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Quality Requirement Levels

There are three quality requirement levels outlined in AS/NZS ISO 3834. These are detailed in Part 2, Part 3 and Part 4 of the standard. You must select the level to which your fabrication activities will be certified.

There is no specific guidance on which Part you must select. However, broadly speaking:

  • Part 2 is relevant for specialist welding fabricators, where the requirements are technically demanding and vary from contract to contract. It also applies when the risk of a failure can cause fatalities.
  • Part 3 is for situations where welding technology and materials used are technically demanding but the variety and range of product types is restricted
  • Part 4 applies when materials, processes, designs and configuration would be simple and repetitive, and the risk related to the failure of a welded component is minimal.

Part 2: Comprehensive Quality Requirements

You may wish to opt for certification to Part 2 if your welding activities are:

  • Highly safety‐critical, where failure likely to result in loss of life, environment risk, and so on
  • High level of manufacturing complexity: challenging materials, complex processes, and so on
  • Wide range of products manufactured involving a variety of different materials and/or processes
  • Broad range of metallurgical problems, such as toughness, corrosion, metallurgical imperfections, fatigue, and so on
  • High significance of manufacturing imperfections related to static or dynamic loading and product performance

You may also wish to opt for certification to part 2 to give you a competitive edge, demonstrating that you have the full control of your welded products production activities.

Part 3: Standard Quality Requirements

You may wish to opt for certification to Part 3 if your welding activities have a:

  • Medium level of safety criticality, where there are significant consequences of failure but these are not threatening loss of life
  • Medium level of manufacturing complexity
  • Limited range of products manufactured
  • Limited range of metallurgical problems
  • Limited significance of manufacturing imperfections on product performance

 Part 4: Basic Quality Requirements

You may wish to opt for certification to Part 4 if your welding activities are:

  • Not safety‐critical
  • No manufacturing complexity; mature and routine processes
  • Simple products manufactured
  • No or very limited metallurgical problems
  • Manufacturing imperfections are insignificant to product performance

Criteria for Quality Requirement Level Selection

ASN/NZS ISO 3834 provides a set of criteria that a manufacturer can use in defining which Part should be applied. These criteria include:

  • Extent and application of safety critical products
  • The complexity of manufacture
  • The range of products fabricated
  • The range of different materials used
  • The extent to which metallurgical problems may occur
  • The extent that fabrication imperfections may affect the product performance

In addition, product standards, regulatory requirements or contracts may specify the particular quality level of ISO 3834 that a fabricator must apply. Where these are absent, the manufacturer should select the Standard Part taking account of the criteria listed above.


How to Get Certified to AS/NZS ISO 3834

Ready to have your organisation certified to AS/NZS ISO 3834? You can:

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How to Get Certified to AS/NZS ISO 3834




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About Us

Weld Australia (formerly the WTIA) represents the welding profession in Australia. Our members are made up of individual welding professionals and companies of all sizes. Our primary goal is to ensure that the Australian welding industry remains both locally and globally competitive, both now and into the future. Weld Australia is the Australian representative member of the International Institute of Welding (IIW).

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Contact Us

Suite G1, Ground Floor
25 Ryde Road
Pymble NSW 2073
+61 2 8748 0100
iso3834@weldaustralia.com.au

About Us

Weld Australia (formerly the WTIA) represents the welding profession in Australia. Our members are made up of individual welding professionals and companies of all sizes. Our primary goal is to ensure that the Australian welding industry remains both locally and globally competitive, both now and into the future. Weld Australia is the Australian representative member of the International Institute of Welding (IIW).

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