The notable exception to the rule is with panels manufactured from with Galfan® or similar zinc alloy coated wire to British Standard (BS EN 10244-2:2009). Zinc aluminium alloy coated before welding (Galfan®) The downside of this process is that it requires significant ‘fettling’ after manufacture to remove surface imperfections and sharp zinc spikes which adds to the cost. The manufactured panels are typically hot dip galvanised for full coverage of the zinc coating. Rigid mesh fence panels galvanised with a zinc coating after the wires are welded into place are inherently more durable than panels manufactured from pre-galvanised wires. However, the welding process effectively removes the protective layer of zinc, leaving the wire unprotected and subject to corrosion at precisely the points where it needs to maintain its integrity. During manufacturing, each intersection of horizontal and vertical wires is welded to form the mesh panel. The mesh fence will be manufactured with wire that has been pre-galvanised with a zinc coating before being welded together. Mesh Panel Coating Zinc galvanised before welding (Pre Galv) A smaller diameter wire with a heavier layer of coating will not provide the same structural strength and resistance to cutting as a product made from heavier diameter wire, even though both will be show as being the same diameter. Some manufacturers measure their wire diameters after the coating is applied. Rigid welded mesh fence panels are almost always sold with a protective coating covering the wire – whether pre-galvanised (Galvanised Before Welding), Galvanised After Welding (GAW), Zinc-Alloy coated or plastic coated. Whenever possible, you should check that the steel wire being used by the fence panel manufacturer is of a good grade and traceable back to an ISO 9001:2015 accredited source to ensure consistency and adherence to material specification and tolerances. As with all steel products, the quality and durability of the finished product results from stating with a good material and that’s largely a factor of the wire manufacturing process. Here are some points to consider if you want a welded mesh fence that will remain fit for purpose throughout a long life cycle: Quality SteelĪll welded mesh fence panels start as coils of steel wire. There are many factors that will distinguish a mesh panel fence capable of providing security and a long service life from those that can’t. Unfortunately, that’s far from the reality. Looking at the most popular mesh designs, it’s easy to assume that there is little to choose between them on paper, they look much the same and share similar wire spacings, reinforcing folds and wire sizes. The design lends itself to applications where through-visibility, installation speed and low cost are primary requirements. Welded mesh fencing has grown in popularity over the past few years and is widely available from a variety of suppliers. Why choose welded mesh fencing from Jacksons?
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