Message from the President
Since our founding in 1952, PROSTEEL Co., Ltd. has remained committed to supporting the manufacturing industry through the processing and distribution of a wide range of steel products. We have been able to build our business over the years thanks to the support of our customers, business partners, and the communities in which we operate, and I would like to express my heartfelt gratitude to all of them. The trust we have earned over many years is our most valuable asset. We will continue to build on that trust steadily, one step at a time.
One of our key strengths is our ability to combine the market intelligence, sales capabilities, and solution-proposal expertise of the Toyota Tsusho Group with our own inventory, processing, and logistics operations. By leveraging information gathered from Japan and around the world, we accurately identify our customers’ needs and operational challenges, delivering the right products at the right time and with dependable quality. We believe that these ongoing efforts are what create value and serve as the foundation of the trust our customers place in us.
Guided by our commitment to Safety First and Uncompromising Quality, every employee approaches each task with professionalism, pride, and a strong sense of responsibility. By staying closely connected to all of our stakeholders—including customers, business partners, local communities, and employees—we strive to be a company that is trusted and continues to be the partner of choice for all those we serve. With our sights set on becoming a company that thrives for the next 100 years, we will preserve the values and strengths that define us while continuing to refine and enhance what we do best. In doing so, we will carry our company forward and pass it on to the next generation.
Corporate Philosophy
We are committed to fulfilling our social responsibilities and conducting our business with integrity and fairness.
We always approach our customers with gratitude, striving to earn their trust and deliver added value.
We place safety and health first, respect each other, and work to build a vibrant, rewarding workplace.
We value creativity, embrace change without fear, and aim to be a team of professionals who courageously take on every challenge.
Safety and Health Policy, Quality Policy, and Environmental Policy
Guided by the core principle of “Respect for Humanity,” we devote our full efforts to safety and health activities
and create a safe, healthy, and comfortable work environment.
<Action Guidelines>
- Acting with “Safety First” in mind.
- Complying with all applicable safety and health laws and regulations, and with work procedures at customer sites.
- Based on the principle of observing actual sites and actual conditions, establishing necessary internal standards, setting safety and health targets, and carrying out activities involving all employees to achieve those targets.
- Operating the occupational safety and health management system reliably and promoting continuous improvement through the PDCA cycle.
- Providing necessary and sufficient education and training to ensure safety and health.
By fully adopting a customer perspective and continuously improving the quality of our products, services, and work, we earn our customers’ trust and confidence.
<Action Guidelines>
- Always thinking and acting from a customer perspective with personal ownership.
- Setting quality targets and carrying out activities involving all employees to achieve those targets.
- Conducting management reviews reliably and promoting continuous improvement through the PDCA cycle.
- Ensuring swift and accurate responses if defects occur, preventing issues from being forgotten, and reliably passing down lessons learned.
- Complying with laws and regulations, and meeting customer requirements.
- Strengthening proposal capabilities by meeting and anticipating customer needs and expectations.
As a good corporate citizen, we strive to prevent environmental pollution through our corporate activities, protect a livable global environment, and contribute to building a people-friendly society.
<Action Guidelines>
- Acting with consideration for the environment.
- Promoting activities aimed at resource conservation, energy conservation, and resource recycling, and contributing to the realization of a circular society.
- Complying with environmental laws and regulations, industry standards, and other requirements to which the company has agreed, and contributing to the preservation of the global environment.
- Providing thorough education for all employees to establish and continuously improve the environmental management system and raise awareness of environmental issues.
The Story Behind Our Name and Logo
Company Name
The name “PROSTEEL” was created in 1995 through an employee competition.
The word “PRO” embodies ideas such as “PROACTIVE” (anticipating needs), “PROGRESS” (moving forward),
“PRODUCE” (creating), and “PROSPER” (prosperity). We aim to be a
“PROFESSIONAL” company and to develop professionals trusted by our customers.
Company Logo
- The circle and square, inspired by steel coils and sheets, are connected in the shape of a fan to express our wish for ever-expanding prosperity.
- The circle represents harmony among employees, the blue color of the fan represents health and hope, and the diagonal square expresses the growth of employees and the company.
- We wish for the prosperity of the company, together with the harmony and good health of all employees.
