Ishii IRON Works Co., Ltd.

Ishii IRON Works Co., Ltd. (株式会社石井鐵工所) is a Japanese engineering and manufacturing company headquartered in Tokyo, founded in 1900 by Taikichi Ishii in the Tsukishima district of Tokyo. The company began by fabricating boilers and storage vessels and grew alongside the development of Japanese industry into a specialist tank and plant manufacturer serving the oil, chemical, steel, electric power and gas sectors. Its corporate motto, 'Gijutsu Hōkoku' (technology in service of the nation), dates from the founder's era and remains its guiding principle. The company's core Steel Structure (鉄構) business supplies storage and process equipment to essential industries worldwide: cryogenic tank terminals, vertical cylindrical tanks and LNG satellite bases, spherical tanks and gas holders, atmospheric (flat-bottom) tanks, and seismic reinforcement and maintenance services. Its Real Estate business develops apartments, logistics facilities, commercial buildings and solar power installations on company-owned land. Ishii IRON Works has delivered projects in more than 40 countries since its founding, with reference projects including cryogenic tank terminals in Singapore, LPG terminals in Tianjin and Shenzhen, a liquefied ammonia terminal in Taichung, Taiwan, LNG tanks in Hokkaido, and LNG satellite systems in Miyazaki, Kyoto and Iwate. Historically the company has been a pioneer in Japanese gas and petroleum infrastructure. It built Japan's first M.A.N.-type waterless gas holders in 1928, Japan's first spherical tanks in 1954, and conducted the world's first continuous reproduction experiments on low-temperature brittle fracture of spherical tanks in 1959, presenting the results to the International Institute of Welding. It was listed on the First Section of the Tokyo Stock Exchange in 1949. Today Ishii IRON Works positions itself around the transition to a carbon-neutral society (GX, Green Transformation), promoting cryogenic tanks for fuel ammonia, resilient equipment able to withstand tsunamis and earthquakes, and maintenance solutions for aging energy infrastructure. The company is led by President and CEO Hiroaki Ishii, a member of the founding family.

Ishii IRON Works was founded in 1900 by Taikichi Ishii, who established an ironworks in Tsukishima, Tokyo, and began manufacturing boilers and storage vessels. Tsukishima, a reclaimed land area completed in 1892, was home to many metal and machinery factories, and the company grew within this industrial cluster. In its early decades the company built a series of landmark structures. In 1907 it completed the Oebashi steel road bridge in Yokohama. In 1914, using its own technology and domestically produced materials, it completed a 28,300 m³ water-sealed gas holder for Kobe Gas Company (now Osaka Gas), then the largest in Japan. In 1919 the company was incorporated as Ishii IRON Works Co., Ltd. with capital of 1 million yen. In 1921 it delivered a large Stoney gate and about 100 transmission towers for Tokyo Electric Light's Inawashiro power station. The 1923 Great Kanto Earthquake destroyed its head office and factory, but operations resumed within the same year. Through the 1920s and 1930s the company contributed to the expansion of Japan's gas, petroleum and chemical industries. In 1928 it completed Japan's first M.A.N.-type waterless gas holders of 84,900 m³ and 56,600 m³. In 1930 it delivered ten 12,000-ton oil tanks to the North Sakhalin oil trust in the Soviet Union. In 1932 it completed a 28,300 m³/day water-gas production facility for Chosen Coal Industry, establishing itself as a pioneer in hydrogen and fuel-gas production equipment. In 1934 it delivered eight 18,000 kL oil tanks to Nippon Oil (now ENEOS) at Tsurumi, and completed Japan's first alumina electrolytic cell for Nippon Electric Industry (now Resonac). The head office moved several times, and in 1938 the company absorbed its subsidiary Nippon Chemical Machinery Co., Ltd. (capital 4 million yen), which became its Kamata Works (now the Haneda office). After World War II the company supported the reconstruction of fertilizer, petroleum and gas facilities. In 1949 it was listed on the First Section of the Tokyo Stock Exchange. In 1954 it completed a 175,000 m³ water-sealed gas holder for Tokyo Gas's Takinogawa pressure-regulating station, then the largest in the Orient, and Japan's first nine spherical tanks for Daikyo Oil's Yokkaichi refinery (now Cosmo Oil). In 1956 it delivered 55 tanks including 20,000 kL floating-roof tanks and a flare stack to Idemitsu Kosan's Tokuyama refinery. In 1958 it completed two 50,000 kL floating-roof tanks, then the world's largest. In 1959 it succeeded in the world's first continuous reproduction experiments on low-temperature brittle fracture using a full-scale spherical tank, presenting a paper to the International Institute of Welding. In 1961 it delivered 45 tanks including 22,000 kL tanks in the Philippines, and in 1964 it developed steel pools and pool/skating-rink combinations, subsequently installed at many educational and leisure facilities. In 1966 it completed a 2,000 kL single-shell cryogenic tank and the world's largest steel pool/skating rink of the time. In the decades that followed, Ishii IRON Works continued to supply cryogenic tank terminals, LNG satellite systems, spherical tanks and gas holders, and atmospheric tanks to customers in Japan and overseas, with projects in more than 40 countries. Its Real Estate business developed apartments, logistics facilities, commercial buildings and solar power installations on company-owned land. In the 2020s the company has positioned itself around the green transformation (GX), promoting cryogenic tanks for fuel ammonia, resilient equipment for tsunami- and earthquake-prone Japan, liquefied CO2 tanks for CCS/CCUS, and maintenance solutions for aging energy infrastructure. The company is led by President and CEO Hiroaki Ishii.

