Buying Wire Mesh Cages: Materials & Selection
Wire mesh cages — also called warehouse cages, butterfly cages or storage cages — are unitized metal storage containers widely used in warehousing and logistics. Welded from steel wire, they fold, stack, keep contents visible and work with forklifts, and are common equipment in manufacturing workshops, logistics centers and e-commerce warehouses. Before buying, it is worth understanding them systematically in terms of materials, load capacity and surface treatment.
Main material and bottom structure. The cage body is welded from high-tensile, cold-rolled hardened steel wire, usually Q235 low-carbon steel. Wire diameter (gauge) is the key indicator of load capacity: 4.5 to 4.8mm suits light small parts and electronics accessories, with a reference load of 200 to 500kg; 5.0 to 5.8mm suits general medium-duty and workshop turnover, with a load of 500 to 1000kg; 6.0 to 6.5mm suits heavy goods and automated warehouses, with a load of 1000 to 1500kg. Thicker wire means stronger load capacity but also more self-weight, so match it to the actual goods. The bottom is usually reinforced with U- or W-shaped channel steel, generally 1.5 to 2.5mm thick; choose a thicker channel when stacking 3 to 4 layers.
Surface treatment. Electro (cold) galvanizing is cost-effective with a bright finish and suits ordinary dry indoor storage; hot-dip galvanizing offers stronger corrosion and rust resistance and longer life for damp workshops, cold chain and outdoor use; powder coating lets you choose colors for a neat, wear-resistant finish in warehouses that need zone management. For cold chain or humid southern regions, hot-dip galvanizing is recommended.
Core features and types. Cages offer strong load capacity, typically 500 to 1500kg per cage; empty cages fold to under 10cm thick, saving over 70% of return and storage space; standard units stack 3 to 4 high for three-dimensional storage; the mesh keeps goods in plain view for easy counting. By structure they come as folding, fixed, wheeled, lid-fitted and towed types; common sizes are small 800×600×640mm, medium 1000×800×840mm and heavy 1200×1000×890mm, with 1000×800×840mm the industry standard that fits a 1200×1000mm standard pallet.
Buying notes. Distinguish three load concepts — dynamic load (when moved by forklift), static load (at rest on the floor) and stacking load (the bottom cage's load when stacked) — and the rated load should exceed the actual total goods weight with a safety margin. Also check mesh spacing (dense mesh for small parts, wider mesh for large items), whether the forklift pockets match your existing forks, whether welds are full and free of cold joints, and whether stacked cages locate securely. For bulk orders, visit the works or request on-site production video, and confirm after-sales and warranty terms.