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IHI Plant Services Corporation

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Corporate brand

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Japanese engineering company within the IHI Group, engaged in design, fabrication and construction of plant and energy facilities.

Last updated September 16, 2026

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Overview

IHI Plant Services Corporation (株式会社IHIプラント, IPC) is a Japanese engineering company that positions itself as a core design, fabrication and construction engineering company within the IHI Group. Its product information page lists offerings including binary power generation equipment, renewable energy systems (wind and solar), LNG smart satellite, pressure vessels, heating furnaces, cooling towers, air-cooled heat exchangers, chimneys, crushers and the IC reactor. Its corporate history traces the company to the 1969 establishment of Dai-ni Seikan Kōji Co., Ltd. as a wholly owned subsidiary of Ishikawajima-Harima Heavy Industries (now IHI), and records subsequent mergers and the 2019 merger of three companies into the current IHI Plant name.

History

The company's history page records that in September 1969 Dai-ni Seikan Kōji Co., Ltd. was established as a wholly owned subsidiary of Ishikawajima-Harima Heavy Industries (now IHI) with capital of 20 million yen. In April 1974 it absorbed Dai-go Kōji Co., Ltd. and Dai-roku Kōji Co., Ltd. and was renamed Ishikawajima Plant Construction Co., Ltd. In April 2000 three companies — Ishikawajima Plant Construction (IPC), Ishikawajima Kikai Tekkō Engineering (IIK) and IHI Plantec (ITC) — merged. In July 2008 the company name was changed from Ishikawajima Plant Construction Co., Ltd. to IHI Plant Construction Co., Ltd. In April 2019 three companies — IHI Plant Construction (IPC), IHI Plant Engineering (IPEC) and IHI Process Plant SBU — merged and the company was renamed IHI Plant.

Products and positioning

A core design, fabrication and construction engineering company within the IHI Group.

  • Binary power generation equipment

  • Renewable energy (wind power, solar power systems)

  • LNG smart satellite

  • Pressure vessels

  • Heating furnaces

  • Cooling towers

  • Air-cooled heat exchangers

  • Chimneys

  • Crushers

  • IC reactor

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