COMPANY PROFILE Japanese

World's No. 1 Company with technology to protect metal products from rust and corrosion

TAKENAKA SEISAKUSHO CO., Ltd.

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Address 578-0984
178, Hishie, Higashiosaka, Osaka Japan
Telephone +81-(0)6-6789-1555
Facsimile +81-(0)6-6782-2053
E-mail fastener@takenaka-mfg.co.jp
Representative Hirotada Takenaka
Establishment 1935
Capital 46,800,000yen
Employees 150persons
Main business Special steel precision nuts & bolts and electronic device products

Business results
Business Policy: Increasing value added by developing proprietary or differentiated products.
1) Staying on top of the world in the manufacture and sale of special steel precision screws;
2) Keeping the top share in the global market by expanding sale of rust and corrosion resistant TAKECOAT-1000 nuts and bolts;
3) Retaining a predominant position in the market of nuts and bolts for use in nuclear power plants; and
4) Developing, designing, and manufacturing motor control, image processing, electromagnetic induction heating products.
・Tokyo Office
 1-9-6, Iwamoto-cho, Chiyoda-ku, Tokyo 101-0032 Japan
  Phone: +81-3-3862-5595 Fax: +81-3-3862-6177
  E-mail:takenaka@violin.ocn.ne.jp
・Corrosion Engineering Divisin
 1-7-8,Hishie,Higashiosaka,Osaka 578-0984 Japan
  Phone: +81-6-6782-2054 Fax: +81-6-6789-3270
・Okajima Works
 6-2-41, Minamiokajima, Taisho-ku, Osaka 551-0021 Japan
  Phone: +81-6-6552-3055 Fax: +81-6-6552-3057
・Electronic Devices Division
 178, Hishie, Higashiosaka, Osaka 578-0984 Japan
  Phone: +81-6-6789-3256 Fax: +81-6-6789-2346

The technological fields our company's technology relate to
Processing technology
Materials Processing Technology Products
Alloy steels, superalloy steels  Up to 350 mm in diameter
Up to 3,000 mm in length
Screw tolerance +-20 micron 
Ultraprecision nuts/bolts 
Difficult-to-machine materials  Precision forging (forging processing)  Nuts/bolts 
Fluorocarbon polymer
Ceramic 
Coating technology  Metal products in general 
  Motor control technology  Servo amps
Robot controller to take out plastic CD cases 
  Image processing technology  High speed parallel DSP boards
Monitoring cameras 
  Electromagnetic induction heating technology  Heat control panels
Food plate heaters 

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Technical capability
Heat treatment technology, quality assurance technology, and ultraprecision processing technology for special steel precision screws
Precision machining technology and quality control technology
Surface treatment technology to protect metal products from rust and corrosion
Motor control, image processing, electromagnetic induction heating technology

Employee certifications:
Grades 1 and 2 Lathe Operator, Corrosion Engineere Control Manager, Health Manager, Nondestructive Inspection, Information Technology Engineer, Electronic Device Assembly Engineer



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Name of Products Name of Components
Rust and corrosion resistant bolts, structural components and metal parts (TAKECOAT-1000)  Trans-Tokyo Bay Highway
Subway
Waterworks
Long Span Bridge between mainland and Shikoku Island
Desalination plant (UAE,SADI-ARABIA) 
Heat- and cold-resistant, long-term durable bolts, structural components and metal parts (TAKECOAT-CERAMIC 1)  Oil refining and petro-chemical complex
Heat exchanger for chemical plant 
Special steel precision screws, parts and metal parts, superalloy steel screws  Nuclear power plant
High-temperature and high-pressure vessel and container 
Motor control system  Super-small servo converter board 
Image processing system  Image compression/expansion board
Image checker 
Electromagnetic induction heating system  Plate heater
Supersonic flaw detector 

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Construction/building, construction materials, construction hardwares, industrial products, metals, threads/wires, metal-processed products, precision machines, electronic devices

Production capacity
Special precision nuts/bolts 300t a month
Nuts/bolts for nuclear power plants 20t a month
Fluorocarbon polymer-coated nuts/bolts 150t a month

Machine and equipments held
NC lathe (Okuma LH35-N) /8 units
Fully-automatic screw manufacturing line (Tsugami T-ROL25) /4 lines
Automatic rust and corrosion resistant surface treatment line (Kawasaki Hevy-Industry KRE-310) /4 units
Heat treating (quench-and-temper) furnace for special steels (Toyo-ro Industries) /8 units
Precision screw testing equipment /1 set
Surface texture and contour measuring instrument (Tokyo Seimitsu Model 1800A-24) /1 unit

Machine and equipments held
2 patents for a bolt integrated with washer
1 patent for junction component
1 patent for heat-insulating refractory installing structure
1 patent for corrosion resistant connecting component and concrete structure
1 utility model for anti-corotation bolt
3 utility models for washer-integral fastening
1 utility model for a bolt for fastening bow-shaped objects
2 registered designs for nut-washer fastening ring
1 registered design for a bolt

Machine and equipments held
Bolt Division & Corrosion Engineering Division: ISO9001-2000 (JQA-0872) certification
Electronic Devices Division: ISO9001-2000 (02QR-934) certification
Bolt Division: 4 JIS (Japan Industrial Standard) approvals
Approved and designated factory for manufacturing bolts for nuclear power plants (Approved by the Ministry of Economy, Trade and Industry)
ASME/M, M, MS approved factory (US Nuclear Industry Standard)
TUV approved factory (German approval for manufacturing pressure vessels)
Rust/corrosion resistant bolts (TAKECOAT-1000): Approved by Civil Engineering Technical Center of the Ministry of Land, Infrastructure and Transportation;
Dept. of Waterworks, Osaka Prefecture; and Osaka Municipal Waterworks Bureau

Machine and equipments held
Make-to-order production system

Machine and equipments held
Forging, machining/grinding/polishing, thread tapping & rolling/piercing, surface treatment 2 (coating, polishing, etc.), heat treatment, and assembly/wiring


Homepage
http://www.takenaka-mfg.co.jp   TAKENAKA SEISAKUSHO CO., Ltd.