Quality certified welding services


Welding quality you can trust

Quality certified welding is essential to prevent welding failure or fabrication defects. Don’t risk project safety or downtime. Knox Engineering is certified to AS/NZS ISO 3834 Part 2 - the highest international standard for welding quality.

Our skilled workmen and rigorous control processes ensure the consistent quality, strength and durability of every weld. When weld quality is critical, you can rely on Knox Engineering.


The ISO 3834.2 standard is the most demanding certification of welding quality available in Australia. Knox Engineering meets all requirements, including:

  • Hiring qualified welding staff
  • Inspection & testing plans
  • Weld quality testing by NATA
  • Traceability documentation
  • Ongoing skill training
  • Quality systems meeting ISO 9001
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Advantages of ISO 3834.2 certified welding

Not all welding services are equal. Unlike other engineering fabrications, all Knox welding is certified to AS/NZS ISO 3834 Part 2. This extra level of quality assurance provides peace of mind and helps reduce safety hazards for our customers.

Quality certified welding is critical for industries such as construction, manufacturing, mining, oil and gas, where weld quality is essential for safety and performance.

Alternatively, you may have experienced the high costs of rectification and rework. You may wish to avoid the headache and added costs. Finding a fabrication partner that can deliver quality, the first time, and every time, is the best way to achieve this.


Knox AS/NZS ISO 3834-2 certified welding comparison table

A reputation for quality

Choosing Knox Engineering means partnering with a trusted, certified, Australian-based fabricator. We can deliver exceptional quality, compliance and reliability. In turn reducing the risk of fabrication defects, and ensuring the best results for your project.

Delivered direct to site

All certified welding services are carried out in our Sydney factory. Completed projects can be delivered directly to your site in NSW and the ACT, or shipped anywhere across Australia.

Our commitment to precision and reliability ensures your metalwork arrives free from defects.

Discuss your certified welding project

Don’t risk your weld quality with anyone else. Trust Knox to deliver welding and fabrication, with quality certified to AS/NZS ISO 3834 Part 2. Contact us today.
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Why choose us?

Knox Engineering are Sydney's premier metal fabricators, renowned for detail and precision, backed by a reputation forged over decades.

Quality

Precision metal fabrication with strict quality control.

Experience

Our name has been trusted for more than 60 years.

Speed

Efficient and streamlined, we always deliver on time.

Scale

We have capacity to handle any project big or small.