MUELLER INDS INC. DL-,01 revenue for the last year amounted to 3.10 B EUR, the most of which — 2.16 B EUR — came from its highest performing source at the moment, Piping Systems, the year earlier bringing 2.55 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought MUELLER INDS INC. DL-,01 2.33 B EUR, and the year before that — 2.77 B EUR.