Industries · Commercial Builders · Melbourne
Structural Steel for Commercial Construction Projects.
Trusted by Melbourne's commercial builders, developers and project managers for multi-storey, retail, office, hospitality, childcare and medical centre projects. AS/NZS 5131 CC2 commercial structural steel — supplied, fabricated and installed.
Welded I-Section
800 × 300 mm
Custom welded plate girders for multi-storey transfer beams
Single-Pass Length
13.5 m
Long-span fabrication without joints or splices
Tube / CHS Diameter
900 mm Ø
Laser-cut large-bore columns and architectural tube
Fabrication Category
CC2 — AS/NZS 5131
Standard fabrication category for commercial construction
Multi-Storey Steel Capability
Structural Steel Capacity for Commercial Construction
Three core capabilities drive most Melbourne commercial structural steel scopes — long-span transfers, multi-storey columns, and mezzanine systems. Each handled end-to-end from drawing review to site install.
CAP 01
Long-Span Transfer Beams
Open-plan retail, podium decks, large-clear-span office layouts — UB and welded plate girders sized to engineer's drawings, fabricated without on-site splices.
- UB sectionUp to 610
- Welded plate girdersCustom
- Connection classSP weld
CAP 02
Multi-Storey Columns
Continuous columns for multi-storey commercial structures — same finish, same profile, same fabrication quality from ground to roof.
- UC sectionUp to 310
- Hollow sectionUp to 400 SHS
- Tube columnsUp to 900 Ø
CAP 03
Mezzanine Systems & Portal Frames
Retail mezzanines, warehouse offices, plant platforms — full assemblies shop-fitted and trial-bolted before delivery to minimise site rework.
- Portal spanUp to 30 m
- Mezzanine floorMulti-bay
- Trial-fitPre-dispatch
Steel Section Profiles
Structural Steel Sections for Commercial Buildings
Reference list of structural steel profiles routinely fabricated for Melbourne commercial projects. Supplied with mill certificates and batch traceability for tender and certifier compliance.
Heavy Beams & Columns
- UBUniversal Beams — 150 UB 14 through 610 UB 125
- UCUniversal Columns — 100 UC through 310 UC
- Welded ICustom welded plate girders to 800 × 300
- PFCParallel flange channels 75 → 380
Hollow Sections
- RHSRectangular hollow up to 400 × 300
- SHSSquare hollow up to 400 × 400
- CHSCircular hollow up to 900 mm Ø via laser tube cutter
Plate & Flat Products
- PlateUp to 25 mm thick — base plates, gussets, cleats
- Flat barStiffeners, connection plates, custom bracketry
- AnglesEqual / unequal — bracing and edge supports
Bolting & Connections
- HS BoltsAS/NZS 1252 high-strength structural bolts
- WeldingAS/NZS 1554.1 SP-grade for primary members
- CoatingsHot-dip galv (AS/NZS 4680), two-pack paint, powder coat
Tender Engagement
How We Quote Structural Steel for Commercial Tenders
Four phases from RFP to award. We work alongside your QS, project manager and structural engineer so the steel scope tenders cleanly and integrates cleanly into your overall package.
Phase 01
RFP & Drawings In
Send tender pack with structural drawings, member schedule and tender brief. We confirm scope clarity and flag any drawing gaps before quoting.
Phase 02
Buildability Review
We mark up the drawings for fabrication-friendly modifications and access constraints. Optional site walk with your PM if access or sequencing is complex.
Phase 03
Itemised Tender Response
Line-by-line tender response — material, fabrication, finish, delivery and install. Variations, exclusions and assumptions stated explicitly so your QS can compare like-for-like.
Phase 04
Award & Handover
On award, we lock the price, issue shop drawings to your engineer, and bring our project lead into your weekly project meetings until handover.
Single-Vendor Coordination
End-to-End Structural Steel Supply for Commercial Projects
Most commercial projects fragment the steel scope across a supplier, a fabricator, a finisher, an erector and a transporter. We collapse that into one project lead — for your PM, for your engineer, for your certifier.
The Steel Chain — One Lead
Why head contractors prefer it this way
On a typical commercial steel scope, head contractors typically coordinate 4–5 separate suppliers — shop detailer, raw material merchant, fabricator, finisher and erector. Every handover is a chance for finger-pointing when something goes wrong.
Single-point steel scope means one project lead carries the whole package. Your PM calls one number. Your engineer emails one drafter. Your certifier collects compliance docs from one source. If a beam arrives incorrectly, there's no "the fabricator says it's the merchant's fault" — there's a single line of responsibility back to us.
This also makes BIM coordination cleaner. The steel scope updates in one model, not three.
Standards & Compliance
AS/NZS 5131 CC2 Structural Steel Fabrication
Commercial structural steel packages built to AS/NZS 5131 Construction Category 2 by default. Welding under AS/NZS 1554.1, finishing to AS/NZS 4680. Documentation set sized for commercial certifier expectations.
Australian Standards We Work To
- AS/NZS 5131 — Fabrication construction categories (CC2 default)
- AS/NZS 1554.1 — Structural steel welding (SP grade)
- AS 4100 — Steel structures (engineer-side reference)
- AS/NZS 1252 — High-strength structural bolts
- AS/NZS 4680 — Hot-dip galvanising
Commercial Documentation Pack
- Stamped shop drawings for engineer sign-off
- Mill certificates & batch traceability
- Welder qualification records (AS/NZS 1554)
- Weld inspection reports — visual + NDT where specified
- Galvanising certificates & coating thickness reports
- QA hold-point sign-offs (drilling, welding, finishing)
Recent Work
Recent Commercial Construction Steel Projects
A snapshot of recent large-scale and commercial-grade steel packages across Melbourne — multi-storey framing, prestige residential at commercial scale, and design-led builds.
Tender-Ready Commercial Structural Steel Quotes
Send your tender pack, structural drawings or member schedule — we'll respond with a line-itemised tender response, exclusions stated, ready for your QS to compare against the package.