Dual Stringer

Dual Stringer

Weldlok Dual Stair Stringers and Stair Treads, designed for ease of use for installations with the set, prefabricated sizes giving you confidence when working on a new build or undertaking renovation work. The Weldlok Dual Stringer range is robot-welded for consistency and all come Hot Dipped Galvanised
for lasting protection.

Our Weldlok Dual Stair Stringers are tough, durable and built to last, and importantly compliant with the Australian Building Code, removing any safety risks and concerns you may have when choosing the right Stair Stringer for your build. Engineered to provide structurally sound accessibility with up to 5mm RHS thickness, our Stair Stringer design is solid, under foot-traffic, producing minimum bounce, therefore, avoids that feeling of unstableness you may encounter with staircases. A fully engineered design that has been tried and tested.

Dual Stair Stringers: The Essentials

Weldlok Dual Stair Stringers are also an attractive solution for architects and builders as they are highly versatile and can be configured for 1 to 17 treads. A universal Stair Stringer design, which means you can put any kind of step on it – timber, steel and aluminium. Weldlok has been manufacturing them for a long time. They’re sold in convenient pairs with tread mounting brackets welded in place and are generally used for residential purposes or light industrial use. For example, warehouses, factories or spaces with a mezzanine level.

Weldlok Dual Stair Stringers are fully engineered and backed by the technical information and support to make your job that bit easier, and of course, save you time and money in the process. They’re also convenient, easy to transport and install, and are available off-the-shelf ready to be delivered to your site within days from our extensive distribution network.

In addition, we can supply Hot Dip Galvanised Stair Treads, tread mount brackets and brackets on request (fixings not included), meaning all the essential steel pieces you need are available from one location.

Compliant and Australian Standards

When you purchase our Dual Stair Stringers, we guarantee that they are fully compliant with the Building Code of Australia and other relevant regulations. We use products that we know are suitable for the Building Code and end-use. Weldlok Dual Stair Stringers are Hot Dip Galvanised to AS/NZS4680 and fully labelled.


  • Supplied in pairs with tread mounting brackets welded in place, ready for installation
  • Available off-the-shelf in 1 to 17 treads
  • Standard 175mm rise and 250mm going at an angle of 35 degrees
  • Designed to take a maximum tread width of 1000mm
  • In order to comply with BCA a tread depth of 50mm minimum is required
  • Optional accessories are available including Brackets and Steel Stair Treads
  • Labelled and Bar Coded to give you peace of mind

Talk to us to know more about our Weldlok Dual Stair Stringers.

Fill out this form to download our Dual Stringer brochure...