Quality Control

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

Management system

  • JIS Q 9001: 2015 / ISO 9001: 2015
  • JIS Q 14001: 2015 / ISO 14001: 2015
  • JIS Q 9100: 2016


  • Nippon Kaiji Kyokai (Class NK)
    Rolled stainless steel
  • Lloyd's Register
    1) Stainless Steel Plates and Strip
    2) Fe-Ni alloys Plates and Strip
  • DNV
    Austenitic Stainless Steel
    1) ModeII (Stainless Steel Products)
    2) Stainless Steel Strips and Plates
  • TÜV Rheinland
    1) AD2000-Merkblatt W0
    Stainless Steel Strip, Plate, Sheet
    2) PED 2014/68/EU Annex I sec. 4.3
    Stainless Steel Strip, Sheet, Plate
    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 Plate, Sheet, Strip/ Coil
    · NORSOK M-630 MDS R15 UNSS31254 Plate, Sheet, Strip/ Coil
    · NORSOK M-630 MDS D55 UNSS32760 Plate

Related Downloads

Our engineering team received the 2002 John Chipman Award from the US Iron and Steel Society.