Industrial fabrication and custom metalwork demand steel that fits first time on Melbourne sites. This guide walks through the full path from initial engineering and shop drawings through to cutting, welding, coatings, transport and site installation, covering the scope, timing and quality checkpoints that keep industrial and commercial programs on track.
The aim is clarity on scope timing and quality so programs stay on track and handover is clean.
What industrial and custom metal fabrication means for Melbourne projects
For industrial fabrication specifically, this often means working to tight tolerances within operating facilities, coordinating shutdowns, staging deliveries, and installing around live plant and equipment.
Custom means built to your drawings and site constraints not adapted from off-the-shelf parts. Typical scopes include structural steel, platforms, stairs & balustrades, mezzanines, sheet metal, stainless and aluminium. Getting hole locations, connection plates and clearances right in drawings eliminates rework on site.
For a detailed walkthrough of how each stage connects from engineering drawings through to coatings and site installation, see our guide on how metal fabrication works in construction.
From drafting to install: the workflow
1. Engineering, drafting & shop drawings
- 2D/3D shop drawings to lock loads, connections and clearances
- Early RFIs to confirm architect/engineer intent
- Clash checks with services and façade lines
- Marked lift paths and hold points for inspections
These steps reduce variations and speed approvals.
2. Cutting, forming and welding (Melbourne workshop)
- Laser for thin plate/tight profiles; plasma for general plate; oxy for heavy sections
- MIG, TIG and stick welding with WPS/PQR and qualified welders
- Jigs/gauges hold tolerances so assemblies bolt up without packing
- Mill certs/heat numbers kept with the job pack for traceability
All fabrication and welding are carried out to Australian Standards.
3. Coatings & finishes for Victorian conditions
- Hot-dip galvanised (AS/NZS 4680) for exposed/coastal sites
- Blast/prime + durable top-coat systems, or powder-coat for architectural work
- Surface prep, cure times and inspections scheduled into the program (AS/NZS 4680 is the key galvanizing standard in AU/NZ.)
4. Trial fit, packing & transport
- Dry-fit for complex nodes and stair flights
- Piece labels, edge protection and planned load order for fast cranage
- Delivery dockets/part lists to speed on-site checks
5. Site installation that keeps programs on track
- SWMS and site inductions confirmed early
- Cranage/rigging coordinated with other trades
- Bolt-up, plumb and torque checks recorded in the handover pack
Standards & certifications you should expect
- AS/NZS 5131 – Fabrication & erection of structural steelwork; introduces Construction Categories and underpins compliance schemes.
- AS 4100 – Steel structures (primary AU design standard; interfaces with fabrication/erection).
- AS/NZS 1554 – Structural steel welding (e.g., 1554.1 for carbon steel; 1554.6 for stainless).
- AS/NZS 4680 – Hot-dip galvanized coatings on fabricated articles.
Cost & lead-time drivers (what typically moves the needle)
Pricing varies with material grade/thickness, part complexity/qty, finish, drafting hours and site factors (access height, night works, crane class). Lead times depend on drawing approval, shop workload, coatings queue and site access. Sharing final drawings, finishing specs and access info early helps fast-track.
Lead times and how to fast-track your Melbourne steel project
For most custom metal fabrication in Melbourne, allow 1-2 weeks for drafting, 1-3 weeks for fabrication, 3-5 days for coatings, and 1-5 days for site installation, depending on scope, finish and site access. You can fast-track by sending complete drawings early, responding to RFIs quickly, confirming finishes upfront, and locking in craneage and access windows. During retail fit-outs or planned shutdowns, we can open priority windows with extended crews and shifts to keep your program on schedule.
How to brief a fabricator & compare quotes fairly
Send current drawings, loads, finishes and site photos. Ask all bidders to include drafting, coatings, delivery, installation, craneage and fixings then compare QA/traceability and lead time as well as price.
Next steps for drafting fabrication and installation
This walkthrough shows how Melbourne projects move from drawings to installed steel with fewer surprises on site. For a practical reference on scope and process see Kelly Steel Steel Fabrication. When you are ready to share drawings or request timing guidance the general site is here Kelly Steel.
FAQs about metal fabrication
What is custom metal fabrication and when do I need it?
Steel is designed and built to site dimensions, loads and connections. It suits work where tolerances and fit are critical such as beams, platforms, stairs and balustrades in Melbourne builds.
How much does fabrication cost in Melbourne?
Costs depend on material grade thickness complexity, finish drafting hours and site factors. Firm pricing follows drawings, a site check and confirmed inclusions.
How long does fabrication and installation take?
Plan one to two weeks for drafting one to three weeks for fabrication, three to five days for coatings and one to five days for installation depending on scope and access.
Do you handle site installation and craneage?
A complete service includes planning access and lifts providing SWMS torque records and a handover pack at completion.
What standards should be followed?
Relevant AS NZS standards for structural steel and welding with welder qualifications WPS and material traceability on record.
