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.

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

though not kidney beans. For some strange paranoid reason

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