Steel Posts

Retaining Walls Direct stocks a complete range of galvanised steel retaining wall posts — including H-beam, C-channel, corner, and joiner posts — available in 100 Series (standard), 150 Series (heavy duty), and 200 Series (premium strength). All posts are hot-dip galvanised for long-term corrosion resistance in Australian conditions, from coastal environments to reactive clay soils.

Our steel posts are engineered to work with our full range of concrete sleepers, giving you a fully compatible wall system. Use our Steel Post Sizing Guide to match the right series to your wall height, soil type, and sleeper weight. H-beam posts suit most standard residential and commercial applications; C-channel posts are ideal for lighter walls and fencing; corner and joiner posts are available for 90° and 45° returns.

Trade and bulk pricing available for builders, landscapers, and contractors — open a trade account or request a quote. Delivered Australia-wide.

Post selection for walls over 1m, on reactive soils, near boundaries, or adjacent to structures should be confirmed with a qualified structural engineer.