Manufacturers Service

Kyoei Denko Co., Ltd.

1-17-7 Kawagishi-kami, 394-0048 Okaya-shi, Nagano

Telephone +81 25 5211008
Fax +81 25 5227801

This company is co-exhibitor of
Nagano Prefectural Federation of Small Business Associations


Hall map

COMPAMED 2016 hall map (Hall 8b): stand D03

Fairground map

COMPAMED 2016 fairground map: Hall 8b

Our range of products

Product categories

  • 11  Manufacturing Services
  • 11.13  Stainless steel polishing

Stainless steel polishing

Our products

Product category: Stainless steel polishing

Precision Polishing Technology

Our special polishing technique is an original method which was developed by working unflinchingly on the polishing of shapes and materials which many people abandon, saying that the polishing is difficult or impossible with conventional methods, such as grinding, electrolysis, blast, buff, and barrel. We can perform mirror finish of a rough surface along the shape. Please see processed examples below.

We achieved mirror finish of discontinuous surfaces such as peaks, sides, and valleys of the inner surface of a flexible tube used for semiconductor manufacturing equipment which represent ultra clean technology. As one of the key points of contamination control, there is a surface roughness of the inner surface of a fluid path pipe for pure water, high-purity gas, and chemical. Our special polishing could get the finished surface either equaling or surpassing electrolytic polishing or chemical polishing. Moreover, we can uniformly polish the whole area of the corrugated surface of vaccum seramic pinchuck

In the field of medicine or analytical equipment, the pipes which are narrow and bent, manufactured by spinning or to taper have been increasing, but we can polish them. We can polish pipes, if their inner diameter is 0.003inch and their length is 39.4inch or if their inner diameter is 0.007inch and their length is 78.8inch.

Proven Materials of Precision Polishing Technology
Stainless Steel SUS303,304,316,316L
- Fine Ceramics Silicon Carbide (SiC), Alumina, Aluminum Nitride
- Titanium
- Nickel Titanium
- Cobalt Chrome
- Inconel
- Hastelloy
- Tantalum
- Aluminum
- Quartz
- Molybdenum
- Zirconia
- Tungsten

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About us

Company details

We, business associates who have inherited the spirit of manufacturing from our senior associates since the establishment of our company, have continued to meet our clients’ demands.

Began operation in Okaya City in the region of Suwa, Nagano Prefecture, which is the birthplace of precision equipment industry in Japan.

We have earned many clients' trust as a professional of high precision processing and precision assembly since the establishment of our company. At present, we strengthen our ability to meet QCD by using the know-how we had accumulated and producing production equipment in our company for ourselves.

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