Message from the President

Throughout its history, Seiwa has manufactured a variety of processed products made of stainless steel. We excel at applying our many years of experience and the most advanced welding and processing techniques to the manufacture of products that our customers can use with complete confidence.
In the 21st century, our approach to the products we use will continue to evolve.
Regardless of the type of product in question, neither the manufacturer nor consumer can ignore the products contribution to the global environmental and energy problems we face. Our corporate goal is to contribute to the health of the global environment and the conservation of energy by employing the expertise we have gained from the manufacture of stainless steel cylinders for electric water heaters.
Having adopted a corporate philosophy of ''demonstrating our
commitment to society through ceaseless innovation'',
we will continue to attribute our success to the support of
our customers and the public at large as we create products
that meet changing needs in step with the evolution of technology.
Moreover, our goal is to instill this spirit of innovation
in all our employees and contribute to their personal growth.
In closing, I would like to express my appreciation for
your support and patronage as we continue to dedicate
ourselves to the challenge of ceaseless innovation.

Company Outline
Name Seiwa Industrial Corporation
Business established April, 1962
Company founded December 15, 1965
Head office 3-105 Kitahonmachi, Itami, Hyogo 664-0836 Japan
and Main Plant Phone:+81-72-782-0281
URL:http://www.seiwa-ic.co.jp
Nara plant Showa Industrial Park, 1 Shigicho,
Yamatokoriyama, Nara 639-1039 Japan
Phone:+81-743-56-1062
Fukuchiyama plant 2758, Aza Osada Oono Shimo, Fukuchiyama, Kyoto 620-0851 Japan
Phone:+81-773-20-1135
Capitalization 24,000,000yen
Corporate officers President　　　　　　Seiichi Yamashita
Vice-president　　　 Kouji Hara
Executive director　 Kazuo Kashiwamura
Auditor　　　　　　　Kouji Fukatani
Annual Sales 4.5 billion yen
Number of employees 185
Bank references Senshu Ikeda Bank, Mukonoso Branch
Mitsui Sumitomo Bank, Itami Branch
Risona Bank, Kawanishi Branch
Primary businesses Manufacture of residential equipment
　(Electric water heaters, water heaters, commercial
　hot water tanks, etc.)
Manufacture of industrial environment equipment
　(Environment testers and testing equipment for research
　facilities, medical stainless steel products, boiler tanks,
　etc.)
Manufacture of equipment for space travel
　(Battery cases, etc.)

Corporate History
1962 Stainless steel processing and commercial kitchen equipment Manufacturing business is established.
1965 Company is incorporated.
1968 Manufacturing of tanks for small stainless steel electric water heaters begins.
Company enters the electric appliance market
1971 Production of mid-size enamel-lined tanks for electric water
heaters begins(with development of inner-surface welding technology.)
1974 Japanese Defense Agency awards the company MIL certification for stainless steel spot welding. Nara Plant is opened.
1977 Company is registered as a manufacturer of electric heating appliances.
1978 Assembly of small water heaters begins.
1983 Sterilizing hand washer is marketed.
1985 Company is granted a practical-use patent for its sterilizing hand washer.
Small stainless steel electric water heater is developed.
Production of mid-size cylindrical stainless steel electric water heater begins.
Inner-surface welding technique is refined.
1990 Company is granted a patent for its high-grade ferrite stainless steel cylinder manufacturing technique.
1996 Main Office plant No.2 begins operation.
2000 Main plant is awarded certification of registration with ISO14001.
Production of a high-pressure electric water heater begins.
2004 Main Office and Nara plant is awarded certification of registration with ISO9001
2005 Production of parts for fuel cells begins.
Nara Plant is awarded certification of registration with ISO 14001.
2006 Main Office plant No.2 expanded
2007 Fukuchiyama plant starts construction
Patent received for structural welding of cylinders
2008 High-volume production of steam reformers for fuel cells begins
Production of water heaters for aircraft begins
2009 Production of heat pump type water heater begins

Major Customers
Panasonic Corporation
Housetec Inc.
TOTO LTD.
LIXIL Corporation
Takara Standard Co.,Ltd.
SHIHEN TECHNICAL Corporation
DAIKIN INDUSTRIES, LTD
MITSUBISHI ELECTRIC CORPORATION		 Espec Corporation
NAGANO SCIENCE CO.LTD.
Sanden Corporation
Yamato Scientific Co.,Ltd.
Rinnai Corporation
GS-Yuasa Corporation
GASTAR Co.,Ltd etc.