• 1966

  Completes a 2,000 kL single-shell cryogenic tank and the world's largest steel pool/skating rink of the time.

• 1964

  Develops steel pools and pool/skating-rink combinations, installed at many educational and leisure facilities nationwide.

• 1961

  Delivers 45 tanks including 22,000 kL tanks in the Philippines.

• 1959

  Succeeds in the world's first continuous reproduction experiments on low-temperature brittle fracture using a full-scale spherical tank; presents a paper to the International Institute of Welding.

• 1958

  Completes two 50,000 kL floating-roof tanks, then the world's largest.

• 1956

  Delivers 55 tanks including 20,000 kL floating-roof tanks and a flare stack to Idemitsu Kosan's Tokuyama refinery.

• 1954

  Completes a 175,000 m³ water-sealed gas holder for Tokyo Gas's Takinogawa station, then the largest in the Orient, and Japan's first nine spherical tanks for Daikyo Oil's Yokkaichi refinery (now Cosmo Oil).

• 1949

  Listed on the First Section of the Tokyo Stock Exchange.

• 1938

  Absorbs subsidiary Nippon Chemical Machinery Co., Ltd., which becomes its Kamata Works (now Haneda office).

• 1934

  Delivers eight 18,000 kL oil tanks to Nippon Oil (now ENEOS) at Tsurumi and completes Japan's first alumina electrolytic cell for Nippon Electric Industry (now Resonac).

• 1932

  Completes a 28,300 m³/day water-gas production facility for Chosen Coal Industry, establishing a pioneering position in hydrogen and fuel-gas equipment.

• 1930

  Delivers ten 12,000-ton oil tanks to the North Sakhalin oil trust in the Soviet Union.

• 1928

  Completes Japan's first M.A.N.-type waterless gas holders of 84,900 m³ and 56,600 m³.

• 1923

  Head office and factory destroyed by the Great Kanto Earthquake; operations resume within the same year.

• 1921

  Delivers a large Stoney gate and about 100 transmission towers for Tokyo Electric Light's Inawashiro power station.

• 1919

  Incorporated as Ishii IRON Works Co., Ltd. with capital of 1 million yen.

• 1914

  Completes Japan's largest 28,300 m³ water-sealed gas holder for Kobe Gas Company (now Osaka Gas).

• 1907

  Completes the Oebashi steel road bridge in Yokohama.

• 1900

  Taikichi Ishii founds an ironworks in Tsukishima, Tokyo, beginning manufacture of boilers and storage vessels.

A specialist engineering and tank manufacturer for energy and process industries, known as 'Ishii of Tanks', positioning itself around carbon-neutral transition (GX), resilience against natural disasters, and maintenance of aging energy infrastructure.

• Cryogenic tank terminals

  Low-temperature storage terminals for LNG, LPG, ammonia and other cryogenic gases, delivered in Japan and overseas.

• Vertical cylindrical tanks and LNG satellite bases

  Vertical cylindrical tanks and LNG satellite systems for distributed gas supply.

• Spherical tanks and gas holders

  Spherical storage tanks for LPG, propylene and city gas, and gas holders.

• Atmospheric (flat-bottom) storage tanks

  Floating-roof and fixed-roof atmospheric tanks for oil and petroleum products.

• Seismic reinforcement and maintenance services

  Reinforcement, repair and maintenance solutions for aging energy infrastructure, including tsunami-resistant tank structures.

• Liquefied CO2 tanks for CCS/CCUS

  Liquefied CO2 storage tanks supporting carbon capture and storage/utilization.

• Real estate development

  Apartments, logistics facilities, commercial buildings and solar power installations developed on company-owned land.

1. 1株式会社石井鐵工所 | 鉄構の力でサステナブルな世界を実現するishii-iiw.co.jp
2. 2石井鐵工所の歴史 | 株式会社石井鐵工所ishii-iiw.co.jp
3. 3私たちについて | 株式会社石井鐵工所ishii-iiw.co.jp
4. 4トップメッセージ | 株式会社石井鐵工所ishii-iiw.co.jp
5. 5Ishii IRON Works Co., Ltd. (Japan) - Wikidatawikidata.org