Top Quality Merchant Bar Steel

Top Quality Merchant Bar Steel

Merchant Bar Products available from United Steel

United Steel supplies and processes Merchant Bar products in the Australian market. Our depth and range of steel products with our strong supplier network means we are well placed to meet your needs.

We are proud to stock, supply, and deliver flats, angles, squares, and rounds to our customers working in the civil and infrastructure, residential and non-residential building, general fabrication and manufacturing, mining, and renewable energy industries.

The right merchant bar product when and how you need it

We stock the full range of:

  • Flat Bars, Rounds & Squares
  • Equal & Unequal Angles

The Merchant Bar products we supply meet the minimum requirements of Australian Standard AS/NZS 3679.1 2010.

We are a distributor of Liberty Merchant Bar products and also source other options. Chances are that whatever your business and/or project requirements are – United Steel will have it, contact us and we’ll keep your business running smoothly and on time every time. 

Merchant Bar processing capability to support your projects


  • Engineering civil construction
  • Residential & Non-residential building
  • Mining infrastructure
  • Transport and Manufacturing

The United Steel sales team utilises the latest processing capabilities to help you increase efficiency and reduce waste for your projects.

To reduce your burden of project compliance, all United Steel Merchant Bar products are supplied to exacting quality and safety standards.

Merchant Bar Products supplied by United Steel

Square Bar, Round Bar, & Flat Bar

Square bar is a solid section that features a square shape. Mild steel square bars are frequently utilized in balustrading applications, architectural uses, windows and door frames. They offer ease of cutting, welding, and forming, making them a versatile product for commercial buildings. United Steel stocks a wide range of mild steel square bars in various sizes, conforming to AS/NZS 3679.1.

Round bar, similar to square bar, is a solid section but with a round shape. Mild steel round bars find numerous applications in construction and machinery. With their circular profile, they are available in a wide range of sizes and dimensions, offering versatility for forming, bending, and machining. United Steel stocks a comprehensive selection of round bars that adhere to AS/NZS 3679.1.

Flat bar features a flat surface and a rectangular shape. It finds extensive applications in fabrication, as it is a versatile merchant bar product that can be easily cut, drilled, and welded. United Steel offers a wide range of flat bar products that conform to AS/NZS 3679.1.

View the Merchant Bar Environmental Product Declarations (EPD) in our technical library.


Merchant bar equal angles serve various purposes in fabrication, engineering, and construction projects. They are among the most commonly used merchant bar products. Equal angles are often employed in constructing framing supports, manufacturing equipment components, and reinforcement brackets for larger structures. Manufactured in a right-angle shape, they provide durability while remaining workable. United Steel supplies quality angles manufactured by Infrabuild in Australia, meeting AS/NZS 3679.1 – 300 standards.

Unequal angles are available in a wide range of sizes to suit applications across multiple industries such as engineering, construction, transportation, and manufacturing. They are a commonly used profile.

View the Merchant Bar Environmental Product Declarations (EPD) in our technical library.

Merchant Bar Products Catalogue – United Steel

United Steel - Merchant Bar

Need more information

Our Merchant Bar products are available in a range of sizes and meet the relevant Australian Standards. Please contact us with all your merchant bar requirements.