IIW-IAB Manufacturers Certification System for metalworking companies



The IIW MCS as a third party certification differentiates from others by:

  • The IIW Manufacturers Certification Scheme was developed for companies certification according to ISO 3834"
  • Using properly registered trained scheme assessors.
  • Implementing an operational structure so that certification will be consistent whenever the scheme rules are applied.


Quality Management System
QMS - ISO 3834

  • In accordance with the document EA-6/02 requirements.
  • IIW definition of specific requirements for the Assessors.
  • Assures the control and optimization of the welding and allied activities.


Benefits for Certified Manufacturers:
  • Clear, high profile, independent verification of compliance by the world's leading authority on Welding.
  • Confirmation of welding and manufacturing capability and staff competence.
  • Improved client confidence leading to a reduction in external audits.
  • Entry of the company's details on well-publicized international Web site register.
  • Quality management and manufacturing capability assessments carried out by IIW recognized assessors.
  • Increased national and international business potencial.
  • Cost savings in production.
  • Facilitates compliance with emerging European and International standards that call up ISO 3834 namely the EU Directives.

Assessment of Manufacturers


Information phase and assessment preparation


Assessment phase


Certification phase


Renewal phase


1 The team of assessors must be:
  • Qualified and experienced in quality system auditing and experienced in welded fabrication
  • EWE/IWE or EWT/IWT with at least 3 years’ experience in welded fabrication and familiarity with quality management systems.
  • After approval, the assessors are registered in the Register of Assessors, according to their quality and engineering profiles and according to the products they


Why is it important to certify your company?
  • Many regulations, standards and specifications are now requiring manufacturers to prove they comply with ISO 3834 (e.g. EN 1090, EN 15085, EN 13445; ISO 17660).
  • Third-party certification isn’t mandatory but it provides a recognizable, credible and efficient way to show compliance.
  • It works as a confirmation of competence for companies’ welding activities.
  • It increases national and international business potential of companies through demonstrated compliance with the welding quality requirements


  • IIW maintains a register of manufacturers that have gained certification under the IIW Manufacturer Certification System.
  • Information contained on the register about companies and their capability is made freely available via IIW. This provides an important sales benefit to registered companies.
  • Details of certified companies are posted on the IIW website (www.iiwelding.org) which has open access and search facilities (see seach area below).


Database of EWF/IIW Certified Companies