Trying to budget custom steel work for 2026? This guide explains price per kg and price per metre, what drives fabrication pricing, typical workshop rates, welding cost, finishing, delivery and install plus quick notes for Sydney, Melbourne, Brisbane, Perth, Adelaide and Canberra. Use the tables and checklists to brief suppliers and get fast, apples-to-apples quotes.
How Custom Steel Pricing Works
Most quotes combine materials + processing + finishing + delivery/install “Per kg” is common for mixed or heavy assemblies; “per metre” suits standard sections and repeat lengths.
All figures below should be treated as “from” and illustrative. Replace with your current supplier rates when publishing.
| Cost lens | When it’s used | What it includes by default | What adds cost quickly |
| Price per kg | Platework, heavy sections, mixed weldments | Material weight × rate, basic prep | Tight tolerances, complex fit-ups, extra weld hours, QA/NDT |
| Price per metre | SHS/CHS, angle, flat bar, stair stringers | Section length × rate, straight cuts | Mitres, coping/notching, drilling, jigs, curved work |
| Hourly workshop rate | Custom jobs, repair, site works | Welder/fabricator time, basic consumables | Specialty procedures (TIG on stainless), position welds, overtime |
| Finishing add-ons | Outdoor or architectural jobs | Basic clean | Powder coating, hot-dip galvanising, blasting, zinc prime |
| Delivery and install | Off-site to site | Standard delivery | Cranage, difficult access, inductions, permits, after-hours |
What drives the cost of custom steel work
Material choice and thickness
- Mild steel (common for structural/architectural) is most cost-effective.
- Stainless (304/316) and aluminium (5052/6061) lift price due to material and process time.
- Thicker sections increase kg/m, transport, and handling costs.
Cutting and processing
- Laser gives tight tolerances and clean edges; plasma is efficient on thicker plate; saw is cheapest for straight cuts.
- Setup time (nesting, programming) spreads better over batch runs.
Labour and workshop rates
- Quoted as $ per hour for welding/fabrication, with premiums for stainless TIG, overhead positions, and complex jigs/fixtures.
- Rework from vague drawings is the fastest way to blow the budget.
Finishing
- Powder coating: great for inland/architectural work; charged per item or per m² including prep.
- Hot-dip galvanising: best for coastal/corrosive zones; charged by mass/size; allow for holes/venting and post-gal touch-ups.
Tolerances and QA
- Tight tolerances, AS/NZS compliance, WPS/PQR, and NDT (MPI/UT) add time but reduce risk later.
Delivery and install
- Access (stairs, lifts), cranage, permits/inductions, and live-site rules extend install windows.
- Regional jobs need travel and accommodation allowances.
Per kg vs per metre made simple
| Use case | Choose “per kg” when | Choose “per metre” when | Tip |
| Mixed assemblies | Different plates/sections, lots of welding | Standard sections, repeatable lengths | Ask for both where possible, then compare totals |
| Heavy sections | Weight dominates cost | N/A | Provide grade and mill spec up front |
| Simple runs | N/A | Straight cuts on SHS/CHS, angle, flat bar | Batch lengths to reduce offcuts and setup |
Conversion cheat-sheet
- Weight = Density × Volume; for sections, fabricators use standard kg/m tables.
- Example: 50×50×3 SHS ≈ 5.4 kg/m (publish with your supplier’s table).
- Converting: Per-m price × length → total; or kg/m × length × per-kg price → total.
For each: materials + labour + finishing + delivery/install = total. Ask for two quotes supply-only and supply-and-install.
Steel Work Costs by City and Region
| City/Region | What to expect | Cost sensitivity |
| Sydney | Higher workshop labour and install; traffic affects delivery windows | Install time, access permits |
| Melbourne | Competitive for batch/volume; inner-city delivery constraints | Parking, after-hours loading |
| Brisbane | Strong coating capacity; summer storms can affect lead times | Weather buffers, site delays |
| Perth | Freight for specialty materials; coastal corrosion planning | Finishing choice, fasteners |
| Adelaide | Good value on small-batch jobs; reliable local galvanising | Turnaround vs batching |
| Canberra | Architectural finish expectations; thermal performance focus | Powder coat quality, QA |
| Gold Coast / Sunshine Coast | Salt-safe finishes and wind ratings matter | Stainless grade, galvanising |
| Newcastle / Geelong / Tasmania | Regional logistics; timber/steel hybrid design common | Delivery, accommodation |
How to get an accurate custom steel quote
Send proper files
- DWG/DXF/STEP with clear dimensions, thickness, grade, quantity and bend notes.
- Mark tolerances, hole sizes, and any site measure required.
Specify finishing and environment
- Powder coat: colour, gloss, micron; required prep/blast class.
- Hot-dip galvanising: vent holes, post-gal dressing, any duplex coat.
Clarify delivery and install
- Site address, access, floor level, cranage, induction/permits, working hours.
Ask for two prices
- Supply-only and supply-and-install to understand where value sits.
Cost-saving tips without compromising quality
- Standardise sections and lengths; batch parts to reduce setup.
- Match finish to environment (galvanise coastal, powder coat inland).
- Provide complete drawings and confirm tolerances early to avoid rework.
- Where looks allow, use off-the-shelf brackets instead of custom plates.
- Consider modular assemblies to minimise install time on live sites.
Welding, Coating and Lead Time FAQs for Steel Work
What is the average steel work cost per kg in Australia in 2026?
Rates vary by city, section and finish. Use per-kg for heavy/mixed assemblies and per-m for standard sections, then compare totals with the same inclusions.
How do I estimate price per metre for SHS and flat bar?
Take the section’s kg/m from a steel table, multiply by your supplier’s per-kg rate, then add cuts, mitres, drilling and finish.
Is powder coating or galvanising cheaper for outdoor work?
Galvanising wins for harsh/coastal environments; powder coat suits architectural inland jobs. For coastal looks, consider duplex (galv + powder).
How much does welding cost per hour?
Workshops quote a base $ per hour and apply premiums for stainless TIG, position welds and QA. Complexity and rework drive the biggest differences.
How long does custom metal work take from quote to install?
Simple cut-and-weld can be days; add time for galvanising or powder coating queues and site access windows.
What files do fabricators need for a fast, accurate quote?
DWG/DXF/STEP with dimensions, thickness, grade, quantities, bend lines, tolerances and finish. Include delivery postcode and install details.
Need a custom steel quote in Sydney, Melbourne, Brisbane, Perth or Adelaide?
Send your DWG/DXF/STEP, finish and postcode. We’ll reply with price per kg and per metre options, lead time and a clean inclusions list.
