ISO/TS 16949:2009

Tokyo Foundry Co.,Ltd.

Corporate Profile

Company Name Tokyo Foundry Co.,Ltd.
Chairman Tetsuo Saito
President & CEO Jun Ozawa
Company Address Kamitoyooka-machi 561-8, Takasaki, Gunma Pref.,
ZIP: 370-0871
TEL. +81-27-343-5168
FAX. +81-27-343-5161
Shinto Plant Shinto-Village 3059, Kita-Gunma Gunma Pref.,
ZIP: 370-3504
TEL. +81-279-54-1270
FAX. +81-279-54-1271
URL http://www.aluminum-gravity.com
E-mail info@aluminum-gravity.com
Paid Up Capital 100 Million JPY
Established in 1929 Started operations as Saito foundry
March 1950 Established as Tokyo Foundry Co.,Ltd.
Number of Employees


Site Area 13,225m2
Business Content

• Gravity die-casting of aluminum, both for low and high volume projects with highest requirements on geometrical complexity and pressure resistance. Production development from sand-casted prototypes to high volume serial production.

• Other casting processes, e.g. low pressure die casting and H-Process.

• In cooperation with our partner company: Ductile iron casting (H process) including design and manufacture of molds and machining for the parts.

Melting and holding furnaces : 2
Holding furnaces : 7
Crucible furnaces : 5
GDC90° Type : 9
GDC45° Type : 5
LPDC : 8
Core shooting
Shell machines : 2
Heat treatment furnace
T5 Furnace : 2
Emission spectrometry analyzer : 1
X-Ray tester : 1
Hardness tester : 2
Pinhole tester : 2
3D Coordinate measuring machine : 1
Optical microscope : 1
Mold maintenance
Shot blast machine : 2
Lathe : 1
Drilling machines : 2
Argon welding machine : 1
CAD Stations : 3

Hitachi Construction Machinery
Nukabe Corporation
Tohatsu Corporation
Fujikoshi Corporation


Group Companies NAIGAI Co., Ltd.
Simplex Naigai Castings Private Limited (India)
Co-operating Companies Naigai Malleable Iron Co., Ltd. 
Aizu Kojou Co., Ltd. 
Ming Ming Aluminium Co.Ltd. 
1929 Started operations as Saito foundry
March 1950 Established as Tokyo Foundry Co.,Ltd. - Start of aluminum casting production
1979 Start production at the Gunma plant - gravity casting & low pressure casting
January 2012 Tokyo Foundry becomes a 100% subsidiary of Naigai Co.,Ltd.
December 2013 Integration of NAIGAI’s production lines
February 2014 "Small business IT management certification" awarded by the Ministry of Economy, Trade and Industry (METI)
21 July 2015 Tokyo foundry and Naigai acquired the certification of a quality management system "ISO/TS 16949:2009".
2 Feburuary 2018 ISO14001:2015 Certification
13 July 2018 IATF 16949:2016 Certification