Galvanized Iron Wire
Two galvanizing routes, two gauge ranges, and a zinc coating figure you can actually specify against.
Coating and Finish Selection for Wire Mesh Products
Almost every mesh failure is a coating decision made by somebody else.
The Problem
Why This Needs A Process
Mesh is bought on aperture and fails on coating. The same product is offered here in four finishes with different costs and different service lives, and the choice belongs to the buyer who knows the site - not to whoever is quoting.
Process
Step By Step
Describe the exposure
Indoor and dry, outdoor inland, coastal, immersed, or chemically aggressive.
Decide before or after
Galvanizing before welding or weaving protects the parent wire; after welding or weaving also covers the weld nugget and the crossing points, which is where corrosion starts.
Pick the process
Electro galvanizing for a thin even coating on short-life and indoor work; hot dip for 40-300 g/m2 of zinc where the product stays outside.
Consider PVC
A polymer skin over the zinc for coastal, immersed, decorative and agricultural duty, in a colour to specification.
Consider stainless
Where no coating will survive - 304 for general service, 316 and the L grades for chlorides and post-weld fabrication.
Write it on the order
State the process, whether it is applied before or after, and the coating weight in grams per square metre. The word galvanized on its own specifies nothing.
Products Involved
What This Solution Is Built From
Hexagonal Wire Netting
Eleven mesh sizes with the minimum zinc coating and the tolerance standard published against each one.
Welded Mesh Fence
Rigid panel fencing that arrives straight, lines up on a 2440 mm post grid and stays rust-free after installation.
Welded Wire Mesh
Nine export mesh sizes with the wire gauge band published against each one.
Stainless Steel Wire Mesh
Forty-eight woven specifications with open area and weight published for every one of them.
Black Iron Wire
Two tensile grades, one diameter range, and five ready-made forms.
Industries
Where This Solution Applies
Construction and Building
The mesh, the grating, the screen and the tie wire on one packing list.
Agriculture Livestock and Breeding
Mesh for buildings that stay damp and animals that test every joint.
Chemical Petroleum and Filtration
Alloy, open area and coating chosen against the chemistry, not the catalogue price.
Road Rail and Airport Infrastructure
Boundaries and embankments for projects that are measured, inspected and signed off.
FAQ
Coating and Finish Selection Questions
What zinc coating weight can you supply?
On hot-dip galvanized iron wire, 40 g/m2 to 300 g/m2. On hexagonal wire netting the published minimum galvanization runs from 30 to 145 g/m2 depending on mesh size, for hot dipped netting.
Before or after weaving - which should I pick?
After, if the product will be wet or washed down, because it seals the crossing points. Before, if cost matters more and the product will be dry or indoors.
When is PVC worth the extra cost?
Coastal air, immersion, agricultural buildings and anywhere the mesh is visible. It is offered on fence panels, chain link, hexagonal netting, welded mesh and insect screen.
When should I skip coating entirely?
When the wire will be cast into concrete or used once - black iron wire and black annealed wire are uncoated and cheaper for that duty.
Let Us Work Through It With You
Send what you know and we will tell you what else we need. No form, no call centre - the factory answers.