Company history

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