Batch annealing furnace coil

Batch annealing furnace of the present invention includes: a coil support, placing end surface of the coil support web to the web support roll axis standing state; inner cover, the inner cover cap covering the roll placing the sheet bearing the entire web; cooling tube, the cooling tube depends from the upper portion of the inner cover of the web to the web support placing the hollow inner peripheral portion, and a cooling medium circulating inside itself, thereby cooling the coil from the inner surface side.