Factory raw frame dude the rainbow marks around the welds are from the heat while welding
It'll have a clear lacquer coating that cracks and peels letting moisture in and it goes rusty, (the squiggly lines)
They start out like this....
![](http://www.radbmx.co.uk/archive/albums/m48/markw33/28-04-10006.jpg)
And end up like this....
![](http://www.radbmx.co.uk/archive/albums/m48/markw33/b0dc9b99.jpg)
![](http://www.radbmx.co.uk/archive/albums/m48/markw33/af566e8b.jpg)
Nowt you can do unless you keep it dry and clean...
![Undecided :-\](http://www.radbmx.co.uk/forum/Smileys/smilies/undecided.gif)