Guides

Fencing Steel Guides

Trade reference guides for the fencing industry — sizes, finishes, post selection and retaining wall steel specifications.

RHS Sizes for Fencing

Common rectangular hollow section sizes used across Australian fencing — 50×25, 75×50, 100×50 and wall thickness guide.

Square hollow section sizes used for fence posts and gate frames — 50×50, 65×65, 75×75 and wall thickness.

Circular hollow section nominal bore guide — 33NB to 114NB for rural, wildlife and commercial fence posts.

When to specify pre-galvanised steel vs hot-dip galvanised after fabrication — coatings, durability and application.

Choosing the right post size and length for residential, commercial, security and rural fencing applications.

H-post and C-post sizing, embedment depth, sleeper compatibility and finish options for engineered retaining walls.

Heavy-duty commercial post sizing, footing depth and spacing for security, industrial and council projects.

Line posts, strainers, overhangs and apron steel for koala, macropod, wombat and roadside fauna exclusion projects.