HOME | Electric power / electrical equipment | Gas | Water and sewage | District heating and cooling | Steel / non-ferrous metals | Petrochemicals | Transportation equipment | Space development | LINK | Menu Message from the President Management Philosophy Company Profile Corporate history Manufacturing qualification Product information location Ground map E-MAIL Okuda Sokabe Co., Ltd. (abbreviated as OSK) has been on this path since its founding in 1925 as a manufacturer of OSK type bellows type expansion joints . Meanwhile, OSK type bellows type expansion joints are used for nuclear power generation equipment, steelmaking machinery, industrial machinery, piping that is an artery of chemical plants, vibration absorption pipes for rotating machinery, and city gas / water supply (buried / exposed). Part) We are striving to bring together OSK manufacturing technologies and research and development in new fields in response to requests from various customers, such as telescopic flexible pipe joints used for pipelines. ★ Notice of relocation of Osaka office! ★ We have completed the production capacity expansion work at the Nara Factory, and have decided to relocate the Osaka Office, which is currently based in Higashi-Osaka City, to the Nara Factory. Please link the detailed information on the attached sheet for the address, telephone number, etc. to be changed . We are also planning a full-scale replacement work for the current Osaka factory. ≫Detailed information .. .. Latest OSK news information August 28, 2011 "Naha Umisora Tunnel" opened. The world's first immersion box with bellows fittings ! A large metal bellows with a height of 8m and a width of 36m is used for the purpose of absorbing strain during an earthquake and ensuring the safety of lifelines . ≫Detailed information July 2011 Yoshiday Completion of extension and complete renewal work of OSK Nara factory! ≫Detailed information April 27, 2011 Kinki Bureau of Economy, Trade and Industry "31 cases such as business conversion" Nikkan Kogyo Shimbun ≫Detailed information March 30, 2011 Kinki Bureau of Economy, Trade and Industry "Small and medium-sized enterprises working hard for business conversion, etc." Okuda Sokabe Co., Ltd. ≫Detailed information December 22, 2010 Small and Medium Enterprise Agency / Organization for Small & Medium Enterprises and Regional Innovation J-Net21 ★ Opening column ★ "Supporting Japanese industry and life behind the scenes　" ≫Detailed information OSK local construction news July 28, 2011 Gas leak Repair and refurbishment on-site work with a seal bellows for an old telescopic tube (φ3000) ! ≫Detailed information October 1, 2010 Other companies (N, Inc. · D Co., Ltd.) interlayer leakage of product "multilayer bellows expansion pipe" is generated, by the user like early operation resumption of the strong request of, but is usually available to you and will refrain from third-party products, and the reliability of the multilayer bellows On- site construction was carried out to maintain the characteristics . ≫Detailed information OSK Electricity Business Act News January 10, 2013 Welding technology in the power generation equipment business Updated quality certification in the private certification system JIS Z3400 base standard <Welding management process> Detailed information 2009 Decree Amendment This time, on April 1, 2009, the welding company inspection and operation method for thermal power generation equipment was revised, and on May 29, 2009, the welding company inspection interpretation for nuclear power generation equipment was revised. OSK is waiting for your order regarding the safety management examination of expansion joints for piping and expansion joints for containers used for thermal power generation and nuclear power equipment. ≫Detailed information 2005 Welding technology in the power generation equipment business Obtained quality certification under the private product certification system! (Process authentication) Detailed information October 18, 2005 Okuda Sokabe Co., Ltd. has acquired quality certification based on the private product certification standard (thermal power) for bellows type expansion joints for electric facilities of thermal power plants and power generation equipment. The certification is conducted by the Power Generation Equipment Technical Inspection Association (abbreviation: JAPEIC), which is a third-party certification body, and the certification standard acquired is based on JIS Z3400 Annex 3, which is a very high level for a bellows manufacturer. ≫Detailed information For inquiries regarding details, please contact the nearest OSK representative (click). Last updated 2013/02/01 Sales and Technology Headquarters Nara factory Okayama Seaside Factory Copyright: 2004 Okuda Sogabe Co., Ltd All Rights Reserved.