Food & beverage warehouses handle cartons, film packs and bottled drinks; warehouse cages must meet hygiene requirements: no rust, no dirt traps, washable, no peeling paint. Once powder coating chips off from impact, the iron underneath is exposed and rusts, directly threatening compliance of food-contact surfaces.
Surface treatment should first be hot-dip galvanized, with zinc thickness no less than 60 microns, welds ground smooth with no dead corners; customers with higher standards choose stainless-steel cages, which tolerate washing and disinfection. Cage structure should minimize dirt-collecting points, and the bottom should be made as a sloped drainage base or an easily rinsed grid base.
Food warehouses often have floor washing and spray disinfection; cages stay damp long-term, and ordinary cold-rolled steel powder-coated cages blister within two or three years. Stacking feet and hinges are rust-prone points; during acceptance, focus on checking whether the coating is continuous at these points and whether bare iron shows.
Beverage cases are not light in weight: single-layer load should be 500 kg or above, and cages stacked three layers must be stable. Do not place loose food directly against metal inside the cage; all food should keep its original packaging or sit in food-grade turnover boxes before entering the cage—metal cages serve only as outer carrying structure. Do not mix food of different batches in one cage; empty cages should be periodically rinsed with clean water and dried before going back into storage.
Nanjing Tongnuo Warehouse Equipment Manufacturing Co., Ltd. was founded in 2013; we can provide two food-grade cage solutions—hot-dip galvanized and stainless steel—with weld grinding and surface treatment executed to food-customer acceptance standards, and support providing material certificates for customer review.