The steel angle lintel has good weldability, plastic deformation performance and certain mechanical strength are required in use. According to the different needs of the structure, various stressed members can be formed, and they can also be used as connectors between members.

The surface quality of steel angle bar is stipulated in the standard, and it is generally required that there should be no harmful defects in use, such as delamination, scarring, cracks, etc.

The allowable range of steel angle bar geometry deviation is also stipulated in the standard, which generally includes items such as bending degree, side width, side thickness, vertex angle, theoretical weight, etc., and it is stipulated that the angle steel shall not have significant torsion.