Fabrication is the process of constructing products by combining typically standardised parts using one or more individual processes. For example, steel fabrication is the production of metal structures using a range of processes such as cutting, bending and assembling. Metal fabrication will often form a complete assembly made from smaller sub assemblies for use with readily available standard sections. This is achieved with computer-aided designs (CAD) that are often programmed using computer numerical control (CNC) technology which communicates directly with machinery on the factory floor. By using these technologies, the quality standards of production are increased and higher quality assemblies are produced. This ensures a more accurate and quicker steel erection time on site, which is vital in high volume production, reducing cost for the customer through better material utilisation and faster assembly times.