Antonius is known as a supplier of high quality products – besides a high degree of reliability in deliveries. Per individual quality code Antonius has highly trained engineers, who can assist clients at an early stage with technical knowledge. Our Quality Assurance System is accredited to ISO 9001 since 1992.

ANTONIUS has the following certifications:

  • ISO-9001:2015 QA system
  • PED 2014/68/EU
  • ASME accreditation for U-stamp and U2 stamp since 1997
  • AD 2000 Merkblatt
  • Norsok M650 Ed.4 (22 Cr Duplex SS, 25 Cr Duplex SS en 6 Mo SS)
  • DIN EN 3834-2


ANTONIUS manufactures in accordance with following design codes:

  • ASME
  • AD 2000 – Merkblatt
  • EN 13445
  • PD5500
  • RToD
  • Australian Standard
  • DNV-GL
  • Lloyd Rules
  • Norsok
  • SELO


AD2000 Merkblatt HP0 / HP 8/1, TRD 202

DIN EN ISO 3834-2

               Directive 2014/68/EU/Annex 1, POINT 3.1

ASME U Stamp

ASME U2 Stamp

ISO 9001:2015

Norsok M-650 Ed.4 (22Cr Duplex SS acc. MDS 43) QTR No. 001


Norsok M-650 Ed.4 (25Cr Super Duplex SS acc. MDS D53) QTR No. 003

Norsok M-650 Ed.4 (25Cr Super Duplex SS acc. MDS D53) QTR No. 006

Rolls Royce certificate of approval