Rolling process of large-scale and ultra-large steel double reversible finish rolling area

The invention provides a rolling process of a large-scale and ultra-large steel double reversible finish rolling area. The rolling process of the large-scale and ultra-large steel double reversible finish rolling area comprises a rough rolling area, a reversible first finish rolling area and a reversible second finish rolling area, and the rough rolling area, the reversible first finish rolling area and the reversible second finish rolling area are independently arranged. Firstly, a steel billet is heated by a heating furnace and then enters into a dephosphorization machine for dephosphorization to enter into the rough rolling area, a blooming machine is arranged in the rough rolling area, and blooming reversible rolling is carried out at the blooming machine; the steel billet is transported to the reversible first finishing rolling area, a first universal rolling mill, a first edge rolling mill and a second universal rolling mill are arranged in parallel in the reversible first finishing rolling area, and re