Spiral Ductwork Manufacturer / Supplier
Streamline airflow, handle high pressures, and maximise durability with custom lock-seam spiral ductwork by Kavanagh Industries.
- 50+ Years Australian Experience
- AS 4254.2 Certified
- Guaranteed On-Time Delivery
- Fully Insured
Let Us Help You Deliver Stronger, Smarter Air Systems
When your project calls for high-volume air movement with uncompromised strength and efficiency, spiral ductwork is a sound solution. Its continuous, tightly joined construction ensures airtight performance while handling high static pressures with ease.
At Kavanagh Industries, we manufacture and supply spiral ductwork and fittings at scale, delivered with the speed, reliability, and expertise trusted by professionals across NSW and Queensland, Australia
What Our Clients Say
Kavanagh Industries has been a valued supplier and partner to our business for many years, consistently delivering high-quality ductwork and prefabricated products. Their commitment to service, reliability and innovation sets them apart in the industry and has contributed to the successful delivery of numerous projects. Their focus on technology, advanced manufacturing and continuous improvement demonstrates a forward-thinking approach that benefits both customers and the broader mechanical services sector. We are pleased to recommend Kavanagh Industries as a trusted, professional and highly capable industry partner.
Kavanagh Industries has been a trusted partner to Crest Air Conditioning for over 30 years, consistently delivering high-quality ductwork and prefabricated solutions. Their commitment to innovation, quality and service, combined with ongoing investment in technology and manufacturing, makes them a leader in the mechanical services industry. Crest is proud to recommend Kavanagh Industries as a reliable, innovative and highly capable partner.
We work with Kavanagh Industries with complete confidence, knowing we can rely on their high-quality products, expert technical advice, and outstanding value for money. Whenever a challenge arises, their team consistently delivers practical and effective solutions.
Their professionalism, knowledge, and dedication set them apart in the industry, and their team is always a pleasure to work with.
Our spiral ducting is built to handle demanding airflow and pressure conditions, making it ideal for commercial and industrial HVAC systems.
- The lock-seam design provides superior strength and sealing, helping maintain consistent airflow and system performance.
Longer continuous lengths mean fewer joins and quicker site work, saving time and reducing labour costs.
The spiral form adds rigidity and strength, with no need for extra reinforcement in most applications.
Spiral ducts reduce turbulence, providing quieter, more efficient airflow.
We fabricate to your specs, including diameter, fittings, and wall thickness. You get ductwork tailored to your project’s requirements.
Our spiral round duct is fabricated to suit a range of specific mechanical or ventilation systems and piping layouts, such as:
- Commercial HVAC Systems
- Supply & Return Air
- Smoke & Garbage Exhaust
- Kitchen & Carpark Exhaust
- Toilet Exhaust
- Make-Up Air Systems
- Clean Rooms
- And more
We manufacture to suit your environment and system demands, with durable materials and pressure classes to match:
Materials:
- Galvanised Steel (Galvabond) – standard on most projects
- Stainless Steel – available on request
Wall Thickness:
- Supplied to suit pressure, structural, and durability requirements
- Thickness can be adjusted for low-, medium-, and high-pressure applications
Pressure Classes:
- Standard: 500 PA
- Custom: Up to 2500 PA
We use tried-and-tested joining methods to ensure long-term strength and functionality:
- Seam-secured spiral ducting construction
- Pittsburgh and Snaplock longitudinal seams
- TDF connectors for secure joins
All ductwork is fabricated in-house using high-precision equipment to ensure quality, consistency, and speed:
- Large-scale spiral duct machines
- Laser and insulation cutters
- Automated duct line systems
- Sheet metal formers and folders
Our combined design and fabrication expertise supports your project from the ground up with detailed planning and modelling:
- 3D modelling and detailed BOMs
- Constructability and value-engineering input
- Project-specific fabrication
We’re equipped to meet demanding project timelines and site requirements:
- In-house logistics fleet with GPS tracking
- 100+ certified lifting cages for safe handling
- 24-hour turnaround for small urgent jobs
- Capacity to run multiple major projects
Every component is purpose-built and rigorously checked to ensure flawless operations:
- Compliant with AS 4254.2
- Multiple quality assurance checkpoints during fabrication
- Fully sealed ductwork for maximum airtightness
- Manufactured to specific requirements, not off-the-shelf
Why Partner with Kavanagh Industries?
- Trusted Expertise: Over 50 years delivering commercial and industrial ductwork
- End-to-End Service: From estimating to delivery, we support your project
- Controlled Delivery: Our logistics fleet ensures on-time arrivals
- Site Efficiency Tools: Lifting cages and logistics systems reduce delays
- Australian-Made: Bluescope steel used across all galvanised ductwork
