Cold bend section steel is one of the many varieties of steel, a certain width of the strip, in normal temperature conditions through a set of vertical arrangement of rollers, deformation, step by step to conform to the requirements of the use of shape, size, and determine the corresponding length, cut to size.
 
Cold bending steel according to the shape classification, can be divided into two categories, open and closed. 

(1) general opening cold bend section steel with equal and unequal Angle, inside outside edge and edge Angle, equal and unequal channel steel, the edge or outside edge channel steel, Z section steel, edge Z steel, special shaped mouth section and so on. 

 
(2) held the silent type section of cold bend section steel is welded of cold bending steel, according to the shape of round, square, rectangular and abnormity.