not exactly a récipe, but could fit with this mod a way to store and transport molten metals without the need of using pipes, something like the molten metals pictures, a bucket, made from Wood and iron, or something like that
(I actually dont know how difficult this can be, so if its a hell, just forget it)

Use liquid waggons. Liquid metals would meld standard buckets.

thats the thing, Im not using trains either, just logistic chests and robots
about the buckets, I guess they would, but maybe a specific bucket, made from Wood and Steel, or cobalt Steel, or somethin stronger, harder to meld

but as I said, just an idea, leave it if its too complicated

You would need to make them out of special concrete as far as I know. My suggestion for you is just produce liquid where you need it.