Eight Capabilities. One Trusted Team.
From precision earthworks to certified pipeline fusion — Tri Sector Industries delivers every discipline in-house, on time, and to spec.
We operate a modern fleet and a skilled, safety-certified workforce across South Australia. Every service is backed by strict environmental compliance and clear communication from ground-breaking to final handover.
Bulk Earthworks & Excavating
We deliver major cut-and-fill operations, site clearing, and precision earthworks for commercial and infrastructure projects of any scale. Our modern fleet of excavators and earthmoving equipment ensures your site is prepared to specification, on schedule.
- Site clearing and stripping
- Cut-and-fill operations
- Bulk excavation
- Subgrade preparation
- Spoil removal and management
Civil Reworks
Existing infrastructure doesn't always meet current standards. Our civil reworks team handles professional remediation, modifications, and upgrades — restoring functionality and compliance without disrupting surrounding works.
- Infrastructure remediation
- Pavement and subgrade repair
- Drainage modifications
- Structural upgrades
- Compliance rectification
Drainage & Pipe Laying
From stormwater systems to sewer and utility pipelines, our team installs complete drainage infrastructure to engineered specifications. We work across residential subdivisions, commercial developments, and major infrastructure upgrades.
- Stormwater drainage systems
- Sewer pipeline installation
- Utility pipeline laying
- Pit and headwall construction
- Trench excavation and backfill
Pipe Jacking & Poly Welding
Where open trenching isn't possible, our trenchless pipe jacking capability delivers. We also provide certified HDPE poly welding services — precision pipeline fusion that meets the highest industry standards.
- Trenchless pipe jacking
- HDPE pipeline fusion
- Certified poly welding
- Bore and sleeve installation
- Minimal-disruption pipeline works
Road Base & Concrete Kerbing
Our road base and kerbing teams deliver expert subgrade profiling, base compaction, and durable concrete kerb installation. We work to tight tolerances, ensuring every surface is built to last.
- Subgrade profiling and preparation
- Road base compaction
- Concrete kerb and channel
- Kerb and gutter installation
- Pavement edge restraints
Retaining Walls
We construct high-durability retaining walls built to engineered specifications. Whether it's a small cut or a major structural retention requirement, our team delivers walls that hold — permanently.
- Engineered retaining wall construction
- Concrete block and panel walls
- Timber and steel retaining
- Drainage behind retaining structures
- Geotechnical compliance
Carting & Water Trucks
Efficient material haulage and dedicated dust suppression or compaction support. Our carting and water truck fleet keeps your project moving — whether you need spoil removed, fill delivered, or dust controlled.
- Material haulage and carting
- Dust suppression services
- Compaction water support
- Fill delivery and placement
- Site logistics support
Wet Hire
Clean, compliant equipment alongside certified professionals — ready for your project. Our wet hire service gives you access to our modern fleet with experienced operators, without the overhead of ownership.
- Excavators and earthmovers
- Compaction equipment
- Water trucks
- Graders and dozers
- Certified operators included
Need a Capability Not Listed?
Talk to our team. We take on complex, multi-discipline projects and can tailor a solution to your exact requirements.