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Steel Square Bar – Merchant Bar
Steel Square Bar and Billet
InfraBuild Steel Centre supplies steel square bar in a wide range of sizes. Manufactured in Australia from 300PLUS steel, InfraBuild Steel Centre's steel square bar exceeds the minimum requirements of AS/NZS 3679.1.
Typical Uses
Square merchant bars are used in a vast range of construction and engineering projects, and various market segments including:
- Commercial and residential construction
- Civil construction
- Energy (Wind and Solar)
- Mining infrastructure
- Transport and storage
- Rural
- Manufacturing
Features
- Available in a wide variety of sizes
- Exceeds the minimum requirements of AS/NZS 3679.1
- Up to 20% stronger for improved strength-to-weight ratios
- Requires no special pre-heating for welding
- Additional grades available on request
Relevant Standards
- AS/NZS 3679.1: Hot-rolled bars and sections
- AS 1442: Carbon steels and carbon-manganese steels - Hot rolled bars and semi-finished products
- AS 1444: Wrought alloy steels - Standard, hardenability (H) series and hardened and tempered to designated mechanical properties
- AS 1447: Hot-rolled spring steels
Does your construction business or engineering firm need steel products? InfraBuild Steel Centre is your trusted supplier, providing delivery services for square merchant bars and other products. We are Australia’s only fully vertically integrated steel manufacturer — producing building and construction products — spanning scrap metal recycling, steel manufacturing and downstream distribution.
Discover our extensive online catalogue today to find the best products, including tubular parts, DuraGal, flat bars and more.
To learn more about our steel products or customise your selection, contact us today, and we would be more than happy to help.
How we're making an impact
Circular steel manufacturing
We recycle scrap steel and transform it into new steel products through a continuous circular process. Keeping materials in use reduces waste and supports resource efficiency.
Renewable energy transition
We're increasing the use of renewable electricity across our operations as part of our decarbonisation pathway. This helps reduce emissions associated with steel production.
Lower embodied carbon solutions
Innovations such as SENSE 600® help customers reduce material use while maintaining structural performance. Less steel can mean lower embodied carbon outcomes.
Local manufacturing
Manufacturing steel in Australia strengthens sovereign capability, reduces supply chain complexity and supports local jobs and communities.
1.4M tonnes
of scrap steel recycled annually
77%
fewer greenhouse gas emissions from electric arc furnace steelmaking compared with traditional blast furnace steelmaking*
Helping customers build smarter
Sustainability and productivity don't need to compete. Through higher-strength steel, engineering expertise and advanced manufacturing, we're helping customers reduce material use, improve construction efficiency and lower embodied carbon. It's a practical approach that delivers better outcomes for projects, communities and the built environment.