Galvanised Welded Mesh Sheet
Resistance welded galvanised mesh gives a rigid sheet that can be fixed straight into place without being tensioned in a frame.
Wire thickness in galvanised welded mesh starts at 2 mm and runs through 2.5 mm, 4 mm, 5 mm and heavier steel wire. The thicker the wire, the further the sheet carries its own weight, and the less it sags at the same aperture.
The apertures are usually 5x5 cm squares. Cage work calls for closer apertures such as 2x2 cm and 2.5x2.5 cm; special heavy-wire sheets are also produced with 3x3 cm or 4x4 cm apertures. The smaller the aperture, the more wire goes into each square metre, and with it the weight and the cost.
Because the wire is heavy, the sheet can be welded or fixed directly without being tensioned inside a frame, and it will not sag or bend over time. The galvanising forms a zinc layer on the wire that protects the surrounding steel cathodically even where it is scratched, so unlike a painted surface, rust does not start at the scratch.
Frequently asked questions
Cage work calls for closer apertures such as 2x2 cm and 2.5x2.5 cm, while 5x5 cm is the common choice for general use. The smaller the aperture, the more wire goes into the sheet and the higher the cost.
Heavy-wire sheets can be welded or fixed straight into place without being tensioned in a frame. With thinner wire and wider apertures an edge profile is needed as the span grows.
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