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Osaka Rasenkan Kogyo Co., Ltd., Japan’s first flexible hose and bellows manufacturer, has grown as technology has progressed in its 100 years of providing high-quality products since its founding in 1912.
We have developed products that may not be immediately noticed but affect a wide variety of basic industries. These include steel, shipbuilding, petrochemicals, gas and water and electrical power, building involving residential gas and water, high-tech industries related to semiconductor manufacturing, superconductors, ultracold applications, nuclear energy and space development, and life-support industries such as medical devices and disaster prevention equipment.
With pride in our years as a basic technology provider, We have been building up its existing techniques, studying and developing new products and opening up new fields based on reliability, innovative ideas, and creative advanced facilities.
Our greatest pleasure is in helping you be all you can to yourself and to your clients. We have confidence in bolstering our relationship and your continued patronage is appreciated.

Company Overview

Name of company
Osaka Rasenkan Kogyo Co.,Ltd.
Directorate president
Seiji Koizumi
Inauguration of business
March,1912
Establishment of company
December,1937
Capital
80 million yen
Location of head office,sales office and plants
Head office and OSAKA plant
  • 3-12-33,Himesato ,Nishi-yodogawa-ku,Osaka 555-0025, Japan
  • 【TEL】+81-6-6473-6151+81-6-6473-6151
  • 【FAX】+81-6-6473-6150
TOKYO sales office
  • Gotenyama Trust Tower 3F, 4-7-35 Kitashinagawa,Shinagawa-ku,Tokyo,140-0001,Japan
  • 【TEL】+81-3-5423-2600+81-3-5423-2600
  • 【FAX】+81-3-5423-2611
KYUSHU sales office
  • 2-12-12-7F-C,Hakataekimae, Fukuoka Hakata-ku,Fukuoka,812-0011,Japan
  • 【TEL】+81-92-452-6611+81-92-452-6611
  • 【FAX】+81-92-452-6677
TOHOKU sales office
  • 1-11-14-6F Honmachi, Aoba-ku, Sendai, Miyagi,980-0014,Japan
  • 【TEL】+81-22-399-7027+81-22-399-7027
  • 【FAX】+81-22-399-7028
FUKUROI plant
  • 1700,Oyama,Fukuroi-city,Shizuoka 437-0056, Japan
  • 【TEL】+81-538-42-4103>+81-538-42-4103
  • 【FAX】+81-538-42-0628
Product line
  • Flexible hoses
  • Expansion joints (bellows)
  • Vibration absobers
  • Flexible hoses conforming to Fire Service Act
  • Teflon hoses
  • Joint pipes
  • Helical pipes
Approval and certification
  • Fire protection Equipment and Safety Center of Japan (FESC)
  • Nippon Kaiji Kyokai (NK)
  • American Bureau Of Shipping (ABS)
  • Lloyd’s Register of Shipping (LR)
  • Bureau Veritas (BV)
  • Registro Italiano Navale (RINA)
  • China Corporation Register of Shipping (CR)
  • DNV (DNV)
  • China Classification Society (CCS)
  • Korean Register of Shipping (KR)
Acquired Certification
  • ISO9001 (JQA)
  • ISO14001 (JQA)
  • JISQ9100 (AEROSPACE　GROUP)
Member of Association
  • Japan Vacuum Industrial Association (JVIA)
  • The Society of Piping Engineers
  • Semiconductor Equipment Association of Japan(SEAJ)

