I have a job which requires replacement of parking bay crash/nudge
barriers/buffers for a private residential estate.

The original installation comprised of 2 wooden rails to each bay (one
above the other) between 2 'spring-loaded" posts, left and right of
each bay. The posts comprise a vertical metal strap with a separate
metal strap rising behind at a 45° angle to meet (but not touch) the
vertical strap at the top. These may be made up of a single length, in
the form of a triangle, with the base cemented into the ground.

Either way, the original intention was that a car contacting the wooden
rails would not meet solid resistance until the vertical post/strap was
pushed back against the 45° strap.

The original wooden rails were very lightweight and have long since
been smashed and/or rotted away. Into each post there are fitted 2
heavy duty bolts which seem over specified for the lightweight wood...
maybe the money ran out and wood substituted steel?

Anyhow, the owner would now like the barrier re-instated using metal
(motorway style) rails, or something along those lines. Each bay is
just over 8' wide and needs to share fixings on each post with the
following bay, i.e. there are 2 holes per post, one above the other.

Anyone know where I can find such material?

Thanks,
deano.