IHI Corporation, originally founded in 1853 as Ishikawajima Shipyard, is a diversified Japanese heavy machinery and engineering company headquartered in Tokyo. Over its long history, the firm has evolved through mergers and technological innovations to become a global supplier of complex industrial systems. IHI’s legacy spans shipbuilding, infrastructure development and manufacturing of industrial machinery, reflecting more than a century and a half of engineering expertise.
The company operates across several key business segments. In its Aero Engine & Space segment, IHI develops, manufactures and maintains aircraft engines, rocket engines and auxiliary power units. Its Energy & Plant division designs and constructs power generation facilities, including gas turbines, boilers and environmental control systems. IHI’s Infrastructure & Offshore Facilities arm provides offshore oil and gas production platforms, bridges and tunnel construction, while its Industrial Systems & General-Purpose Machinery unit supplies compressors, pumps and material-handling equipment.
IHI serves customers in Asia, Europe, the Americas and the Middle East, partnering with utilities, shipbuilders, aerospace companies and industrial firms worldwide. The company has production bases and technical centers in Japan, China, the United States and several other countries, enabling it to deliver localized support and maintenance services. Strategic alliances with international engineering groups further extend its global reach.
Committed to innovation and sustainability, IHI invests in research and development of next-generation energy solutions, such as hydrogen and carbon-capture technologies, as well as advanced manufacturing methods like additive manufacturing. Through this focus on technology and environmental stewardship, the company aims to address global challenges in energy security, decarbonization and infrastructure resilience.
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