Variables such as material choice and finishing or coating will be adjusted according to the intended application of the wire mesh and the environment to which it will be exposed. Wire mesh that has been welded is generally available 4 different ways—galvanized, hot dipped galvanized, PVC coated or made of stainless steel. Types of materials commonly used for wire mesh include steel, stainless steel, brass, aluminum and more. Steel and stainless steel are popular in many applications due to the strength and durability of steel, as well as its heat resistance. Furthermore, stainless steel is corrosion resistant which allows the material to be used in applications where exposure to moisture is a factor. Compared to the other types, stainless steel wire mesh is the most expensive but also the strongest and longest lasting option. It is mostly used in industrial settings, and makes up the majority of material used for fencing systems. Wire mesh can be adapted fairly easily to suit different applications and can changes in terms of mesh sizes, configuration, wire gauges and finish. Galvanizing is recommended, especially for heavy duty applications, as it greatly increases the strength of the wire mesh and protects the metal from environmental factors. Computer controlled welding equipment can be used and is advantageous for applications in which mesh opening accuracy is a factor.