C Channel Steel Adelaide

C channel steel posts finish an Adelaide retaining wall cleanly, capping the end of a sleeper run in hot-dip galvanised steel. RWS stocks PFC and TFC end posts at our Lonsdale 5160 warehouse alongside the full Adelaide steel post range.

Bulk buying keeps SA prices low, backed by our best-price guarantee. Price your wall with the calculator.

Galvanised steel C-channel for retaining wall construction – durable support for concrete and timber sleepers

What C channel posts do in a sleeper wall

C channel posts are end posts. Where an H-profile post accepts sleepers on both sides, a C channel (PFC or TFC) accepts sleepers on one side only, so it terminates a wall run with a closed steel face rather than an open channel. Use them wherever a wall stops: against a building, at a driveway opening, at the end of a terrace. Corner posts handle direction changes and standard posts carry the mid-run, so a typical Adelaide wall order combines all three profiles from one system.

Sizing C channels for SA walls

End posts follow the same pairing rule as the rest of the RWS system: 75-80mm sleepers pair with 100 series posts, and 100-120mm sleepers pair with 150 Heavy Duty series, rated for walls to 4.5m with engineer approval. All steel is hot-dip galvanised to AS/NZS 4680 and ACRS compliant. Match your C channels to the Adelaide concrete sleeper range, which carries the SA-made lines including a 60MPa SA option, all steel-reinforced and AS3600 compliant. For structural questions, our engineering page outlines the standards involved (AS1170, AS4100, AS4678); RWS supplies certified product but does not perform engineering.

Lonsdale warehouse logistics

Adelaide stock ships from Lonsdale 5160. Pickup suits utes and trailers for smaller steel orders, while delivered orders travel on external transport and require forklift access on site. Trade customers ordering through the trade portal receive next-day pickup or 72-hour delivery on paid orders.

What is the difference between PFC and TFC C channel posts?

Both are C-profile end posts that close off a wall run. PFC and TFC refer to the channel section type; the correct choice depends on your sleeper thickness and wall height, so match the series to the pairing rule or ask our team to confirm before ordering.

Do I need C channels at both ends of an Adelaide wall?

Only at exposed ends. A wall that dies into a corner post, another wall, or an embankment needs no end post there. Count one C channel for every visible termination in your design, then confirm quantities through contact us.