How long is it?

How long does it take to use it?

Is it twisted or something?

If the angle iron is small, you can consider baking it with a gas cutting gun. Fix one end of the angle iron, and the area of the curved part can be baked larger. Then pull it in the right direction with a wrench or some fixture. There must be a bulge after pulling, and then knock it flat with a hammer.

. If the angle iron is not twisted, it is only the deformation caused by several bends, or it is baked, and the angle points to the concave edge like an isosceles triangle, or it is baked to the concave edge along the straight line of the curved edge. After baking, hammer it into place. Or you can fix the two ends of the angle steel in a curved place and use a jack to support it. The effect is ok. If the angle steel on the equipment or steel structure is bent, either replace it or bake it. If it can't be baked, cut off one side of the angle iron and pull it over for welding. The living can't be suffocated by birds. There is no calibration equipment. These are some methods I use in my practical work, and there are many methods according to the situation.