Japan Hume Corporation

Japan Hume Concrete Co., Ltd. founded. Tsuruumi Head Office Factory in operation, capital of 1 million yen.

Established Japan Hume Co., Ltd. on October 20, 1925 (Taisho 14).

Established Taisho 14 (October 20, 1925).

Set up Osaka factory, first dispatch production in Sakhalin and Ochiai.

Moved headquarters to Ginza, Tokyo, and renamed Japan Hume Pipe Co., Ltd. Opened Osaka branch.

Yawata factory and Yawata branch office established; China, Fengtian factory and branch office established.

Korea, Kyongju factory and Kyongju branch office established.

Relocated Tsuruumi factory, established Kawasaki factory.

China, Shanghai branch production.

Listed on the Tokyo Stock Exchange.

Hakodate factory, Hakodate branch, Tomakomai factory established, capital increased to 200 million yen.

Established pile factory in Kawasaki, started RC pile sales.

Developed NH seismic resistant joint, developed steel pipe lining method, started production.

Patented multilayer Hume pipe.

Completed new company building in Shinbashi, Minato-ku, Tokyo, and relocated headquarters.

First in Japan to manufacture and sell prestressed cylinder pipes, established Fuchu factory.

Established Nagoya factory, Nagoya branch, Tomakomai factory, capital increased to 200 million yen.

Established Wakamatsu Factory, capital increased to 300 million yen.

Established Kumagaya Factory, developed Hoei Hume Pipe for roadside ditches, capital increased to 600 million yen.

Established Mie Factory and Takikawa Factory, started manufacturing PC piles, Japan's first PC pile construction, capital increased to 800 million yen.

Established Okayama Factory and Asahikawa Branch Office, capital increased to 1 billion yen.

Developed CPC Pipe (High External Pressure Pipe).

Developed PC Well Method (Large Diameter Precast Piles) and Synthetic Steel Pipe. PC piles JIS factories established in Tomakomai, Kumagaya, Fuchu, Amagasaki, Wakamiya, and Hakodate.

Started manufacturing and selling PHC piles (SS piles).

Established Aomori Branch Office.

Manufacture and sale of PC Box Culvert.

Developed CPS Pile (Composite Pile).

Developed Flexible Hume Pipe and started production of SL piles for negative friction countermeasures.

Approved factories for synthetic piles, including Fuchu, Kumagaya, Mie, Amagasaki, Tomakomai, and Wakamiya.

Exported Hume Pipe Plant and provided technical assistance to Baghdad, Iraq. Developed 3S Pipe for thrust method, manufactured and sold small seamless pipes.

Established Aomori Factory, developed small-diameter 3S pipes.

At Mie Factory, produced concrete and steel composite structures for the world's first oil drilling concrete and steel hybrid movable artificial island.

Developed STJ Method (Low Noise and Low Vibration Pile Driving).

Expanded overseas business, exported technology to Australia and Indonesia, entered Hong Kong. Developed NH Connect Hole.

Entered real estate business, completed Kamimaru NH Building and started leasing. Developed AMP Pipe (Centrifugal Reinforced Laminated Pipe). Developed fiber optic laying robot.

Developed PFC Pipe (Corrosion-Resistant Pipe), established Japan Hume Concrete (Thailand) Limited. Completed Fuchu NH Building and started leasing, completed Biko NH Residence and started leasing.

Developed centrifugal molding corner pillars for building materials. Capital increased to 2,485 million yen.

Kumagai Construction Materials Factory becomes operational, capital increases to 5.2514 billion yen. First‑ever robot‑installed small‑diameter sewer pipe fiber‑optic cable laying work begins. New Bridge NH Building (headquarters building) completed in Shinbashi, Minato‑ku, Tokyo.

Obtained telecommunications construction business license related to fiber‑optic cable laying.

Established P.T. Hum Concrete Indonesia.

Completed manufacturing of ultra‑large segmented PC well (Chiba Urban Monorail) and large‑diameter PHC pile manufacturing. Developed PLC pipe (flow‑improvement pipe) and established new logo.

Completed manufacturing of ultra‑large joint trench (Makuhari) and established Asia Construction Materials Limited (Hong Kong).

Established P.T. Humex Bonatai Land Limited.

Sold Bickrite products, manufactured and installed precast guard fences (Keiyo Road).

Established P.T. Risa Concrete Indonesia and Humex Bonatai Land Limited.

Manufactured and installed large‑diameter PHC pile (1200 mm), developed PC basement, and developed automatic replacement method for foot‑mounted fittings.

Introduced ICP brace method, manufactured and installed modular C, manufactured and installed concrete fire water tank, manufactured and installed precast swimming pool, manufactured and installed Farm Bond.

Developed non‑welded joint pile (TPJoint).

Expansion of fiber‑optic cable laying robot technology into Europe.

Received "Excellent Contractor" award from the Tokyo Metropolitan Waterworks Bureau Director for five consecutive years of outstanding projects.

Completed Tsudayama NH Building and Sports Hall (Snowva Mizo no Kuchi‑R246), developed NK‑FK pile, Serifa FK method, and obtained ISO9001 for the industry's first Hum pipe and pile.

On its 75th anniversary, changed company name to Nihon Hum Co., Ltd.

Manufactured and sold ER pipe, launched website, and established Pipe Rehabilitation Division.

Developed seismic strengthening method for existing manholes.

Received "National Technology Development Award" from the Ministry of Land, Infrastructure, Transport and Tourism for Bickrite products.

Commenced corrosion inspection, diagnosis, and assessment services for sewer pipe facilities.

Developed HiBEM method and 3S segment method.

Initiated pipeline diagnosis business and developed HiFB method.

Started manufacturing assembled ultra-large diameter thrust pipes.

Developed New-STJ method and Floaterless method.

Started manufacturing JIP-Pipe (high-pressure resistant concrete thrust pipe).

Developed seismic retrofit method for large-diameter existing pipes.

Floaterless method received the

Development of radio towers using pile manufacturing technology awarded the "JSCA Award 2014 Performance Award."

90th anniversary of the company's founding, start of segment business, development of New-STJ-II construction method.

Development of wall parapet for NEXCO

Development of segment joint (FN joint)

Joint development with Tokyo Metropolitan Sewerage Service Co., Ltd. of environmentally friendly material "e-CON®"

Development of HiFBⅡ construction method

Development of next-generation DX construction management system "Pile-ViMSys®"

Establishment of joint venture Confrontia with NJS Co., Ltd.

Transition to the Prime Market following the reorganization of the Tokyo Stock Exchange market

Development of "Wellman Storage Tank®"

Development of synthetic steel pipes (Type 1, Type 2, Type 5, Type 6)

Development of product technology for precast products utilizing artificial intelligence (AI)

Disclosure of climate change-related information in accordance with TCFD recommendations

Certified as "Watershed Flood Control Official Supporter" by the Ministry of Land, Infrastructure, Transport and Tourism

Establishment of a shareholder benefit system (Japan Hume Premium Benefit Club)

"ViMSys Camera®" has obtained certification for reliability verification and small blackboard information function (Ministry of Land, Infrastructure, Transport and Tourism, National Technical Standard No. 10)

Acquisition of shares of Steel Trading Co., Ltd., and making it a consolidated subsidiary