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D&H Steel Construction Limited

D&H Steel Construction Ltd
42 Mihini Road, Henderson
Auckland, New Zealand
Ph: 64-9-839 7250

Waikato Steel Fabricators

Custom Welded Beams

Quality Accreditations



Presentation of CertificatesD&H Steel Construction is proud to be the first New Zealand steel fabrication company to be certified by the International Institute of Welding (IIW) for AS/NZS ISO 3834 Part 2 Weld Quality Standard. This certifies D&H Steel's implementation of the internationally recognised Welding Quality Assurance system for steel quality and integrity of the welding process.

D&H Steel Construction has also received Steel Fabrication Certification (SFC) to Construction Category 4 (CC4) which is the highest category covering all types of structural steel work.

The SFC scheme ensures participating steel fabrication companies have the personnel and quality management systems in place to consistently produce quality work. The SFC is based on a modified version of the highly regarded European system and incorporates the requirements of existing standards and AS/NZS ISO 3834. It recognises 4 construction categories allowing engineers to specify a level of quality appropriate for the risk (CC1 low CC4 highest). The SFC aims to reduce compliance risk for procurers and specifiers. Participating fabricators are certified by an independent auditing authority valid for 5 years and annual surveillance audits.

As a SFC accredited fabricator, our clients have the assurance the steel and welding will meet the performance standards required in New Zealand for buildings designed to withstand earthquakes.

  • We have suitably qualified welding personnel to manage, supervise and inspect all aspects of the welding process.
  • We have processes to verify the steel is certified to the required specification and we can trace every steel component back to a material test certificate.
  • We have processes to ensure every weld is performed in accordance with an approved weld procedure (WPS) and we can trace individual welds back to an individual ticketed welder.
  • At the completion of the project we provide a Quality Assurance Manual that includes the project quality assurance plan, inspection and testing plan, material test certificates, fabrication, welding and painting quality control documents and third party testing and site erection signoff documents.


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