OTK possesses advanced technology that is highest level in the world. We manufacture a wide variety of steel pipes, contributing to many industrial fields around the world.    
Sakhalin Project
Blue Stream Project
  œOil And Natural Gas Industries@ œStructures
      Oil Refineries        
Offshore Structures (Jackets)
Roppongi Hills
Tokyo Skytree
  œPower Plants œIndustrial Machinery
      Paper Machines    
Thermal Power Plant
Large Scale Power Shovels
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