Company History

Mar.1912
Succeeded in domestically producing metallic flexible hoses and inauguated production and sales at Minami-dori 5-chome,Shin-machi,Nishi-ku,Osaka.
Dec.1937
Established a company organization with capital of 300,000yen.
Jan.1938
Produced 80 percent of fuel hoses and electric conduits for military and naval aircrafts.
Apr.1948
Relocated the head office at the present address and unified all the Plant.
Dec.1965
The capital was increased to 20 million yen.
Jun.1967
The capital was doubled to 40 million yen accepting a capital increase from the Osaka Small Business Investment Co.,Ltd.
Nov.1968
The then president Koizumi recceived an Academy Prize from International American Scientific Association.
Jan.1969
Had a technical tie-up with Vulcan Australia Limited, and succeeded in domestic production of SIDEWINDER ducts.
Nov.1969
Started construction of Fukuroi First Plant.
Mar.1972
Started construction of Fukuroi Second Plant.
May.1978
Became an authorized factory of American Gas Association.
Dec.1980
Successfully Developed a highly flexible, ultra thin hose [Superfree]
Aug.1982
At the head of the flexible hose industry, acquired type certification from the Japan Fire Protection Equipment and Safety center for products conforming to the Fire Service Act.
Jan.1984
Developed the flexible hose and bellows for piping of vacuum aparatus.
Mar.1986
Developed flexible hose [Hybridflex] and bellows [Hybrid bellows] consisting of metallic and Teflon components.
Jul.1989
Developed [Megaflex®] a flexible hose with inner surface polished, and placed it on the market.
Sep.1990
Developed formed bellows [Pressup® bellows] having the same sectional shape as welded bellows and high flexibility.
Feb.1991
Succeeded in automatic brazing system for flexible hose by using welding robot.
Sep.1991
Developed flexible hose [Hasty-22] using HASTELLOY C-22.
Jun.1992
Completion of No.3 Fukuroi Plant. Achieved a mass production system for large size and long bellows.
Nov.1992
Celebrated the company’s 80th anniversary
Sep.1996
Developed [New Megaflex®], provided with inner surface polished and vacuum double-melted materials at both pipe end fittings.
Mar.1998
The Capital was increased to 80 million yen.
Apr.1998
ORK Fukuroi plant (Shizuoka) acquired certification of ISO 9002 quality system.
Jun.1998
Clean-room completed at Fukuroi plant.
Jan.2000
Developed earthquake-proof piping system[Dodge3 Joint®]
Apr.2001
Developed 「3A Super Mini Flex」, the world’s smallest flexible hose.(those days)
May.2003
ORK comprehensively acquired certification of ISO 9001.
Fukuroi plant acquired certification of ISO 14001.
Jul.2003
[Dodge3 Joint®] acquired type certificate of Fire protection Equipment and Safety Center of Japan (FESC)
Apr.2005
ORK comprehensively acquired certification of ISO 14001.
Sep.2007
Started construction of the Second plant at the Head office, and completed clean rooms.
Dec.2008
Implemented Fukuroi Plant with a vacuum heat-treating furnace.
Feb.2012
Developed [Clear Flow Flex®], turbulence suppressive low-vibration flexible hose.
Feb.2014
Developed [Worm Free Flex®], ultra flexible and long service life flexible hose.
Nov.2016
Begun operation of two types of FCV (Fuel Cell Vehicle) at Osaka head offi ce and Tokyo sales office.
Oct.2017
Developed low reaction force, long service life, new type formed bellows [Light Free Bellows™].
Nov.2018
Acquired certificate of JISQ9100, aviation・space Gr.
Mar.2019
Developed 「Micro Mini Flex」, the world’s smallest flexible hose.
May.2019
Opened Kyushu sales office in Fukuoka
Jan.2021
Built new head office 1st factory.
May.2021
Opened Tohoku sales office in Sendai.
Aug.2021
Relocated head office functions to head office 2nd factory.
Mar.2022
Celebrated our 110th anniversary.
Aug.2022
Completed head office and head office factory.
Nov.2023
Celebrated our 111th anniversary.

Access

The Head Office and Osaka Plant

The Head Office and Osaka Plant
  • 3-12-33, Himesato, Nishiyodogawa-ku Osaka-shi, Osaka, 555-0025, Japan
  • 【TEL】+81-6-6473-6151+81-6-6473-6151
  • 【FAX】+81-6-6473-6150
Google Map

Tokyo Sales Office

  • Gotenyama Trust Tower 3F, 4-7-35 Kitashinagawa, Shinagawa-ku, Tokyo, 140-0001, Japan
  • 【TEL】+81-3-5423-2600+81-3-5423-2600
  • 【FAX】+81-3-5423-2611
Google Map

Kyushu Sales Office

  • 2-12-12-7F-C,Hakataekimae, Fukuoka Hakata-ku,Fukuoka,812-0011,Japan
  • 【TEL】+81-92-452-6611+81-92-452-6611
  • 【FAX】+81-92-452-6677
Google Map

TOHOKU sales office

  • 1-11-14-6F Honmachi, Aoba-ku, Sendai, Miyagi,980-0014,Japan
  • 【TEL】+81-22-399-7027+81-22-399-7027
  • 【FAX】+81-22-399-7028
Google Map

Fukuroi Plant

Fukuroi Plant
  • 1700, Oyama, Fukuroi-shi, Shizuoka 437-0056, Japan
  • 【TEL】+81-538-42-4103+81-538-42-4103
  • 【FAX】+81-538-42-0628
Google Map