Company Profile
| Company name | Jonan Steel Corporation |
|---|---|
| President & CEO | Representative President Takashi Sawa |
| Capital | ￥100,000,000 |
| Date established | March 1955 |
| Main client |
HANWA CO.,LTD. Marubeni-Itochu Steel Inc. NIPPON STEEL TRADING CORPORATION JFE Shoji Trade Corporation Metal One Corporation SHIBAMOTO & CO.,LTD. |
History
-
1955
March
Kenji Kakihara, the founder of this company, established Jonan Steel Shokai in Omori-kita, Ota-ku, Tokyo, to sell steel materials as a private management company.
-
1967
December
Jonan Steel Mill Corporation purchased land at 5-13-35 Ryoke, Kawaguchi city, and started to construct a new rolling plant as a first phase of new mill constraction.
-
1969
November
The company built a steel making plant as the second phase of the construction. This plant started production with a 20-ton electric furnace. The continuous production system from the steel-making process to the rolling process started. Capital was increased to ¥48 million with investment by Tokyo Small and Medium Business Investment & Consultation Co.,Ltd.
-
1971
November
Authorized to use Japan Industrial Standard (JIS) Mark indication for reinforcing bar steel.
-
1972
June
Continuous casting machine was installed.
-
1973
August
The 20-ton electric furnace in the steel-making plant was replaced by a 40-ton electric furnace. Rationalization of the rolling line was done, which capabled 15,000 tons of production per month.
-
1982
December
The steel making mill and the rolling mill achieved 25,000 tons production per month.
-
1988
November
Rolling line and accuracy adjustment line were replaced by new lines. Both the steel-making mill and the rolling mill established 40,000-ton production systems.
-
1989
September
The continuous casting machine in the steel-making plant was replaced by a new machine.
-
1994
January
The finishing rolling machine in the rolling plant was replaced by a block mill.
-
1997
January
The oxygen generator was replaced by a new one. The intermediate mill in the rolling plant was replaced by a block mill.
-
1999
December
ISO 9002:1994 certified and registered.
-
2001
March
The Purchasing Department purchased a iron scrap radioactive ray detection monitor.
-
2004
December
The motors of the building dust collectors were changed to inverter-controlled motors to achieve energy saving.
-
2005
May
The motors of the direct-suction dust collectors were changed to inverter-controlled motors to achieve energy saving.
-
2009
April
Authorized to use Korean Industrial Standards (KS) for reinforcing bar steel. （KS D 3504）
-
2010
January
Cooling bed and maintenance facility was renewed.
-
2011
June
ISO 14001:2004 certified and registered.
-
2012
January
Tempcore facility was installed.
-
2012
June
Separately excited type flicker compensating device was replaced, and self-exciting type flicker compensating device was additionally installed.
-
2014
January
Transformer for electric furnance was replaced by a new machine. Continous casting machine was replaced by a new one.
-
2014
February
OHSAS 18001:2007 certified and registered.
-
2015
January
Ladle preheating/drying equipment was replaced by a new one. Product cutting machine was replaced by a new machine.
-
2016
January
Inverter equipment for rolling mill motors were renewed.
-
2017
January
Rolling plant, slit roll reduction ratio updated.
-
2018
July
ISO 14001:2015 certified and registered.
-
2018
October
Electrode regulating control system was replaced.
-
2018
November
ISO 9001:2015 certified and registered.
-
2019
January
Cojet gas injection system was installed.
-
2019
March
New company office completed.
-
2020
January
Liquid oxygen equipment was installed.
-
2020
March
ISO45001 certified and registered.
-
2020
May
The oxygen generator was replaced by a new one.
-
2020
October
Billet straightening device was installed.
-
2024
February
Defects detector was installed.
Work environment
Head Office
Head office completed in March 2019
Factory
We have a solid foundation as a manufacturer specializing in steel bars, with our headquarters and multiple warehouses in the Kanto region, a major consumer area, as well as factories equipped with cutting-edge equipment.
Company Profile
TM332-0004 11-13, 5-chome, Ryoke, Kawaguchicity, Saitama Prefecture
TEL.048(223)3116
FAX.048(224)7607
■ By public transportation
【By taxi】
Take a taxi from the east exit of Kawaguchi Station
on the JR Keihin-Tohoku line (about 15 minutes).
【By bus】
Take Kokusai Kogyo Bus, Kawa 21. which departs from the east exit of JR Kawaguchi Station. On the
Shikahama-Ryoke route, which goes around Ryoke factory town first, get of at 'Enokibashi' bus stop. from
which it's 5 minutes no foot. If the bus goes around Ryoke 2-chome first, get off at "Sanno-bashi-giwa. from
which it's 7 minutes on foot
Take Kokusai Kogyo Bus. Aka 23 route, departing from the east exit of JR Akabane Station for Nishi-Arai
Station via Arakawa Ohashi, get off at "Enokibashi" bus stop, from which it's 5 minutes on foot.
