Surface mounted copper

[brum]

Why not bring pipes through floor to rads if your trying to make one big rad out of several it may not work unless linking top and bottom and then get cold at last rad ....brum

 

[thereisawizza]

Could you use tube from a different table?

 

[Whn1]

So how are the bends in the first picture done then?

Sand or water will achieve that kind of bend.