A steel plant for the production of long metal products comprises a continuous casting machine (11) and a rolling mill (12) disposed contiguous and in direct succession downstream of the continuous casting machine (11). The continuous casting machine (11) is provided with at least two casting lines (11a, 11b) and the rolling mill (12) is provided with at least two rolling lines (12a, 12b). The plant comprises a single feed apparatus (14) for feeding molten metal, and the at least two casting lines (11a, 11b) are configured to receive molten metal from the single feed apparatus (14).