Multi-ring simultaneously used annular furnace heat treatment production line

A multi-ring simultaneously used annular furnace heat treatment production line comprises annular furnaces and is characterized in that a plurality of the annular furnaces are parallelly arranged, and a transition area which is fixedly connected with the ground is arranged between the adjacent annular furnaces; and a rotation mechanism is respectively arranged below the annular furnaces. According to the multi-ring simultaneously used annular furnace heat treatment production line, flexible production of heat treatment is achieved, and workpieces with different carburized layer depth are continuously fed into the furnaces for treatment. Compared with production lines in prior art, the multi-ring simultaneously used annular furnace heat treatment production line is simple in structure, multi-purpose, simple in operation, wide in application area and capable of simultaneously differently treating the workpieces, improving work efficiencies and simplifying treatment processes.