Angle steel tolerance

　　Different side lengths of angle steel have different allowable deviations,

　　The allowable deviation value is between -0.4mm and -1.4mm

　　Hot rolled equilateral angle steel (GB9787) stipulates:

　　No.5 angle steel (50 × fifty × 5) Allowable deviation (mm): edge width - ± 0.8, edge thickness - ± 0.4.

　　Other allowable deviations (mm):

　　Model: 2-5.6: Edge width - ± 0.8 Edge thickness - ± 0.4

　　Model: 6.3-9 Edge width - ± 1.2 Edge thickness - ± 0.6

　　Model: 10-14 edge width - ± 1.8 edge thickness - ± 0.7

　　Model: 16-20 edge width - ± 2.5 edge thickness - ± 1.0

　　The allowable lower tolerance for the thickness of angle steel varies depending on the length of the short side,

　　The short side length is less than or equal to 56 millimeters, and the allowable negative deviation in thickness is -0.4 millimeters,

　　The short side length is less than or equal to 90 millimeters, and the allowable negative deviation in thickness is -0.6 millimeters,

　　The short side length is less than or equal to 140 millimeters, and the thickness allows for a negative deviation of -0.7 millimeters,

　　The short side length is less than or equal to 200mm, and the allowable negative deviation in thickness is -1.0mm,

　　If the short side length is greater than 200 millimeters, the allowable negative deviation in thickness is 1.4 millimeters