ASME U3 certification stamp obtained



Mitsubishi Nagasaki Machinery Co., Ltd., a subsidiary, has already obtained ASME stamps (S, U, and U2) (*) for pressure vessels. In September 2021, we additionally obtained certification under U3 stamp inspection (excluding spraying, soldering, or spraying). This certification allows the production of extra-high-pressure vessels of about 70 MPa or more. Some 50 companies worldwide have achieved this certification. Of these, only three operate in Japan, including Mitsubishi Nagasaki Machinery.

The certification is expected to promote the superior quality of Mitsubishi Nagasaki Machinery and help expand its business.

  • *ASME: American Society of Mechanical Engineers
    Stamp (S, U, and U2, U3): Standard defined by ASME
ASME-U3 certificate

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