Tinned beans, do they have tobe heated for any reason?

[AmIWhatAndWhy]

I'm about to make a bean salad but only have tins, surely they are cooked then tinned?

It's cannelini and crab eye.

[bran]

That's fine, they're cooked already (that's how canning works).

[PeaMcLean]

I'd use tinned beans out of the tin for salads.

though not kidney beans. For some strange paranoid reason