Flat is (plates, tubes, profiles, wire), one of four varieties of steel. Based on cross-sectional shape, flat sections and sub-sections of complex simple section steel (special steel). The former refers to the square steel, round steel, flat steel, angle steel, hexagonal, etc; the latter refers to the beams, channels, rails, steel window frames, bent steel and so on. Square steel - square section steel, hot-rolled and cold-rolled two kinds of points; hot rolled square steel side length 5-250mm; cold-drawn steel side length 3-100mm. Round - round section steel, rolled, cold-forging and drawing three, rolled round the diameter 5-250mm, which commonly do 5-9mm wire drawing materials, called wire; due to disk Supply also called hot-rolled wire rod. Forged round straight Mody thick, with a shaft blanks. 3-100 mm diameter cold drawn bar, high dimensional accuracy. Flat - wide 12-300mm, thickness 4-60mm, rectangular cross-section and slightly pure steel edge. Flat steel products can be finished, you can also do thin slab and Roll blank sheet welded pipe used. Angle - grading edge angle and unequal angle two kinds. Angle specifications indicated by side and edge thickness dimensions. Angle specification is usually produced 2-20, that the side length of several centimeters. As the 5th edge angle refers to the side length of 5cm (50mm) of the angle. The same number of different angles often 2-7 edge thickness. Hebei Wire Factory: http: //www.sfbiantie.com/index.php/text/sfbiantie/1233/cn/1233/1233.html flat iron manufacturers: http: //www.sfbiantie.com/index.php/news /sfbiantie/1226/cn/1226/1226.html article unlimited business people finishing release!