25-07-12, 07:58 PM
Is it bolted down, or concreted in?
As for "think its steel", try putting a magnet to it - if its steel it'll attract the magnet which other metals won't.
Basically what you're aiming to do is to leave a very slightly rough surface (to give something for your paint / primer something to "key" to, ie it'll adhere better).
If its bolted, one option is to remove it and have it galvanised (it'll undoubtedly be dearer, but it'll probably last longer) - try asking some fabrication shops in your area (if they don't do it, they'll probably know of someone who can). There are rattle cans of galv spray available too (not sure of price or likely results though).
As for "think its steel", try putting a magnet to it - if its steel it'll attract the magnet which other metals won't.
Basically what you're aiming to do is to leave a very slightly rough surface (to give something for your paint / primer something to "key" to, ie it'll adhere better).
If its bolted, one option is to remove it and have it galvanised (it'll undoubtedly be dearer, but it'll probably last longer) - try asking some fabrication shops in your area (if they don't do it, they'll probably know of someone who can). There are rattle cans of galv spray available too (not sure of price or likely results though).