• Case Study
  • Reference case details

Buildings

Steel pipes used for the large building structures such as some famous towers and buildings in Japan are made by the Osaka Tokushu Kokan Mfg. Co., Ltd.’s original manufacturing method, which cannot be imitated by other manufacturers.

  • Tokyo Sky Tree

  • Tokyo Sky Tree is the tallest radio tower in Japan with the height of 634 m above ground (transmission place). She was completed in May 2012 with the best technology of the companies involved in her construction. Of course, O.T.K is one of them.

    Address 1-1-2 Oshiage, Sumida City, Tokyo 131-0045 Japan
    Ground height 634m
    Number of floors 160 floors above ground (2nd observation deck)
    Completed May 22, 2012
    Developer Tobu Railway, Tobu Tower Sky Tree
    Architect &
    Construction Management    		 Nikken Sekkei
    Main Contractor Obayashi

  • Ashiya Bay Court Club Hotel & Resort

  • The exclusive resort hotel “Ashiya Bay Court Club Hotel & Spa Resort” has been opened in Ashiya-shi, Hyogo. O.T.K.’s huge special steel pipes are adopted for the main pillars of the huge hotel building.

    Site area 2,720,786㎡
    Building area 1,165,451㎡
    Total floor area 4,645,101㎡
    Structural scale Steel reinforced concrete, partially steel, 10 floors above ground
    Total operating expenses 31.3 billion yen
    Architect &
    Construction Management    		 Nikken Sekkei Co., Ltd.
    Main Contractor Kajima Corporation

Industrial Machinery

Various types of uses are also required for industrial machines. O.T.K.’s technology is also applied for rolled steel pipes used in the delicate structure of paper machines, as well as winding drums of cranes and large hydraulic cylinders of excavators.

  • Large excavator

  • The arms of the ultra-large excavators which are active in mining sites require complex and high-precision movement, and the hydraulic cylinders used there need robustness and high accuracy. Here is where our reliable manufacturing technology is applied.

  • Winding drum

  • Drums are also used for hoisting machines and cranes. The tube of the drum, which can be said to be the heart, is not only robust but also must be rounded completely since the wire rope could be wound accurately with uniform tension. Our know-hows are utilized for such products.

    ・Produces high precision, high quality drum tubes
    ・Supports various inspection standards
    ・Provides perfect support organization and quality control
    ・Provides flexible responses on price and delivery

Power plant

Thermal power plants and nuclear power plants need a variety of uses for safety, ranging from various special pipes and piping for power generation. We manufacture products that are suitable to support special materials by utilizing our know-hows which we have cultivated and fitting to perticular uses.

  • Thermal power plant

  • 〔Kawasaki Thermal Power Station〕
    Main specifications Maximum output 3.24 million kW
    Maximum design
    thermal efficiency    		 60.8％
    Power generation type MACCII 1600 ° C class combined cycle power generation
    Fuel LNG
    Our products We have delivered approximately 60 tons of fuel gas piping for No. 2 series

Oil and natural gas industries

Oil and gas are eternal energy resources for humans. Facilities for these resources are made up of various pipes, but each plant requires individual maximum safety accuracy. Here we have the renowned steel pipe technology of O.T.K. which is active all over the world.

  • Oil refineries

  • Petroleum products are indispensable in today’s world. Our products are also used in the pipes for both gas and fluids in the refining plants that produce petroleum products.

  • Oil platforms

  • Line pipes which extend from the platform to the seabed need special steel pipes in the jacket to prevent underwater blowout accidents. In addition, we meet the demands of high dimensional accuracy and high strength tube.