Steel RHS & SHS Posts - Rectangular & Square Hollow Section

From $66.00

Steelbuilders fabricated hollow sections are square or rectangle steel sections with a hollow core. Available in a range of wall heights and thicknesses, they regularly feature welded frames, columns and beams to provide stability and strength to various commercial & domestic construction and handyman projects for gates and posts where rust resistance is required.


Steel Square Hollow Sections (SHS) are a material of choice for columns and posts thanks to their strength to weight ratio, resulting in the same carrying capacity compared to other steel profiles. Plus, the square flat faces streamline construction and on-site fixing. Square Hollow Sections (SHS) are fabricated with a smooth, even finish on the outside, meaning Square Hollow Sections have no sharp edges and require little clean up after fabrication.

Are you looking for the premier steel fabricator and building product supplier in the NSW domestic housing market? Choose Steel Builders, creating smarter solutions across the industry and beyond. Shop with Steel Builders online today to view our entire range or contact us with your requirements for more custom sizes or fabrications. Get a quote today!

Each SHS (square hollow sections) post is fabricated with top and bottom plates made to order, while our stormwater RHS posts are prepared in standard lengths (2, 4 and 6-metre lengths) to be joined on-site if required. We also sell a range of stormwater RHS accessories to suit, including kerb adaptors, RHS joiners and stormwater orifice plates and connection accessories.

Steel posts (SHS) with top and bottom plates made to order.

Follow these simple steps.

  1. Simply choose the square hollow section (SHS) that you require for your post.
  2. Input the required overall finished length of your post that you require.
  3. Choose the finish that you require primed (zinc-rich primer) or hot dip galvanised
  4. Choose the base plate that you require (all base plates have 15mm holes for masonry fixing)
  5. Choose the top plate you require (all top plates have holes to suit M16 structural bolts
  6. Place the order

Steel Builders will manufacture the posts to your requirements. 

Base plates and top plates are orientated as they are shown on screen. So choose your base plates and top plates as though the top of your screen is north and you are looking at the posts from above.



Much like the broader Construction Industry, the fall-out from Covid-19 is causing delays with some of our external suppliers and supply chain. Please allow additional time for your structural steel orders, particularly orders requiring a Galvanised Finish. If you have concerns, please contact us directly before placing any orders for Structural Steel

Standard Stock & Delivery:

  • Delivery Time: For an accurate indication onleadtimes, please contact our offices. Alterntively, we will be in contact once we receive your order as to delivery dates.
  • Delivery Costs: For delivery costs, please enter your suburb and postcode on the cart page.


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