A chain-link fence (also referred to as a wire netting fence, wire-mesh fence, chain-wire fence, cyclone fence, hurricane fence, or diamond-mesh fence) is a type of woven fence usually made from galvanized or LLDPE-coated steel wire. The wires run vertically and are bent into a zig-zag pattern so that each “zig” hooks with the wire immediately on one side and each “zag” with the wire immediately on the other. This forms the characteristic diamond pattern seen in this type of fence.

Weld-mesh is the term given to the kind of barrier fencing that is manufactured in square or rectangular mesh from steel wire, welded at each intersection. It is usually affixed to steel uprights. Weld-mesh is a relatively cheap fencing solution but has the advantage over chainlink wire of not bending so easily and not being easily cut. It is therefore ideal where a low level of security is required but where chainlink fencing is too easily overcome. Weld-mesh is also sometimes used in reinforcing the reinforced cement concrete works.

Expanded metal is a form of metal stock made by shearing a metal plate in a press, so that the metal stretches, leaving a diamond shaped voids surrounded by interlinked bars of metal. The most common method of manufacture is to simultaneously silt and stretch the material with one motion. It is often shortened to exmet. “Exmet” however is a registered trademark in the US for expanded metal produced by expanded metal company ltd. Expanded metal is also referred to as perforated metal. It is a large part of the metal industry and plays a key role in metal fabrication. Expanded metal is used in gates and in outdoor furniture (e.g. benches or fencing). It is usually used for guarding to prevent contact with hot surfaces or machinery. Expanded metal is often used for architectural details and finds use in security applications such as in the walls of a sensitive compartmented information facility because, in a heavier grades it is difficult to breach without heavy cutting equipments or explosives.

In woodworking and construction, a nail is a pin-shaped object of metal (or wood called a treenail) used as a fastner, peg to hand something; or sometimes a decoration. Generally nails have a sharp point on one end and a head on the other. Formerly wrought iron, today’s nails are typically made of steel, often dipped or coated to prevent corrosion in harsh conditions or improve adhesion. Ordinary nails for wood are usually of a soft, low carbon or “mild” steel (about 0.1% carbon, the rest iron and perhaps a trace of silicon or manganese). Nails for concrete are harder with 0.5% – 0.75% carbon. Size: 1″ – 6″