We stock steel privacy fences manufactured by BlueScope Lysaghtand Gram Engineeering.  Both steel privacy fence are available in two profiles and offer a full 10 year warranty.

The posts and rails are manufactured from Hi tensile steel with a
     ZINC protective coating.
The infill sheets are made from pregalvanised steel.
As a finishing process all the materials are protected with hard
     baked on coating with a selection of 21 colours.

Colorbond®  is a registered trade name of BlueScope Steel (previously BHP Steel).  Bluescope offers both Neeta and Smarta sheet profiles.

Gram Engineering Pty Ltd is the market leader in the manufacturing of privacy fencing in Sydney. Gram manufactures two profiles - colorline and gramline.

GRAMLINE is a profile unique to Gram. It has a ZIG ZAG shape in
     such a way that both neighbours have the same visual appearance.
     ‘THE GOOD SIDE IS BOTH SIDES’. This profile is also more rigid.
COLORLINE is a standard Trimdeck profile that has been proven
     and has been established in the market for over 15 years.

The Gramline Fencing system comprises two additional optional variations.

The Fence itself (posts, rails & sheets are the essential parts.
Gramlat lattice on top, which is commonly a 300mm strip of
     diagonal lattice (see Lattice --- rollformed -- Gramlat)
A PLINTH or weedwall or gap stopper under the fence. This consist
     of 1 to 3 strips of metal, placed horizontally, that cover the gap
     between the bottom rail and the ground. The first thing that the
     plinth achives is to eliminate those ugly gaps under the fence.
     To learn more about the PLINTH please click on the red word to go
     to the Gram site.