... link should I buy, galvanized or PVC coated ?Firstly chain link fence with a wire diameter of 3mm - 4 mm ... parameters. for your reference: 1. Materials: Galvanized iron wire(electro/ hot-dipped), PVC coated wire (RAL series : Black, Dark green, Brown, Gray ... etc.), Stainless Steel wire2. Wire Diameters: Common Wire Gauges are 9, ...