The common surface treatments for warehouse cages are hot-dip galvanizing and electrostatic powder coating. The two differ clearly in corrosion resistance, appearance and cost, and a wrong choice directly affects service life and maintenance.
Hot-dip galvanizing immerses the cage in molten zinc, giving a thick, even coating with strong corrosion resistance that also covers welds and edges. It suits outdoor storage, damp environments or contact with moisture, lasting long with little maintenance.
Electrostatic powder coating applies powder and cures it at high temperature, giving a smooth surface and selectable colors, more attractive than galvanizing and suitable for clean workshops where appearance matters; the coat is thinner and less resistant to impact and outdoor weathering than galvanizing.
Which to choose depends mainly on the environment: for long-term outdoor or damp use, prefer hot-dip galvanizing; for turnover mainly inside a clean workshop where appearance counts, powder coating works; the two can also be combined by area.
Nanjing Tongnuo (Xintongnuo) supplies both hot-dip galvanizing and electrostatic powder coating and recommends by service environment and budget. The 9,000 m² factory takes non-standard customization; tell the maker your storage environment and handling frequency when ordering.