The production line adopts the form of leading out the plate head from the bottom of the steel coil. The basic construction project of this production line is relatively small, and the loading and feeding are more convenient. The equipped loading truck not only transports the steel coil to the center of the uncoiler, but also rotates the steel coil plate head towards the inclined wedge stripping direction, exposing it in the direction of the leveling machine. The concave convex rollers installed at the entrance of the leveling machine can greatly improve the longitudinal bending of the sheet metal. Used for unwinding, leveling, and cutting thicker metal coils. By configuring a dual head edge cutting machine and winding the edge wire, high-quality four edge cutting boards can be obtained.