Galvanised Steel Fabrication
Galvanizing is the chemical process where iron and iron alloys (steel) are dipped into molten zinc.
The zinc adheres to the steel through a spontaneous electrochemical process resulting in a tightly adhering layer of zinc on top of the steel.
This silver / grey coating does not rust and prevents steel from rusting. A galvanized iron pipe is rust resistant whereas its iron (not galvanized pipe) will rust for instance.
Many steel items are galvanized. Fence wire, steel wire, steel cables, steel lamp posts, nuts, bolts, screws, sheet metal for buildings and automotive applications, steel gutters, steel roofing, etc.
Galvanized material does not need paint for protection. Some paints do not adhere well to galvanized metal.