Angle steel, commonly known as angle iron, is a long strip of steel that is perpendicular to each other on both sides. China's import and export angle irons have a certain amount of bulk, mainly imported from Japan and Western Europe. Exports to the region are mainly Hong Kong, Macao, Southeast Asia, Latin America and Arabia.
The enterprises that export angle iron are mainly steel plants (rolling mills) in Liaoning, Hebei, Beijing, Shanghai, Tianjin and other provinces and cities. Most of the imported angle irons are large, small angle irons and special shape angle irons. Most of the export varieties are medium-angle irons such as No.6 and No.7.
The surface quality of angle iron is specified in the standard. Generally, there must be no harmful defects in use, such as delamination, crusting, cracks, etc. The allowable range of angular geometry deviation is also specified in the standard, generally including the degree of curvature, side width, edge thickness, apex angle, theoretical weight, etc., and specifies that the angle iron must not have significant torsion.
What are the angle irons used for? The angle iron can be composed of various force members according to the different needs of the structure, and is widely used in various building structures and engineering structures, such as transmission towers, cable trench brackets, power piping, warehouse shelves, and the like.
