Structural Steel Welding
Kelly Steel provides structural steel welding for commercial, industrial and residential projects across Melbourne, carried out by coded welders working to AS/NZS 1554. Our steel welding fabrication work covers new structural connections and existing structure repairs, completed either in our Dandenong South workshop or on-site so one team handles the job either way.
Workshop & On-Site Welding
Most steel welding fabrication is completed in the workshop as part of structural steel fabrication, where fit-up and welding follow shop drawings with WPS/PQR documentation and NDT carried out where specified. But not every job can come off-site.
We also weld on-site for:
- Plant shutdowns – welding repairs completed within tight maintenance windows to minimise downtime
- Fast-track replacements – where a failed or damaged component needs to be welded back into service quickly
- Structural connections during erection – final fit-up and welds completed on-site as part of installation
This means a repair or modification doesn’t always require pulling a structure apart and freighting it back to a workshop.
Welding Standards & Compliance
Our welding is carried out to:
Structural steel welding
AS 4100
Structural steel design
AS/NZS 5131
Structural steelwork fabrication and erection
Welders work from documented WPS/PQR (Welding Procedure Specifications and Procedure Qualification Records), with non-destructive testing (NDT) carried out where a project specifies it. Every job comes with weld maps and material certificates as part of the handover pack, so certifiers and engineers have the documentation they need without chasing it after the fact.
Structural Welding for Different Project Types
- Commercial - structural connections for portal frames, mezzanines and multi-storey packages, coordinated through project management
- Industrial - plant steelwork, shutdown repairs and fast-track replacements to minimise downtime
- Residential - beam and column connections for extensions and renovations
Why Choose Kelly Steel for Structural Welding
- Coded welders working to AS/NZS 1554, with WPS/PQR and NDT where specified
- Workshop and on-site welding capability from one team, not split across contractors
- ISO 9001 certified, and compliant with AS 4100 and AS/NZS 5131
- Structural steel fabrication and installation run under one program if your project needs both
Get a Quote
Send through your drawings, specification, or a description of the welding work needed, along with your timeline, and we’ll come back with a quote.
FAQs about Structural Steel Welding
What is a coded welder, and why does it matter?
A coded welder holds a current qualification tested against a specific welding procedure, confirming they can produce welds meeting the required standard. It matters because structural welds carry loads; an uncoded or unqualified weld can be a compliance and safety risk that certifiers won’t sign off on.
Do you provide welding certificates for compliance and certifier sign-off?
Yes. Every job includes weld maps and material certificates as part of the handover pack, aligned with WPS/PQR documentation, so certifiers and engineers have what they need for sign-off.
Can you weld on-site, or only in the workshop?
Both. Most structural welding happens in the workshop as part of fabrication, but we also weld on-site for plant shutdowns, fast-track replacements and final structural connections during installation.
What standard does structural steel welding need to meet in Australia?
Structural steel welding is governed by AS/NZS 1554, alongside AS 4100 for design and AS/NZS 5131 for fabrication and erection. We work for all three.
What's the difference between steel welding fabrication and structural steel welding?
Steel welding fabrication is the broader process of cutting, fitting and joining steel components into a finished structure. Structural steel welding is the specific, compliance-governed joining work within that process the welds that carry load and need to meet AS/NZS 1554.
Do you repair or modify existing steel structures?
Yes. We handle on-site repairs and modifications, including fast-track replacements for damaged components and welding work completed during plant shutdowns.
How do I get a quote for a welding job?
Send through your drawings, specification, or a description of the welding work needed, along with your timeline, and we’ll come back with a quote.
