Also known as wire rod, usually of small diameter bar into the plate. Rod 5-19 mm in diameter in the range (typically 6-9 mm), the lower limit is the minimum size of hot-rolled steel sections. Many kinds of wire rod. Carbon steel wire rod low carbon steel wire rod in the line commonly known as soft, medium and high carbon steel rod known as a hard line. Rod mainly for drawing the blank, may also be used as building materials and processed into machine parts. Stainless steel wire rod for the manufacture of stainless steel wire, stainless steel spring wire, stainless steel forging steel wire and stainless steel wire rope. With the advances in production technology, there have been square, wire rod 
 Hexagonal, fan-shaped and other shaped cross-section rod; diameter limit has been expanded to 38 mm; disk weight from the original 40-60 kilograms to 3,000 kilograms. Since heat treatment after rolling development of new technology, the surface of the rod of iron oxide was thinned skin, tissue performance has been greatly improved. Rod is a relatively small diameter round bar, rolled into a plate product forms are available in a common site 6,8,10,12 mm in diameter, mostly with low carbon steel, generally not used for reinforcement of reinforced concrete structures , used for manufacturing steel sets, as well as small-diameter brick structure for the "brick reinforced." Before use rod steel straightener with material transferred straight down, while also removing oxide scales machines, also repeated in the bending tensile strength has improved to some extent. No straightener small site, using the winch wire rod straightening, if it is a direct pull is not desirable, too prone to plastic deformation, it should end with a pulley heavy hammer to control the tension