Lucifer, you'll find that galleys/trolleys/canisters etc are all produced to one of the galley standards eg ACE(used by BA & affiliates) or ATLAS (AF, LH & even BA's new A319s), so a cart on a BA 737 is just the same as that on Concorde or a 747. One of the only aircraft to have type specific galleys & equipment was the Tristar - the galleys on which were fitted by Lockheed as opposed to the airlines themselves. Hope this helps.