PURPOSE: To satisfactorily and smoothly handle multiple rack bodies not in use among many rack bodies used when products such as H-steels are transported.

CONSTITUTION: A rack body storage body is constituted of a main receiving beam mounting and supporting many rack bodies 15, a coupling beam 3 hooking and holding the rack bodies 15 on the main receiving beam in the aligned state, and large hangers 7 serving as suspending portions, many rack bodies 15 are regularly aligned, mounted, stored, and integrally conveyed, and they can be stably stacked together and stored in a narrow space.