Steel fixing device for derusting machine for building steel

The invention relates to the technical field of building steel, and discloses a steel fixing device for a derusting machine for building steel. A support column is movably connected above a lower base; an upper base is movably connected above the support column; a movable groove I is formed in the lower base; a movable plate is movably connected above the movable groove I; a connection spring is movably connected to the left side of the movable plate; a support rod is movably connected to the left side of the movable plate; a fixed clamping handle is movably connected to the right side of thesupport rod; and a movable groove II is formed in the upper base. According to the steel fixing device for the derusting machine for the building steel, the movable groove II and movable derusting devices are used cooperatively, the movable derusting devices are clamped at the two sides of a hinge, and capable of moving in the movable groove II to carry out derusting on the square steel, and morethorough derusting can be