1900-1945 From Founding to the End of WW2
- 1900
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Takichi ISHII founded an iron works shop in the Tsukishima District, Tokyo.
Founder Takichi Ishii - 1919
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ISHII IRON WORKS CO., LTD. was established.
- 1923
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Head office and factory were burned down during the Great Kanto earthquake. After a prompt recovery, operations were restarted in the same year.
Tsukishima office.1926 - 1930
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Construction of 10 large oil tanks (12,000ton) for the North Sakhalin Oil Trust in Union of Soviet Socialist Republics (Russia).
- 1934
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Manufactured the first alumina electrolyzer in Japan.
The first alumina
electrolyzer in Japan - 1937
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The headquarters relocated to Marunouchi-Yurakukan in central Tokyo.
- 1938
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Established the Kamata factory (now the Haneda Office) and acquired a subsidiary, Nihon Kagaku Kikai Co., Ltd., which had its capital cut down to 2 million yen.
- 1938-2
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The headquarters relocated to Mainichikaikan, Yurakucho, which is also central Tokyo.
- 1945
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The end of WW2.
1945-1973 From the End of WW2 to the Oil Crisis
- 1949
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Listed in the First Section of the Tokyo Stock Exchange.
- 1954
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Constructed the largest wet-seal gas holder (175,000m³) in East Asia (at that time).
The largest wet-seal gas
holder in East Asia (at that time). - 1954-2
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Constructed the first spherical tanks in Japan.(9units)
The first manufactured
sphere tanks in Japan. - 1958
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Constructed two units of floating roof tanks (50,000kL) , which was the largest in the world (at that time).
- 1959
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Performed the first experiments in the world on cryogenic brittle fracture using the actual spherical tank.
The first experiments in
the world on cryogenic brittle
fracture using the actual
spherical tank. - 1959-2
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The headquarters relocated to the Sukiyabashi Fuji Building, Ginza, Chuo-ku, Tokyo.
- 1961
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Constructed oil tanks (22,000kL) for the Philippines.(45units)
- 1966
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Constructed the largest stainless steel swimming pool in the world (at that time), which can be converted to an ice-skating rink.
- 1968
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Constructed a hard top floater tank using the groundbreaking helical erection method.(3,000kL)
- 1969
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Constructed the double wall liquid ammonia cryogenic tank.(15,000kL)
- 1971
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Constructed several different swimming pools (5units), including the largest stainless steel swimming pool (changeable to an ice-skating rink) in East Asia.
Constructed the largest
stainless steel swimming pool
(changeable to ice skating rink) in East Asia (at that time).
1973-2000 From the Oil Crisis to our 100th anniversary
- 1975
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Constructed the original dry-type gas holder.(100,000m³)
- 1976
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Constructed a double wall LNG cryogenic tank. (32,000kL)
- 1976-2
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Constructed the largest metal double wall low temperature tank (21,409m³ ethylene and 11,000m³ ethane) in the world (at that time) for Algeria.
- 1977
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Constructed a spherical gas holder for city use. (100,000Nm³)
- 1978
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Constructed the first pre-stressed concrete type (PS-type) cryogenic tank for ethylene in Japan. (6,000kL)
Pre-stressed concrete
type (PS-type) cryogenic tank. - 1979
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The construction of over 120 steel tanks in Iran was interrupted by the Iranian Revolution.
The tanks whose construction was interrupted. - 1981
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Constructed two units of PS-type cryogenic LPG tanks. (80,000kL)
- 1982
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Constructed a gas generator for the city using the ISHII-GWM method.
- 1987
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Constructed a water slide 500m in length, which is the longest in the East Asia. (Adventure Slider (TM)).
- 1988
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Constructed and exported a water park for Taiwan.
- 1988-2
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Started real estate leasing.
- 1989
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Constructed an ethylene cryogenic tank (20,000kL) with a re-liquefaction facility in Taiwan on a full turn-key basis.
