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Design City Japan

EstablishmentJanuary 5, 1979
capital1000Ten thousand
number of employees75
addressOita/Nakatsu-shi/Dai Shinden 440-6
phone0979-24-9742
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last updated:Feb 06, 2026
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Design City Japan Company Profile

50 years of achievements and technical expertise | A professional group specializing in large pressure vessels and steelmaking machinery design.

With 50 years of experience, we are a technical group specializing in the design of large pressure vessels, steelmaking machinery, heat exchangers, and factory piping. We possess extensive achievements and advanced technical skills in the design of large and complex machinery, which is often challenging for typical CAD companies to handle. Utilizing 3D CAD (iCAD SX, SolidWorks, Inventor) and 2D CAD (AutoCAD), we can consistently manage everything from basic design to detailed design, 3D modeling, structural analysis, fluid analysis, and thermal analysis. We have handled numerous projects requiring high specialization, such as pressure vessel design compliant with ASME standards and large equipment design for steel mills and plants. We are ready to tackle high-difficulty projects that other companies may decline, thanks to the experience and expertise of our veteran designers. If you are looking for a design partner, please feel free to consult with us.

Business Activities

Mechanical Design Industry 【Mechanical Design and CAD Design Services】 We provide a wide range of services from basic design to detailed design and production drawing creation, focusing on large pressure vessels, steelmaking machinery, heat exchangers, and factory piping. Utilizing 3D CAD (iCAD SX, SOLIDWORKS, Inventor) and 2D CAD (AutoCAD), we offer optimal designs tailored to our customers' needs. 【Structural Analysis, Fluid Analysis, Thermal Analysis】 We guarantee design quality through advanced simulation techniques such as structural analysis using finite element method, fluid analysis using CFD, and thermal conduction analysis. By verifying performance during the design phase, we support the development of reliable products. 【ASME Standard Compliant Design】 We accommodate pressure vessel designs in compliance with ASME (American Society of Mechanical Engineers) standards and have numerous design achievements for equipment used in plant facilities and chemical plants that require international standards. 【Specialized Support for the Steelmaking and Plant Industry】 With 50 years of experience in designing equipment used in large, high-pressure, and high-temperature environments such as steel mill facilities, petrochemical plants, and power plants, we respond to even the most challenging projects with proven technical expertise.

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Company name Design City Japan
number of employees75
Contact addresspostalcode 871-0001 Oita/ Nakatsu-shi/ Dai Shinden 440-6View on map TEL:0979-24-9742 FAX:0979-24-6648
Industry Service Industry
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