A production equipment line for hot-rolled steel strips, the production equipment line comprising: a roughing mill group 3 that comprises a plurality of roughing mills 31, 32 that hot roll a rolling material 10 that has been heated to a prescribed temperature to a finish rolling starting sheet thickness; and a finishing mill group 6 that comprises a plurality of finishing mills that perform a controlled roll of the rolling material 10 to a finished sheet thickness. At least one of the plurality of roughing mills is a reversible rolling mill 31. On the upstream side of the reversible rolling mill 31, the production equipment line for hot-rolled steel strips comprises one of a slow cooling device 42 that slow cools the rolling material at a water volume density of less than 1000 L/min.m2 anda quenching device 41 that quenches the slow-cooled rolling material 10 at a water volume density of 1000 L/min.m2 or higher. On the downstream side of the reversible rolling mill 31, the productionequipment line comprises the other of the slow cooling device 42 and the quenching device 41.