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Cold bending steel
Cold bending steel according to the shape classification, can be divided into two categories, open and closed.
1) general opening cold bend steel with equal and unequal Angle, inside outside edge and edge Angle, equal and unequal channel steel, inner edge or outer edge channel steel, Z section steel, edge Z steel, special shaped opening sections, etc.
The Shape of Structure Stretch-Bending
2) silence silent form of cold bend section steel is welded section of cold bending steel, according to the shape of round, square, rectangular and abnormality. 
The Shape of Structure Stretch-Bending


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