Shelf column refers to the column structure used to support the shelf beam and shelf. It is usually made of metallic materials, such as steel or aluminum alloy, with load-bearing capacity and stability. The height of the rack column can be adjusted according to the needs of the storage of goods, usually by adjusting the nut or installing the buckle to achieve the height adjustment. The bottom of the shelf column usually has a fixed foot or base to ensure the stability and safety of the shelf. The design and material selection of shelf columns should consider factors such as the weight, size and storage environment of the goods.