Let Us Help You Build from the Ground Up
Subducts and plinth surrounds play a critical role in supporting heavy ductwork, equipment, and access zones, yet they’re often overlooked until installation slows down.
Kavanagh Industries manufactures heavy-gauge subducts and structural plinth surrounds that arrive site-ready, matched to your layout, and compliant with relevant Australian standards.
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.
We fabricate plinth surrounds, 2mm subducts and structural framing up to 10 mm thick, built to handle the weight and vibration of high-capacity duct systems.
Fabricated products are built precisely to your specifications—eliminating headaches and helping you meet project demands.
Supplied fully assembled or in modular format for easier handling and bolting, helping reduce time on-site and improve safety outcomes.
Built to support ductwork in accordance with AS 4254.2 and other applicable Australian standards.
Kavanagh’s plinth surrounds help achieve tidy, organised mechanical plant rooms and riser floors, especially important in healthcare, data centres and commercial settings.
Our structural surrounds are engineered to support key ducting and equipment systems in:
- Commercial & Industrial HVAC Installations
- Equipment Risers & Plant Rooms
- Data Centres
- Healthcare Facilities
- Carparks & Basement Zones
- Mechanical Equipment Pads
- Subduct and Riser Shafts
Built for strength, stability and long-term durability:
Materials:
- Mild Steel
- Galvanised Steel
- Stainless Steel
- Aluminium (on request)
Thickness Range:
- 1.6 mm to 10 mm, depending on load and application
Format:
- Fully Assembled or Modular (Self-Assembly Options)
Kavanagh Industries operates a state-of-the-art sheet metal fabrication facility equipped for high-volume and high-precision manufacturing:
- Cutting: Laser cutting, shearing, insulation cutting, router cutting
- Forming: Sheet metal roll forming, press braking, Vicon full-length straight duct coil line
- Joining: TIG, MIG, spot, and robotic welding, Pittsburgh and Snaplock longitudinal seams, TDF connectors
- Assembly: Subducts, heavy-gauge ductwork (up to 10mm), modular and self-assembly frame systems
- Finishing: Deburring, sealing (fully sealed ductwork for airtight performance)
We specialise in complex geometries, tight tolerances, and reliable, repeatable production for every duct system.
Fabricated using proven metalworking and joining methods to handle structural demands:
- MIG & TIG Welding
- Bolt-Together Systems
- Folded & Pressed Sections
- Reinforced Brackets, Feet & Flanges
State-of-the-art machinery and tools for heavy-duty performance and compliance:
- CNC Profile Cutting
- Folding and Forming
- Assembly and Welding
- Deburring and Sealing
- QA Checks at Every Stage
We assist with constructability and value-engineering input, especially for complex or high-load assemblies:
- Drawings & BOMs for Approval
- Advice on Floor Penetration & Fixing
- Prefabrication to Sequence
- Optional Fast-Track Production
Pre-labelled, packed and timed to align with your construction schedule.
- GPS-Traced Kavanagh Logistics Fleet
- 100+ Certified Lifting Cages
- Bundled for Stage/Zone Delivery
- Short Lead Times on Standard Orders
Our subduct plinth surrounds are built with reliability and compliance in mind.
- Fabricated to Project Specifications
- Quality Checks on All Welds and Fasteners
- Designed to Support AS 4254.2 Installations
- Australian Steel Used Where Applicable
Why Partner with Kavanagh Industries?
- Decades of Expertise: Over 50 years of manufacturing industrial and commercial ductwork systems.
- Full-Service Capability: From design input through to delivery and documentation.
- Site-Smart Logistics: Certified cages, clear labelling, and consistent on-time drops.
- Tough & Compliant Builds: Engineered to handle weight, wear, and building standards.
- Australian-Made Strength: We use Bluescope steel and local fabrication processes.
