SECURE THE FUTURE OF YOUR STEEL FABRICATION BUSINESS WITH WORLD-CLASS CERTIFICATION
Dominate Critical Infrastructure and Export Markets
Position your company as the premium choice for Australia’s most demanding projects. The combined IIW MCS ISO 3834 and AS/NZS 5131 certification isn’t just compliance—it’s your competitive weapon.
Our combined certification saves time, cuts costs, and enhances operational effectiveness, ensuring Australian fabricators meet stringent welding quality and structural steel requirements.
This service is only available to businesses certified to IIW MCS ISO 3834, or those doing a dual certification. AS/NZS 5131 certification is provided as an additional component—not as a stand-alone certification.
Immediate Business Impact
Cut costs while boosting quality. Companies with dual certification experience:
- Reduced welding defects and costly rework
- Fewer non-conformances that derail project timelines
- Enhanced personnel competency that delivers consistent results
- Superior risk management that protects your reputation
Leverage the internationally trusted IIW MCS framework while maintaining complete relevance in Australian markets. This dual approach gives you unmatched credibility with both domestic clients and international partners—opening doors that single-standard competitors simply cannot access.
Streamlined Certification = Real Savings
Slash your certification overhead with our integrated assessment approach:
- Fewer audits disrupting your operations
- Reduced documentation duplication saving administrative time
- Lower long-term certification costs improving your bottom line
- Full audit robustness maintained without compromise
The Quality Signal That Wins Contracts
When clients demand the highest levels of compliance, traceability, and accountability, your dual certification becomes the deciding factor. Stand apart from competitors who can only offer partial solutions. Dual certification delivers dual market access: AS/NZS 5131 for tendering in the Australia’s critical infrastructure sector and IIW MCS ISO 3834 for the global marketplace where international companies demand proven quality standards through IIW certification.
What is IIW MCS ISO 3834 + AS/NZS 5131 Certification?
AS/NZS ISO 3834 Quality requirements for fusion welding of metallic materials specifies the production control requirements expected for fusion welded products globally, whether fabricated on-site or in a workshop. It is the internationally recognised benchmark for welding quality, ensuring efficient, high-quality welding processes.
AS/NZS 5131 Structural steelwork fabrication specifies the structural steelwork fabrication and erection requirements to achieve compliance with the National Construction Code (NCC).
This combined certification service enables companies to demonstrate compliance with both standards in a single process, eliminating the need for separate audits and ensuring adherence to the highest industry benchmarks.
Companies must first be certified to AS/NZS ISO 3834 by Weld Australia before they can obtain AS/NZS 5131 certification. Weld Australia does not offer stand-alone AS/NZS 5131 certification.
Read more about what AS/NZS ISO 3834 certification is here.
View the Weld Australia AS/NZS ISO 3834 (IIW MCS ISO 3834) Certified Companies List.
TECHNICAL GUIDES
Why Choose Weld Australia for Certification?
Weld Australia is the premier independent certification body for welding quality and structural steel compliance. Our expert auditors and assessors provide unparalleled support, ensuring your business achieves certification smoothly and efficiently.
Not only is Weld Australia a highly respected independent third-party, we are the International Institute of Welding (IIW) Authorised Nominated Body for Company Certification (ANBCC). This makes Weld Australia the premier welding certification body in Australia.
Plus, with Weld Australia conducting your certification audits and assessment, you have access to our highly-qualified team of welding experts. Our experts work closely with you to improve your processes and procedures to ensure they’re in-line with all Australian and International Standards requirements, thereby increasing your productivity and profits.
All our assessors are:
- Qualified and experienced in quality system auditing and experienced in welded fabrication
- Either IWE or IWT qualified, with at least three years’ experience in welded fabrication
- Extremely familiar with factory production control systems and quality management systems