Businesses in the iron and steel sector produce, process, distribute or supply ferrous metals and products made from them. They may serve construction, engineering, manufacturing, infrastructure and fabrication customers, as well as members of the public undertaking smaller projects. Materials commonly supplied include structural steel sections, sheet and plate, reinforcing bar, tubes, pipes, wire, mesh and iron castings, in a range of grades, sizes and finishes. Many firms offer services such as cutting, drilling, bending, machining, profiling and preparing metal to specified dimensions. Some manufacture components or finished items, including beams, brackets, gates, railings and parts for machinery. Steel stockholders typically keep materials in stock for collection or delivery, while manufacturers may work from drawings or technical specifications.