Nakabohtec Corrosion Protecting Co., Ltd.

Nakabohtec Corrosion Protecting Co., Ltd. (株式会社ナカボーテック) is a Japanese company specializing in corrosion-protection engineering, with its head office in Chuo, Tokyo. The company describes itself as a leading company in cathodic protection (電気防食), the technique it positions as the most reliable method of preventing rust and extending the service life of infrastructure. Its stated purpose is to pursue corrosion-protection technology single-mindedly and to keep protecting the value of social infrastructure, thereby passing safe and secure daily life on to the next generation. The company's business is organized into five main fields. In its port and harbor business it protects marine structures — key logistics and production assets — using cathodic protection and petrolatum coating. Its underground business applies cathodic protection to lifelines such as gas and water pipes. Its onshore business protects factories and power plants. Its RC (reinforced concrete) business addresses salt damage in concrete structures. Its newest field, offshore wind, applies cathodic protection to offshore wind power facilities in support of sustainable living. Nakabohtec traces its founding to 1951 and has grown into a nationwide operator, with 16 domestic locations — branches, sales offices and its own plants — spanning from Hokkaido to Okinawa. It also sells zinc-based corrosion-protection materials under the ZAP series through a corporate online store. The company publishes technical materials, product catalogs, technical reports and papers, and engages in joint research, reinforcing its identity as a technology-led specialist rather than a general contractor. As a listed Japanese company, Nakabohtec discloses IR information including quarterly and full-year financial results, shareholder meeting notices, securities reports and a medium-term management plan. Recent disclosures referenced on its website include the formulation of a medium-term management plan, capital and business alliance agreements, changes among major shareholders, buybacks of its own shares, and the granting of restricted stock as compensation. The company also reports sustainability-related activity, including a first CDP climate change score of B- for fiscal 2025, and has run corporate advertising, including a corporate commercial on the Shibuya 109 Forum Vision and advertising for the ZAP series in Nikkei Trendy. In short, Nakabohtec is a niche but established Japanese infrastructure-services brand: a corrosion-protection engineering firm whose technology underpins the longevity of ports, pipelines, plants, concrete structures and the emerging offshore wind sector.

Nakabohtec Corrosion Protecting Co., Ltd. traces its origins to 1951, the year the company identifies as its founding. From that starting point it built a business around corrosion-protection engineering, a field concerned with preventing the deterioration of metal and concrete structures and thereby extending the useful life of infrastructure. Over the decades the company concentrated on cathodic protection — the electrochemical technique it describes as the most reliable method of preventing rust — and came to present itself as a leading company in that specialty. As Japan rebuilt and expanded its industrial and public infrastructure in the postwar period, demand grew for protecting marine structures, buried pipelines, factories and power plants from corrosion. Nakabohtec organized its activities around these needs, developing distinct business lines for ports and harbors, underground lifelines such as gas and water pipes, onshore industrial and power facilities, and reinforced-concrete structures subject to salt damage. The company also developed and sold corrosion-protection materials, notably the zinc-based ZAP series, which it now offers to corporate customers through an online store. By the 2020s the company had become a nationwide operator with 16 domestic locations — branches, sales offices and its own plants — covering Japan from Hokkaido to Okinawa. It continued to invest in technical development, publishing technical reports and papers, maintaining product catalogs, and conducting joint research. It also added a new business field, offshore wind, applying cathodic protection to offshore wind power facilities as Japan and other markets pursue renewable energy. As a listed company, Nakabohtec has reported its results and governance through regular IR disclosures. Its website references the 83rd ordinary general meeting of shareholders and the 83rd fiscal year securities report, indicating a long corporate history. In 2026 the company disclosed a series of significant corporate actions: the conclusion of a capital and business alliance agreement, the dissolution of a capital and technical tie-up, the acquisition of its own shares including through a ToSTNeT-3 off-auction buyback, changes among its major shareholders including its largest shareholder and other related companies, and the disposal of treasury shares as restricted stock compensation. It also formulated a medium-term management plan, implemented a base-up of compensation and revised its compensation systems, and reorganized its internal structure. On the sustainability and communications side, Nakabohtec published its first CDP climate change score — a B- for fiscal 2025 — and expanded its public-facing activities, including a corporate commercial on the Shibuya 109 Forum Vision and advertising for the ZAP series in Nikkei Trendy. These steps reflect a company that, while operating in a specialized engineering niche, presents itself as a modern, publicly accountable infrastructure-services brand.

• 2026

  Formulated the medium-term management plan '26 Chūkei'.

• 2026

  Concluded a capital and business alliance agreement and dissolved a capital and technical tie-up.

• 2026

  Acquired treasury shares, including via a ToSTNeT-3 off-auction buyback, and disclosed changes among major shareholders.

• 2026

  Disposed of treasury shares as restricted stock compensation.

• 2026

  Published first CDP climate change score of B- for fiscal 2025.

• 2026

  Began airing a corporate commercial on Shibuya 109 Forum Vision and ran ZAP series advertising in Nikkei Trendy.

• 1951

  Company founded, marking the start of its corrosion-protection business.

Technology-led specialist and self-described leading company in cathodic protection, protecting the longevity and value of social infrastructure.

• Cathodic protection engineering services

  Electrochemical corrosion-protection services applied across ports, underground pipelines, onshore plants and offshore wind facilities.

• Petrolatum coating corrosion protection

  Coating-based corrosion protection used particularly for marine structures.

• ZAP series zinc anti-corrosion materials

  Zinc-based corrosion-protection materials sold to corporate customers through an online store.

• RC salt-damage countermeasures

  Measures against salt damage in reinforced concrete structures.

1. 1トップページ｜株式会社ナカボーテックnakabohtec.co.jp
2. 2会社情報｜株式会社ナカボーテックnakabohtec.co.jp
3. 3製品カタログ｜技術情報｜株式会社ナカボーテックnakabohtec.co.jp
4. 4トピックス｜会社情報｜株式会社ナカボーテックnakabohtec.co.jp
5. 5Nakabohtec Corrosion Protecting Co., Ltd. (Japan) - Wikidatawikidata.org