Heavy duty shelf - with the advantages of integrity, simplicity, beauty, high safety factor, quick access, saving space and improving storage capacity. Heavy shelves made of high quality cold-rolled steel, high-quality selection of square steel beams, bearing capacity, easy to deformation, hanging between beam and column for convex cylindrical insertion, reliable connection, easy disassembly, and use the nail to prevent the forklift when the work will provoke a beam; all the shelves of the surface by pickling, phosphating electrostatic spraying process such as processing, anti-corrosion, beautiful appearance. Suitable for large warehouse.