Steel angles bar is mainly used for building, ship building, bridge, power device, vehicle and civil furniture manufacturing, Steel angles bar: standard & grade& materialQ235,(it is the same as SS400,ST37-2,S235JR)size20x20x2.5mm-200x200x20mmnomal length6m, 9m, 12m or as customers' requestSurfaceBright,polishedapplicationconstruction,communications steel tower.civil or agricultural machine making ...