Patent ID: 8424353

Claim:
A metal rolling system comprising a rolling mill, a first winder disposed on an entry side of the rolling mill, a second winder disposed on a delivery side of the rolling mill, a welder, and a cutter, wherein the welder and the cutter are disposed between the rolling mill and the second winder or between the rolling mill and the first winder such that the welder is closer to the second winder than the cutter, wherein the metal rolling system is configured to roll a product strip while causing the product strip to pass through the rolling mill back and forth along a pass line, the pass line being defined as a passage route of the product strip, and wherein the metal rolling system is configured to perform functions comprising: welding, by the welder, a leader strip held by the second winder to an end portion of the product strip, and subjecting the product strip to reversible rolling by the rolling mill without rolling the leader strip and a welded part of the product strip which is welded to the leader strip, while providing tension from the second winder through the leader strip to the product strip including near the end portion of the product strip; and cutting, by the cutter, the leader strip at a position outside of the welded part, and winding up the product strip including the welded part at the end portion of the product strip onto the first winder without cutting out the welded part, followed by unloading a coil of the product strip having been wound up.