Basic definition and structure of crossbeam shelves Cross beam shelves are one of the most widely used standardized shelves in the industrial warehousing field, with a core structure consisting of columns, beams, safety pins, and optional shelves. The columns are mostly made of cold-rolled steel, and the surface is treated with acid pickling, phosphating, and electrostatic spraying, which has strong rust resistance; The crossbeam is a lap welded beam or C-shaped steel, which is directly hung on the hole of the column through a snap on structure without welding. Assembly and disassembly only require simple tools and can be operated by a single person. This modular design allows shelves to flexibly adjust their length and number of layers according to warehouse space, adapting to different scenarios from small warehouses of 10 square meters to large logistics centers of tens of thousands of square meters. Whether it is storing large goods with pallets or adding shelves to store loose goods, it can be easily modified, making it a "universal warehousing solution" for manufacturing, retail, and logistics industries.