- 1992
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IIW ENGINEERING CO., SDN. BHD.was established in Johor Bahru, Malaysia.
- 1995
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Constructed a spherical gas holder for town gas (200,000Nm³), which remains one of the largest in Japan.
The spherical gas holder, one of the largest in Japan. - 1997
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Constructed a LNG satellite system for town gas.
- 1998
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Constructed an LPG import terminal in China including two units of LPG cryogenic tanks (69,000kL) on a full turn-key basis.
Escape from Iran after the Iranian Revolution
We had planed to construct over 120 units of several kinds of tanks for IJPC project in Iran.
However, the construction was interrupted before completion by the Iranian Revolution in 1979.
The story that all employees who engaged in this project escaped with bare life to Japan by various assistance has been handed down.
After 2000 From our 100th anniversary to today
- 2003
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Constructed an LNG vertical cylindrical storage tank (2,200kL), which is one of the largest in Japan.
- 2003-2
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Constructed a DME vertical cylindrical storage tank (800kL), which is one of the largest in Japan.
- 2004
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The headquarters relocated to Tsukishima, Chuo-ku, Tokyo.
- 2004-2
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Constructed a rental apartment "Residence Charmante Tsukishima" in Tsukishima, Chuo-ku, Tokyo.
- 2005
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The longest and tallest water slide we built was recognized by the Guinness World Records 2005.
Longest & tallest water slider in the world(recognized by Guinness World Records 2005) - 2005-2
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Constructed LNG cryogenic tanks (3,000kL) in Japan.
LNG cryogenic tank - 2005-3
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Constructed four units of LPG cryogenic tanks (50,000ton) in Japan.
- 2006
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IIW SINGAPORE PTE.LTD. was established in Singapore.
- 2006-2
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Started real estate leasing at Suncity Ginza EAST Tsukishima, Chuo-ku, Tokyo.
Suncity Ginza EAST - 2008
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Established a branch office in Taiwan.
- 2008-2
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Constructed low-temperature and high-pressure facilities in Malaysia.(Butadiene)
- 2009
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Constructed oil tanks including a floating roof tank in Brunei. (71,000kL)
- 2009-2
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Constructed low-temperature and high pressure facilities in Thailand.(Ethylene, ethane, and propylene)
- 2012
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Constructed a floating roof tank(65,000m³) and conducted tank maintenance for dome roof tanks(6,100m³) in Brunei.
Fixed roof tank with Internal floating roof - 2012-2
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Constructed a PS-type liquid ammonia cryogenic tank in Taiwan. (20,000ton)
- 2013
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Started the solar power generation business in JAPAN.
Solar power generation facility - 2013-2
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Constructed a suppression pool water tank for a nuclear power plant. (4,000m³)
- 2014
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Constructed a PS-type liquid ammonia cryogenic tank in Taiwan. (20,000ton)
- 2014-2
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Established a representative office in Indonesia.
- 2015
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Established a branch office in Brunei.
- 2015-2
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Constructed a wet-seal gas holder in Indonesia. (3,000m³)
- 2016
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Constructed a cryogenic propane tank in Singapore. (42,500ton)
Cryogenic propane tank - 2016-2
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Constructed three units of LNG vertical cylindrical storage tanks for a city gas satellite system.(1,000kL)
- 2019
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Constructed five units of Japan’s first tsunami-resilient concrete tanks. (990kL)
Tsunami-resilient concrete tanks - 2022
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Concluded a business alliance with JFE Engineering Corporation.
- 2023
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Constructed a dual propane-ammonia cryogenic tank which is one of the largest in Japan for a chemical manufacturer. (34,200m³)
Dual propane-ammonia cryogenic tank - 2023-2
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Constructed a PS-type cryogenic ammonia tank in Taiwan. (30,000ton)
- 2024
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Constructed spherical liquefied carbon dioxide tanks for a chemical manufacturer. (1,000m³)
Spherical tanks
for liquefied carbon dioxide - 2024-2
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Delisted from Tokyo Stock Exchange through a management buyout.