What's wrong with this pipe?

[JohnMalcolm]

Hi All,
I have these heating pipes.
I think I have cleaned them last year and there is a lot of corrosion already.
There isn't any water dripping and there is no dump coming from underneath as the floor is insulated with 25mm Celotex and SuperFoil on top as you can see.

What should I do?

 

[ShaunCorbs]

Clean them with soapy hot water and a green scotch pad then give them a paint

 

[JohnMalcolm]

Clean them with soapy hot water and a green scotch pad then give them a paint

should I use emulsion paint?

 

[ShaunCorbs]

Can do doesn’t really matter it’s just a coating etc