Company Profile

Company name Tokyo Stainless Grinding Co., Ltd.
Representative Director and President Shigeru Kusakabe
Date of establishment April 1, 1951
Capital 50 million yen
Number of employees 170
Business activities Grinding and shear refining of steel materials such as stainless steel, titanium, aluminum, iron, etc.
Certified standards
Certified standards

ISO 9001:2015

Headquarters 1-15-8 Oshiage, Sumida-ku, Tokyo 131-0045 MAP
Chiba Plant 590-5 Owada Shinden, Yachiyo-shi, Chiba Prefecture 276-0046 MAP
Fukuoka Plant 1600 Ueki, Sue-machi, Kasuya-gun Fukuoka Prefecture 811-2112 MAP
Sapporo No.1 Plant 3-3-54 Akebono 2 Jo, Teine-ku, Sapporo-shi, Hokkaido 006-0832 MAP
Sapporo No.2 Plant 4-1-65 Hassamu 17 Jo, Nishi-ku, Sapporo-shi, Hokkaido 063-0837 MAP


  • April 1951: Founded privately in Minami-Senju, Tokyo as Tokyo Stainless Grinding Kogyosho.
  • February 1953: Incorporated as Tokyo Stainless Steel Grinding Ltd.
  • June 1958: Sapporo Plant established as a subsidiary.
  • September 1960: Company reorganized as a joint-stock corporation and takes its current name.
  • May 1962: Fukuoka Plant constructed in Fukuoka City.
  • March 1966: Boyama Plant constructed (currently Plant No. 1).
  • April 1968: Started coil grinding as the first grinding company in the city.
  • November 1978: Chiba No. 2 Plant acquired.
  • February 1985: Warehouse dedicated to base materials and products (inventory capacity of 4,000 tons) constructed at the Chiba No. 2 Plant to establish an integrated management system from material storage to processing to distribution.
  • March 1988: Sapporo Plant newly constructed and relocated to its current location (Teinei-ku, Sapporo City).
  • May 1993: Fukuoka Plant newly constructed and relocated to its current location (Sue-machi, Kasuya-gun, Fukuoka Prefecture).
  • March 1996: State-of-the-art coil grinding line (BG-3) capable of simultaneous front and back grinding newly installed at the Chiba No. 2 Plant.
  • July 2000: International quality standard ISO9002 certification acquired.
  • May 2002: International quality standard ISO9001:2000 transition review completed.
  • March 2004: Headquarters relocated from Shiratori, Katsushika-ku to Oshiage, Sumida-ku.
  • April 2004: International quality standard ISO9001:2000 acquired at Sapporo Plant.
  • July 2004: Slitter line No. 2 (SL-2) installed at Chiba Plant No. 2.
  • March 2006: Sapporo Plant No. 2 (Hassamu, Nishi-ku) acquired.
  • February 2007: Warehouse adjacent to Chiba Plant No. 2 acquired.
  • November 2011: Patent No. 4859538, “Method of Manufacturing Stainless Steel Sheets”.
  • December 2011: Patent No. 4878159, “Rotating Surface Reducing Head, Electrolytic Surface Reducing Equipment and Method of Electrolytic Surface Reducing”.
  • December 2014: EGR grinding related patents – 3 EPs and 1 in China.
  • February 2016: Patent No. 5889891, “Method of Manufacturing Steel”.
  • August 2018: One patent “Method of Manufacturing Steel Materials” granted in South Korea.
  • June 2019: Investment in equipment expansion of the Chiba Plant’s intermediate-thickness buffing line completed (approx. 1 billion yen).
  • October 2021: Welfare facility building (FUSHUKAN) renovated at Chiba Plant.
  • November 2021: Ceremony held to celebrate the 70th anniversary of the company’s founding.
  • November 2022: Website completely redesigned