PROSTEEL by the Numbers
As of March 2025
Company Profile
| Company Name | PROSTEEL Co., Ltd. |
|---|---|
| Head Office | 1908 Oneyama 1-chome, Midori-ku, Nagoya-shi, Aichi 459-8501 |
| Main Factory | 1903 Oneyama 1-chome, Midori-ku, Nagoya-shi, Aichi 459-8501 |
| Office | Hamamatsu Sales Office, 14F Hamamatsu Act Tower, 111-2 Itayamachi, Chuo-ku, Hamamatsu-shi, Shizuoka 430-7714, Japan |
| Established | December 1952 |
| Capital | 310 million yen |
| Shareholder | Toyota Tsusho Corporation |
| President and Representative Director | Takaaki Miyamoto |
| Employees | 95 in total (Fiscal year ended March 2025) |
| Annual Sales | Approx. 29.7 billion yen (Fiscal year ended March 2025) |
| Monthly Handling Volume | Approx. 10,000 tons |
| Monthly Processing Volume | Approx. 5,000 tons |
| Site Area | Head Office: Total site area 27,750 m² (factory site area 8,552 m²)Hamamatsu Sales Office: Total site area 1,325 m² (factory site area 474 m²) |
Business Partners
- Main Business Partners
-
- Major Customers
-
- Aisan Industry Co., Ltd.
- AISIN CORPORATION
- Aisin Shiroki Corporation
- Advanex Inc.
- NTN Corporation, IWATA WORKS
- FTS CO., LTD.
- OCHIAI CUTLERY MANUFACTURING CO., LTD.
- KATSUYAMA FINETECH co., ltd.
- KATO WORKS CO., LTD.
- KANEFUSA CORPORATION
- KYOWA KOGYO CO., LTD.
- Shachihata Inc.
- Shinnichi kogyo co., ltd.
- SHIN NIHON FASTENER CO., LTD.
- Sugino Press Co., Ltd.
- Seki Metal Industry Cooperative
- TAITO KOGYO Co., Ltd.
- Chuo Spring Co., Ltd.
- DENSO CORPORATION
- DENSO ELECTRONICS Co., Ltd.
- TOKAI KOGYO CO., LTD.
- Tokai Tokusosha Co., Ltd.
- TOKAI RIKA CO., LTD.
- TOKAI RIKI Co., Ltd.
- TOGO SEISAKUSYO CORPORATION
- TOYO KITCHEN STYLE Co., Ltd.
- TOYOTA BOSHOKU CORPORATION
- TOYOTOMI CO., LTD.
- Toyotomi Kiko Co., Ltd.
- NIPPA CO., LTD.
- Panasonic Switchgear Systems Co., Ltd.
- HAMANAKODENSO CO., LTD.
- Futaba Industrial Co., Ltd.
- Matsuo Industries, Inc.
- MARUYASU INDUSTRIES CO., LTD.
- MIYAMA KOGYO CO., LTD.
- MIWA LOCK Co., Ltd.
- Meiko Spring Co., Ltd.
- Manufacturers
-
- NIPPON STEEL CORPORATION
- JFE Steel Corporation
- Kobe Steel, Ltd.
- NIPPON KINZOKU CO., LTD.
- POSCO
- Daido Steel Co., Ltd.
- TAKASAGO TEKKO K.K.
- Namitei Co., Ltd.
- NICHIA STEEL WORKS, LTD.
- OSAKA HEAT-TREATMENT CO., LTD.
- HAYASHIO STEEL CO., LTD.
- UACJ Corporation
- Nippon Light Metal Company, Ltd.
- ALMINE Co., LTD.
- Proterial Metals, Ltd.
- MA Aluminum Corporation
- Honda Metal Industries Vietnam, Ltd.
- Yasuda Metal Industries, Ltd.
- KATAGI ALUMINUM PRODUCTS LTD.
Locations
- Head Office
-
1908 Oneyama 1-chome, Midori-ku, Nagoya-shi, Aichi 459-8501
Tel: 052-629-1811 Fax: 052-624-2828
- Main Factory
-
1903 Oneyama 1-chome, Midori-ku, Nagoya-shi, Aichi 459-8501
Tel: 052-629-1855 Fax: 052-622-6014
- Hamamatsu Sales Office
-
14F Hamamatsu Act Tower, 111-2 Itayamachi, Chuo-ku, Hamamatsu-shi, Shizuoka 430-7714, Japan
Tel: 053-448-7811 Fax: 053-449-2049
