Quality Management

By challenging the limits of technology, we continually deliver stainless steel and high-performance alloys that genuinely satisfy our customers.
We have made it our mission to help build a creative society through our products. To this end, we are endeavoring to boost our product quality even further by establishing and standardizing production technologies and verification technologies that address the needs of our customers.
One result of our dedication has been the recognition of our robust quality assurance system, evidenced by our JIS certification, ISO 9001, and certifications from other classification organizations for the Kawasaki Plant and our production base as well as certification (Pressure Equipment Directive (PED) AD-2000) of our materials for used in pressure vessels.


Japanese Industrial Standard Certifications

  • JIS G 4304 Hot-rolled stainless steel plates and strips
  • JIS G 4305 Cold-rolled stainless steel plates and strips
  • JIS G 4312 Heat-resistant steel plates and strips


  • JIS Q 9001: 2015 / ISO 9001: 2015
  • JIS Q 14001: 2015 / ISO 14001: 2015


  • Nippon Kaiji Kyokai (Class NK)
    Rolled stainless steel plates and sheets
  • Lloyd's Register
    1) Stainless Steel Plates and Strip
    2) Fe-Ni alloys Plates and Strip
  • DNV·GL
    Austenitic Stainless Steel and Fe-36Ni
    1) ModeII (Stainless Steel Products & Special Alloy Products)
    2) Stainless Steel Strips and Plates
    3) Special Alloy Strips, Sheets and Plates(Fe-36%Ni)
  • TÜV Rheinland
    1) AD2000-Merkblatt W0 / TRD100
    Stainless Steel Strip, Plate, Sheet, Forging and Bar
    2) PED 97/23/EC Annex1.4.3
    Stainless Steel Strip, Sheet, Plate, Forging and Bar
    Nickel and Nickel Alloy Strip, Sheet and Plate
  • NORSOK M-650
    · NORSOK M-630 MDS D45 UNSS31803 UNSS32205 Plate, Sheet, Strip/ Coil
    · NORSOK M-630 MDS D55 UNSS32750 UNSS32760 Plate, Sheet, Strip/ Coil
    · NORSOK M-630 MDS R15 UNSS31254 Plate, Sheet, Strip/ Coil

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