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Tri-Steel Specifications

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In an era where most suppliers have gone for the easy option of exclusively purlin-framed buildings, Tri-Steel offer an optional range of heavy duty fabricated , framed steel buildings.

Tri-Steel buildings are stronger, longer lasting and flexible in design. Complementing this is our fully bolted connection plate, purlin framed garages and buildings, giving over 2000 standard configurations.

Tri-Steel sheds come with engineered plans to suit relevant codes with wind and snow loadings for most conditions.

Tri-Steel has extensive in-house facilities and most facets of production from raw steel to finished product are overseen by our own staff. This ensures that a greater degree of accuracy and quality can be achieved and also allows for flexibility in one-off situations.


Tri-Steel seeks to be competitively, and fairly priced at all times, however quality is always reflected in the price. You will appreciate the durability and strength of your product long after you've forgotten the price. A quick call will certainly confirm our position offering 'value for money' quality building systems.

Large Range
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For over 38 years Tri-Steel have been making steel buildings to withstand the worst cyclonic conditions. This experience together with a commitment to leading edge technology and automated manufacturing using only the unmatched quality and strength of only premium grade steel, provides a building that's made to last a lifetime.

Built Tough

your Tri-Steel shed is designed and engineered to meet local authority requirements.

Fast Easy Sheet Fixing

All cladding is fixed with, self tapping tek screws. Fast and strong, each screw seals against weather.

Doors and Windows

You have the choice of sliding, roller, personal and or sliding glass doors - Fixed or sliding windows. You decide where you want them positioned.


Natural even lighting is easy in even the largest shed with heavy duty industrial strength skylights in the roof and/or walls. Fibreglass or polycarbonate.

Gutters and Downpipes

Provide the finishing touch to your Tri-Steel building with a clean smart eave line.

Galvanised Steel Frame

All welded frames of your Tri-Steel fabricated building range are manufactured from high tensile 450MPA steel with a high quality zinc coating to provide long life and strength in all weather conditions.


Tri-Steel offers customers only premium quality cladding to aesthetically enhance their building with a large range of decorative colours. We use only the most reputable suppliers offering the most comprehensive warranty available giving you total peace of mind and satisfaction.

Tri-Steel - Any Size! - Any shape! - Any Where!



Wide Structures 18m wide UB columns

12 metre wide structures Oxley 12m wide

Garaport Structure Standard Balaxland Garaport 6m

Exhibition Structures Orange National Field Days Site

Open face structure Mitchell RHS frame 120 tophat purlins

Rural Shed Blaxland, Wentworth:
Galvanised 'c' portals with fully bolted plates. 64mm tophat purlin

School Structures Special school shelter construction

Heavy Duty Purlins Heavy Duty Oxley RHS frame Z150 Purlins

Three Times Stronger

Three Times Stronger