Reinforced high-strength square steel pipe

The utility model discloses a reinforced high-strength square steel pipe, and relates to the technical field of building materials, the reinforced high-strength square steel pipe comprises a steel pipe body, the steel pipe body is hollow, cover plates are arranged at the two ends of the steel pipe body, a rotating rod is arranged in the middle of the steel pipe body, the rotating rod is rotatably connected with the cover plates, and bolts are fixedly arranged on the side, located on the cover plates, of the rotating rod; a plurality of groups of external threads are arranged on the rotating rod, and a plurality of groups of supporting mechanisms are arranged between the rotating rod and the steel pipe body; the supporting mechanism comprises a supporting block rotationally arranged on the rotating rod in a sleeving mode, a limiting mechanism is arranged between the supporting block and the steel pipe body, the external threads are sleeved with a limiting block, the limiting block is in threaded connection wit