Company

Outline

Company Name Sumihatsu Co., Ltd.
Details of Business Activities Engaged in the manufacture and sale of leaf springs for automobiles, coil springs for industrial machinery, parts for railway facilities, etc.
President & CEO Ko Masuda
Founded October 1960
Capital 345 million yen
Employees 430
Subsidiaries Sumihatsu Service Co., Ltd.
Major Shareholders NHK Spring Co., Ltd., Mizuho Bank, Ltd.
Major Customers
  • NHK Spring Co., Ltd.
    • Isuzu Motors Ltd.
    • Hino Motors, Ltd.
    • UD Trucks Corporation
    • others
  • TOHO CAR CORPORATION
  • NIPPON FRUEHAUF COMPANY, LTD.
  • NIPPON STEEL TRADING CORPORATION
  • Komatsu Ltd.
  • Kobelco Construction Machinery Co., Ltd.
  • TAKEUCHI MFG. Co., Ltd.
  • Itao Ironworks Co., Ltd.
  • FANUC CORPORATION
  • Kawasaki Heavy Industries, Ltd.
  • Hitachi, Ltd.
  • Japan Transport Engineering Company
  • NIPPON STEEL CORPORATION
  • Hitachi Building Systems Co., Ltd.
  • TOSHIBA ELEVATOR AND BUILDING SYSTEMS CORPORATION
  • NHK SALES CO., LTD.
  • Hokkaido Railway Company
  • East Japan Railway Company
  • Central Japan Railway Company
  • West Japan Railway Company
  • Shikoku Railway Company
  • Kyushu Railway Company
  • Tokyo Metro Co., Ltd.
  • TOKYU RAILWAYS Co., Ltd.
  • Odakyu Electric Railway Co., Ltd.
  • Kintetsu Railway Co., Ltd.
  • Metropolitan Intercity Railway Company
  • Japan Railway Construction, Transport and Technology Agency
  • Kowa Kasei Co., Ltd.
  • Public and private railway operators across Japan
  • and others

*The companies listed above are in no particular order.

Office

Head Office & Tsukuba Plant 1158, Takamori, Sakuragawa, Ibaraki 309-1297, Japan
Tel. 0296-58-5161 (key) 
Fax. 0296-58-5722
Sales Division 4F, UNIZO Iwamoto-cho 3-chome Building, 3-5-5, Iwamoto-cho, Chiyoda-ku, Tokyo 101-0032, Japan
Tel. 03-3864-6331 
Fax. 03-3864-6130
Osaka Sales Office 9F, Shin-Osaka Daiichi Seimei Bldg., 5-24, Miyahara 3-chome, Yodogawa-ku, Osaka 532-0003, Japan
Tel. 06-6350-5691 
Fax. 06-6350-5696

History


1960 Yamamoto Hatsujo Bunki, Inc. (founded in 1908) and Nitto Industries, Inc. were merged together, and Sumikin Hatsujo Co., Ltd. was formed as an affiliate of Sumitomo Metal Industries, Ltd.
Head Office: Amagasaki
Capital: 190 million yen
1965 Head Office moved to Fujisawa City.
Acquired Nitto Industries, Inc. and Amagasaki Factory was opened.
Capital: 200 million yen
1970 Factories were united in Fujisawa Factory.
Capital: 300 million yen
1975 NHK Spring Co., Ltd. acquired shares from Sumitomo Metal Industries, Ltd. and company name was changed to Sumihatsu Co., Ltd.
1978 Acquired Nikken Spring, Inc., an affiliate of NHK Spring Co., Ltd.
Capital: 345 million yen
A new factory for spring clips was completed in the corner of in the Industrial Complex at Yamato-mura, Ibaraki.
1981 Closed Fujisawa Factory.
Completed a complete transfer from Fujisawa to establish our Tsukuba Plant.
1982 Completed production facilities for automobile coil springs.
1983 Moved Head Office to Iwamoto-cho, Chiyoda-ku, Tokyo.
1995 Established Sumihatsu Service Co., Ltd. as an affiliate.
1997 Manufacturing of Balancer Assy was started.
Business cooperation agreement was signed with Pandrol Track Systems Ltd.
1998 Started full-scale production of the Pandrol clips.
1999 ISO 9001 was certified (leaf spring, C2)
2000 ISO 9001 was certified (industrial machinery, railways).
Sumihatsu Services, Inc. started elderly care business.
2001 Started production of synthetic sleepers.
2002 Ended production of coil springs of automobiles.
2003 Signed an agreement to make rail fastening devices for the Taiwan Shinkansen.
All shares owned by Sumitomo Metals (Kokura), Ltd. were transferred to NHK Spring Co., Ltd.
ISO 14001 was certified.
2007 Installed LNG satellite equipment.
Enlarged the building of the second leaf spring plant.
2009 Started receiving full-scale orders of torsion bars for railway vehicles.
2015 Started Sumihatsu Service Co., Ltd. outpatient care (day service) business.
2020 Moved our Head Office to Sakuragawa City, Ibaraki Prefecture.