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i beam Description: I beam, also called girder, is one kind of profiled bars which is strip profiled steel with the "I" shape sections. The specification is usually expressed by middle height (h)*bottom width (b) * middle width (d), for instance, "I 160*88*6", shows that I beam with 160mm bottom height, 88mm middle width, 6mm middle width.Use: can be widely used in various construction structures, bridges, autos, brackets, mechanisms and so on. Specification necessary for inquiries: product name, standard performed, materials, specification (geometry dimension), quantity, weight of bundle, handling time, length, measure ways.Steel grade: Q195-235; Q235B.Standard: GB/T 700-1988.Size: Height 80-360mm. Details in table please check our website.Length: 100-180mm height, 6mtrs.200-360mm height, 6/9/12mtrs.Packing: in bundles.Others: As well as Chinese standard size, we can also provide our unique sizes which are slight different in width, thickness, and theoretical weight in order to meet different demands on constructions. For more information, please check our catalogue in Jingta steel website