Cantilever racks uprights to use more steel or cold-rolled H section steel, cantilever with square tube, cold-rolled steel or H beam, cantilever and inter-column connection with plug-type or bolt-type, base and column-connected between the use of bolts, the base with cold rolled steel or H beam. Accessing goods are through the truck, driving, or manually. Shelf height is usually 2.5 meters (such as access to goods from the truck can be as high as 6 meters), cantilever length of 1.5 meters, each arm load is usually less than 1000KG. Such shelves are used for machinery manufacturing industry and building materials supermarkets. Increase the shelf, especially suitable for small space, high and low revenue, easy management, broad view, compared with ordinary shelf to shelf, higher utilization; According to carrying capacity can be divided into lightweight, the quantity, weight type of three.