Product

At home and in space,
Seiwa technology makes it possible.

Seiwa has contributed significantly to the evolution and acceptance of electric water heaters, a clean and safe technology. Our technology can be found not only in water heaters, but also in a variety of boilers, testing equipment for research facilities, and even in the aerospace industry. Here, we introduce just some of these products.

Environmental devices for
industrial applications

Seiwa technology has earned high praise for its successful application to boilers and other industrial products that require extremely high resistance to heat and corrosion. We provide a wide range of industrial tanks, including water heater tanks for vending machines and tanks for commercial tea servers. Moreover, we are diversifying into the field of environmental devices, which includes various boilers, experimental devices for academic and corporate research institutes, and small-scale water processing equipment for water treatment plants.

Aerospace products

Seiwa manufactures stainless steel battery cases for industrial
aerospace applications.

Residential-use products

The small electric water heaters and stainless steel sheet-metal welded tanks we offer for residential use are very user-friendly. In fact, they can be installed in any location offering water and electrical hook-ups.
Our mid-size laminated electric water heaters and EcoCute tanks, manufactured with Seiwa's renowned cylinder welding technology, have gained much publicity as highly trusted hot-water tanks.





Technology & Quality

Technology built on a culture of
innovation and dedication

Seiwa takes great pride in its inner-surface welding and stainless steel fabricating technologies,
as they are essential to the manufacture of high-quality electric water heaters.
One source of particular pride is our patented technology for high-quality welding of
stainless steel plates less than 1 mm thick.
Such advances, combined with superior quality control based on a rigorous trial
and testing program, enable us to provide reliable products with the greatest confidence.

Research and development of welding technology

Seiwa has accumulated a record of excellence as a provider of welding solutions. Our experience in developing numerous welding technologies led to our success in acquiring patents for various welding technologies, an innovation we developed for use in the manufacturing of tanks for electric water heaters. Conventional welds are prone to corrosion when exposed to water at temperatures of 85°C. We solved this problem by welding from the inner surface to the outer surface of the tank. This special welding method has significantly improved the corrosion resistance.

Product development grounded in
close cooperation with manufacturers

Our small and mid-size water heater segment has long benefited from our commitment to excellence in every step from planning to production. However, we are quickly establishing a record of experience and results in another area as well. Specifically, we are now combining our special welding technology-derived from many years of experience in stainless steel fabrication-to the field of industrial environmental devices. As a result, we are participating in the planning stages of development of environmental testers and test equipment for academic and corporate research facilities. Moreover, we have become increasingly active in the area of stainless steel products for medical applications such as incubators.

Selecting the most effective stainless steel alloys

The tanks of electric water heaters are made of highly corrosion-resistant stainless steel alloys, of which many are available. At Seiwa, we choose the ideal alloy for each particular tank application after carefully considering all relevant factors, including alloy processing method, durability requirements, and cost.


Testing pressure-and corrosion-resistance

At Seiwa, we implement a full suite of comprehensive quality control tests that give us complete confidence in all our products. For example, we test the integrity of our products by subjecting the tank interiors to extreme pressures. As well, we assess the corrosion resistance of welds on tanks made of a variety of stainless steel alloys.


Product development through planning,
analysis, and evaluation.

Seiwa proposes and delivers high-quality products to our customers, employing feedback in product design along with verified results from analysis and prototype evaluation for the joint strength of welded parts. We are developing a variety of welding machines to be used for production and are actively engaged in the automation of welding and process lines. For welding jigs, we are utilizing our many years of experience and know-how to design and develop original products. At Seiwa, our top priority is product quality, and we make daily efforts to improve product reliability.