A person wearing protective gear and gloves is welding metal, with bright blue sparks and light emitted from the welding process in a dark workshop.

Welding Capability You Can Count On

Welding Built for Trust, Ready for Scale

SQ Welding is a high-performance welding and fabrication partner based in Toowoomba and built for serious scopes.
We deliver structural and pressure coded welding with the systems, supervision, and professionalism major contractors expect. From shutdowns to remote installations, we manage the details, coordinate trades and solve critical problems—without needing to be managed ourselves. Trusted by clients in energy, government and industry, we show up ready, take full responsibility and deliver work that’s done right, the first time.

A person wearing protective gloves and gear is welding metal, producing bright blue light and orange sparks.

Our Services

What We Do Best

A person wearing protective gloves uses a welding torch to join two metal pipes, producing bright sparks and a blue glow during the welding process.

Onsite Welding

We mobilise quickly and deliver expert welding onsite—whether for shutdowns, installations or remote maintenance. Our crew brings the gear, tickets and capability to get the job done efficiently.

The image shows the silhouette of an industrial plant with tall chimneys and structures, some emitting smoke, set against a hazy sky. Trees and power lines are visible in the foreground.

Oil & Gas Welding

We meet the stringent requirements of the oil and gas sector, delivering pressure pipe welding, pressure vessels and compliant fabrication with full traceability.

A person wearing protective gear welds metal, producing bright blue and orange sparks in a workshop setting.

Machinery Repairs

We repair and modify critical equipment on site, extending asset life and restoring structural integrity. Our repairs are precise, durable and completed with minimal operational disruption.

Bright blue and white light rays burst outward in a dark setting, creating a glowing starburst effect against a mostly black background.

Coded Welding

We provide fully qualified coded welders with extensive experience in pressure and structural applications. We follow procedures to the letter and document every weld for audit and assurance.

Image

Construction Welding

We support civil and industrial projects with steel fabrication, welding and install packages. We integrate with site operations and deliver reliably under principal contractor supervision.

Two people wearing protective welding masks and gear are welding metal, with bright blue sparks and light visible from the welding process.

Welding Supervision

Our certified welding supervisors oversee safety, quality and compliance. We manage ITPs, traceability, welder qualifications and MDRs—ensuring every weld is completed, recorded and signed off properly.

Two large, white rectangular industrial tanks with pipes and mounting brackets sit on a metal platform outdoors, surrounded by greenery and trees in the background.

We work where standards are strict and timelines are tight. Our clients rely on us to show up ready, run the scope and deliver without compromise.

Industries we work with

We support high-compliance, high-performance sectors including oil & gas, renewables, mining, civil infrastructure, food & beverage, agriculture and government. Our systems, certifications and capability are built for regulated environments.

Mining

We support mining clients with onsite welding, equipment repairs and project fabrication. Our team works safely in remote, high-risk environments to keep plant and assets operational.

Oil & Gas

We deliver pressure welding, pipework and structural support for energy infrastructure. Our compliance-first approach meets strict safety, quality and traceability standards across upstream and midstream scopes.

Civil Infrastructure

We provide structural steel and welding support for roads, water and public works. We integrate with head contractors and manage deliverables across complex, multi-stakeholder sites.

A spacious, modern hotel lobby with high ceilings, elegant lighting fixtures, plush armchairs around round tables, tall wooden panels, and a stylish shelving unit at the far end.
A worker in safety gear stands on a raised orange lift beside a large metal industrial building, with machinery and pipes nearby under a blue sky. A white Snorkel lift is also positioned in front of the structure.

Case Study Retrofit Installation – LNG Compressor Station

A late-stage issue in a live LNG project demanded urgent, engineered welding solutions. We took ownership of the scope, working under pressure to deliver high-spec outcomes in a constrained environment.

The Challenge

During final commissioning, the client identified a critical design omission: no containment tanks for oil carried by gas through compressor units. With equipment already installed and fabricated overseas, a fast, compliant solution was needed. The project was under pressure, operating in a live, high-compliance environment with tight timeframes and no margin for error.

Our Solution

We collaborated with site engineers to design and fabricate retrofit containment tanks rated for explosive atmospheres. We managed installation, built new footings, modified pipework and installed a vent line through roof level—all while maintaining compliance, site safety and documentation requirements. The scope required elevated work platforms and coordination across multiple trades.

The Outcome

We delivered the project to spec, under time pressure and site constraints. The client was impressed with our responsiveness, professionalism and technical capability. Our performance led to additional commissioning work and an ongoing project relationship—proof that when it matters, we deliver.

Clients we ARe Proud to Work With

AGL logo featuring five blue gradient rays fanning out to the left of the lowercase letters “agl” in black on a white background.
Logo for OGT Energy featuring a blue and green stylized circular design on the left, with bold blue text "OGT ENERGY" to the right.
Logo for "Next Compression" with "NEXT" in large letters, featuring a stylized blue "X," and "COMPRESSION" in smaller gray letters below.
Senex logo with the tagline "Delivering essential energy for life." The logo features the company name "Senex" in black text and a blue square with a rounded upper-right corner.
Queensland Government logo above the text "Department of Agriculture and Fisheries" in black and white.
AGL logo featuring five blue gradient rays fanning out to the left of the lowercase letters “agl” in black on a white background.
Logo for OGT Energy featuring a blue and green stylized circular design on the left, with bold blue text "OGT ENERGY" to the right.
Logo for "Next Compression" with "NEXT" in large letters, featuring a stylized blue "X," and "COMPRESSION" in smaller gray letters below.
Senex logo with the tagline "Delivering essential energy for life." The logo features the company name "Senex" in black text and a blue square with a rounded upper-right corner.
Queensland Government logo above the text "Department of Agriculture and Fisheries" in black and white.