JFE Plant Engineering Co., Ltd.

JFE Plant Engineering Co., Ltd. (JFEプラントエンジ株式会社) is a Japanese engineering company headquartered in the Kuramae district of Taito-ku, Tokyo, operating from the JFE Kuramae Building. It is a wholly owned subsidiary of JFE Steel Corporation, the steelmaking arm of the JFE Group, and traces its corporate roots to April 1937, when it was established in Kobe as Kabushiki Kaisha Nunobiki Seisakusho. The present company was formed in April 2016 through the merger of JFE Mechanical Co., Ltd. and JFE Densetsu Co., Ltd., consolidating decades of mechanical and electrical engineering heritage within the Kawasaki Steel and later JFE lineage. The company's core strength is the integrated handling of mechanical and electrical/control technologies. According to its own corporate profile, it maintains six locations nationwide and employs roughly 3,000 engineers, with more than 200 certified supervising engineers. It provides a one-stop capability spanning design, construction and maintenance, delivering technical solutions tailored to the needs of diverse industrial sites. Its stated ambition is to remain a company chosen for its technology and trust, built on a commitment to safety and quality and on human-resource development. JFE Plant Engineering serves heavy-industry customers across several segments. Its published business domains include steel and non-ferrous metal plants, oil and chemical plants, and shipbuilding yards. For these customers it offers construction work such as steel-structure erection, special demolition, piping, electrical facilities, electrical control systems, instrumentation control systems and power receiving/distribution equipment; maintenance services such as equipment diagnosis, motors and generators, compressors and turbines, hydraulic equipment, electrical and instrumentation facilities, on-site machining and crane maintenance; and manufactured products including cranes, automated warehouses, blast machines, pressure vessels and large steel structures. Financially, the company reported revenue of 195,826 million yen for the fiscal year ended March 2026 and had 3,762 employees as of the end of March 2026, with stated capital of 1.7 billion yen. Its representative director and president is Hiroyuki Yamamoto. The company holds numerous construction-business licenses from the Ministry of Land, Infrastructure, Transport and Tourism, along with electrical, telecommunications, worker-dispatch and second-hand goods dealer permits, and maintains ISO 9001 and ISO 14001 certifications at several worksites. It also coordinates a network of group companies and the JF Association (JF会) of cooperating firms, which the website describes as comprising 150 member companies. Its main bank is Mizuho Bank.

The corporate lineage of JFE Plant Engineering begins in April 1937, when a company named Kabushiki Kaisha Nunobiki Seisakusho (株式会社布引製作所) was established in Kobe. In November 1959 it changed its name to Kawasaki Denki Kogyo Co., Ltd. (川崎電機工業株式会社). In April 1978 it absorbed Ikuhama Tekko Co., Ltd. (生浜鉄工株式会社) and adopted the name Kawasaki Steel Structure Industry Co., Ltd. (川鉄鉄構工業株式会社). In July 1994 it was renamed Kawasaki Machinery Co., Ltd. (川鉄マシナリー株式会社). In April 2004, Kawasaki Machinery merged with Maintenance Kiko Co., Ltd. (メンテック機工株式会社) and was renamed JFE Mechanical Co., Ltd. (JFEメカニカル株式会社). A parallel electrical-engineering lineage began in April 1973 with the founding of Kawasaki Electric Facility Construction Co., Ltd. (川鉄電気設備工事株式会社). In January 1987 it was renamed Kawasaki Densetsu Co., Ltd. (川鉄電設株式会社). In April 2004, Kawasaki Densetsu was integrated with the electrical division of Maintenance Kiko and with KDK Elecis Co., Ltd. (ケーディーケーエレシス株式会社) to form JFE Densetsu Co., Ltd. (JFE電制株式会社). In April 2016, JFE Mechanical and JFE Densetsu merged to create JFE Plant Engineering Co., Ltd. (JFEプラントエンジ株式会社), the present entity. This merger combined the mechanical-engineering and electrical/control-engineering traditions of the two predecessor companies into a single organization capable of handling both disciplines in an integrated way. Since its formation, the company has continued to consolidate and reorganize its group network. On April 1, 2022, JFE Mechafront Hanshin Co., Ltd. was dissolved, with its roll-grinding business inherited by JFE Mekatechno Co., Ltd. and its other businesses inherited by JFE Mechafront Kurashiki Co., Ltd. Also on July 1, 2022, JFE Mechafront Chiba Co., Ltd. and JFE Mechafront Keihin Co., Ltd. merged to form JFE Mechafront East Japan Co., Ltd. The company's group now includes JFE Mechafront East Japan, JFE Mechafront Kurashiki, Sanwa Keiden Co., Ltd., JFE Mechafront Fukuyama, JFE Mekatechno, and JFE Mechanical Vietnam Co., Ltd., the last established in September 2011 in Dong Nai Province, Vietnam, for the design and fabrication of machinery and steel structures. Today the company presents itself as a nationwide engineering services provider with six locations, roughly 3,000 engineers and more than 200 certified supervising engineers, serving over 2,500 companies across industries and coordinating the JF Association of 150 member cooperating companies.

• 2022

  JFE Mechafront Hanshin dissolved; roll-grinding business inherited by JFE Mekatechno, other businesses by JFE Mechafront Kurashiki.

• 2022

  JFE Mechafront Chiba and JFE Mechafront Keihin merged to form JFE Mechafront East Japan Co., Ltd.

• 2016

  JFE Mechanical and JFE Densetsu merged to form JFE Plant Engineering Co., Ltd.

• 2011

  JFE Mechanical Vietnam Co., Ltd. established in Dong Nai Province, Vietnam.

• 2004

  Kawasaki Machinery merged with Maintenance Kiko to become JFE Mechanical Co., Ltd.; Kawasaki Densetsu integrated with Maintenance Kiko's electrical division and KDK Elecis to form JFE Densetsu Co., Ltd.

• 1994

  Renamed Kawasaki Machinery Co., Ltd.

• 1987

  Kawasaki Electric Facility Construction renamed Kawasaki Densetsu Co., Ltd.

• 1978

  Absorbed Ikuhama Tekko Co., Ltd. and renamed Kawasaki Steel Structure Industry Co., Ltd.

• 1973

  Kawasaki Electric Facility Construction Co., Ltd. founded, beginning the electrical-engineering lineage.

• 1959

  Renamed Kawasaki Denki Kogyo Co., Ltd.

• 1937

  Established in Kobe as Kabushiki Kaisha Nunobiki Seisakusho.

Integrated mechanical plus electrical/control engineering provider for heavy-industry plants, emphasizing one-stop design-to-maintenance service, safety, quality and nationwide coverage.

• Cranes

• Automated warehouses

• Blast machines

• Pressure vessels

• Large steel structures

• Electrical control systems

• Instrumentation control systems

• Power receiving/distribution equipment

• General-purpose drive devices

• Equipment diagnosis services

• On-site machining

• Crane maintenance

1. 1JFEプラントエンジ株式会社 (official website homepage)jfe-planteng.co.jp
2. 2会社概要 | JFEプラントエンジ株式会社jfe-planteng.co.jp
3. 3会社情報 | JFEプラントエンジ株式会社jfe-planteng.co.jp
4. 4グループ会社一覧 | JFEプラントエンジ株式会社jfe-planteng.co.jp
5. 5JFE Plant Engineering Co., Ltd. (Japan) — Wikidatawikidata.org