Our Latest News, Views and Opinions

Some informative and useful articles about ductwork, culvert, pile-liners and why quality is so important right through the supply chain.

By Paul Bondsfield • October 12, 2026
A major Australian data centre project highlights how off-site fabrication is becoming a strategic work package in mechanical contracting and construction delivery.
By Paul Bondsfield • September 22, 2026
Discover why early HVAC design decisions, better coordination and off-site manufacturing can reduce rework, improve productivity and help deliver better buildings.
SwiftSteel Pile Liners
By Paul Bondsfield • September 4, 2026
Marine environments are harsh and unforgiving for construction. SwiftSteel pile liners can be the ideal solution combining strength, rigidity & on-site adaptability
Air distribution in Data Centres
By Paul Bondsfield • August 20, 2026
Data Centres are complex buildings so getting HVAC ducting right is critical. Six areas for mechanical contractors and duct manufacturers to be aware of for success.
New Zealand Data Centre - Auckland
By Paul Bondsfield • August 19, 2026
Explore data centre cooling from an airflow and ductwork perspective, with practical considerations for HVAC projects across New Zealand and Australia.
SPIRO Galvanised Steel HVAC Ducting
By Paul Bondsfield • August 12, 2026
Galvanised steel is most common for HVAC ducting because of all-round performance, availability, speed of production, value and adherence to industry standards
By Paul Bondsfield • August 11, 2026
What is the best material for HVAC ducting: galvanised steel, stainless steel or aluminium? It depends on the location, environment and performance requirements
ARLO SPIRO HVAC  Ducting - SMACNA & AS4254 compliant. Photographed end-on
By Paul Bondsfield • August 4, 2026
Learn how AS 4254 and SMACNA standards guide commercial HVAC ductwork manufacture and installation, and why they matter to contractors and specifiers.
Efficient HVAC Installation
By Paul Bondsfield • July 31, 2026
Choose HVAC ducting systems that install faster with less on-site assembly. Learn how commercial ducting solutions improve efficiency, reduce labour costs, and keep HVAC projects on schedule.
By Paul Bondsfield • July 29, 2026
When to use round duct, rectangular duct or oval duct on HVAC projects. The pros and cons of each shape profile
By Paul Bondsfield • July 28, 2026
Discover the best metal HVAC ducting for large buildings and infrastructure projects, comparing quality, flexibility, availability and performance
By Paul Bondsfield • July 22, 2026
Custom steel ducting fabrication is the process of manufacturing HVAC ductwork to the exact dimensions and performance requirements of a commercial building. It improves installation efficiency, supports better airflow, reduces onsite modifications, and helps contractors deliver projects on time and within budget. When commercial HVAC projects demand precise performance, fast installation, and reliable long-term operation, custom steel ducting fabrication becomes one of the most important parts of the mechanical system. Unlike standard off-the-shelf ductwork, custom fabrication produces ducting that is designed and manufactured specifically for a project's building layout, airflow requirements, equipment, and installation sequence. For commercial HVAC installation contractors, this means fewer compromises, fewer site modifications, and greater confidence that the ductwork will fit first time.