Industries in the machinery manufacturing subsector specialize in making machinery designed for particular applications. Some important processes for the manufacture of machinery are forging, stamping, bending, forming, and machining used to shape individual pieces of metal. Processes, such as welding and assembling, are used to join separate parts together. Although these processes are similar to those used in metal fabricating establishments, machinery manufacturing is different because it typically employs multiple metal forming processes in manufacturing the various parts of the machine. Complex assembly operations are an inherent part of the production process.