 million |
| 2013 | Completion of new production facility making mining machinery components for Hitachi Construction Machinery |
| 2014 | LEX-ZERO low thermal expansion product announced |
| 2014 | Remaining stock in Shintohoku Metals transferred to Hitachi Construction Machinery |
| June 2014 | Kasumibashi bridge awarded the Tanaka Prize by the Japan Society of Civil Engineers |
| October 2015 | NC Base plate exposed steel pipe column method developed for high-strength steel pipe columns |