Steel Posts

Galvanised Steel Posts for Concrete Sleeper Retaining Walls

The steel post is the structural backbone of any concrete sleeper retaining wall. Choosing the right post size, section type, and embedment depth determines whether your wall performs for decades or fails within years. At Retaining Walls Direct, we supply hot-dip galvanised steel posts in three series — 100, 150, and 200 — covering every wall height, soil condition, and load scenario encountered in Australian residential and commercial construction.

All posts are manufactured from structural grade steel and hot-dip galvanised to AS/NZS 4680 for long-term corrosion resistance in Australian soil conditions, including reactive clay, coastal environments, and acidic soils.

Shop by Series

• 100 Series Steel Posts — standard residential walls up to approximately 1.0m
• 150 Series Steel Posts — heavy duty for walls 1.0m–1.8m and reactive clay sites
• 200 Series Steel Posts — engineered specification for tall walls and high surcharge applications
• Corner & Joiner Posts — 45° and 90° corner posts for all series
• Fence Brackets — galvanised brackets for fence-on-wall installations

Not sure which post to specify? Read our C-Channel vs H-Beam Post Selection Guide or our Post Embedment Depth Guide.