You can find steel mesh from any ironmongers or blacksmith workshop. Steel mesh can also be picked up from your local scrap merchants or metalwork shops.
Steel mesh is often more durable and can provide better security and protection against physical damage, while aluminum mesh is typically lighter in weight, more resistant to corrosion, and easier to shape. The choice between steel and aluminum mesh depends on the specific needs and requirements of the project or application.
Stainless steel mesh can be purchased from a number of retail locations and online stores. Sears, Home Depot, and Amazon, for example, each sell this product.
Steel Reinforcement fabrics
Wikipedia has a good article on how mesh networking works. Another site that has information on mesh networking is LocustWorld. Project Byzantium and Nexu both have FAQs on mesh networking.
The unit weight of Steel Wire Mesh Q 221 typically depends on the specific dimensions and wire diameter used in the mesh. However, a common approximation for the unit weight of steel wire mesh is around 4.8 kg/m². For precise values, it's best to consult the manufacturer's specifications or relevant industrial standards.
There are several places to buy wire mesh depending on it's intended usage. DIY stores like B&Q and Wickes stock wire mesh for building and garden requirements. Amazon and eBay have that too, as well as mesh for kitchen and craft purposes.
Steel wool is an alloy of iron, with carbon content (and other elements) as needed for the particular characteristics, such as strength and brittleness. It is a spun mesh of steel wires, (again,) said mesh being designed for the particular application.
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Mesh hats are similar to baseball style hats/caps, except the back of the hat is made of a mesh material. Information on these hats can be found at sites such as Mesh Hat, Zazzle, and Polyvore.
A very low grade of steel bar or even large mesh steel wire is used in sidewalks.
Steel wire mesh is welded by spot welding which could be continuous or staggered, depending on the application and strength of joints required. Sometimes, they are fastened by screws to the frame which serves as retainer also.
Mesh backpacks can be found in [babareplica].