Heavy-duty (beam type) shelves are wire mesh decking generally made of cold-rolled profiled steel, the column is made of 80 (90) x60 (70) Ω steel surface punching diamond holes, the beam is made of 80x50-100x50-120x50-140x50-160x50 bonding beam connection pendant, generally with trays instead of laminates for easy forklift handling. Layer load 1 to 5 tons of design, surface electrostatic spraying, waterproof and anti-rust and corrosion resistance is stronger, high safety factor, plug-in combination, no need to use screws and welding, assembly is very convenient, make full use of space area, provide storage capacity.