ISO 3834 – Welding

A3CERT is your complete supplier of certification against ISO 3834-2, -3 & -4. ISO 3834 is also a subset to be certified against EN 1090-1 (Requirements for conformity assessment for structural components – steel and aluminium) that replaces previous building regulations in Sweden.

ISO 3834 series deals with Quality requirements for fusion welding of metallic materials.

Part 1: Criteria for the selection of the appropriate level of quality requirements
Part 2: Comprehensive Quality requirements
Part 3:Normal Quality Requirements
Part 4:Elementary Quality Requirements


A3CERT is the only Swedish body that – under accreditation in Sweden – offer certification services against ISO 9001, ISO 14001, ISO 45001,
EN 1090-1, ISO 3834, EN 15085-2 and approved by ERA – European Railway Agency for all parts of ECM – Entities in Charge of Maintenance.
Contact us to find out more or make a quote request.

Former CEO Leif Strand and current CEO Evert Larsson were already present at the first certification in Sweden in 1997 against EN 729-2.
We have a lot of very competent welding experts in our audit teams.

We certify against all types of welding nuclear-related, pressure vessel manufacturers, construction steels and welded industrial products.

A3CERT is the certification body with the longest experience in Sweden of ISO 3834 and its predecessor EN 729 and our accreditation has no limitations. Today we have certified over 300 companies against ISO 3834.

Scope of our accreditation

You can read via SWEDAC’s accreditation register which type of industries we are currently accredited for.

Do not hesitate to contact us even if your type of business is not in the list , as we we often take decisions to expand our accreditation with additional industry areas.

Do you need assistance with certification?

With A3CERT, certification becomes simple and profitable. When you contact us, you always get answers to your questions. We offer competent and efficient assistance with certification, regardless of the industry, type of business and where in the certification cycle you are right now.
Contact us for quotation and more information.