Combined turnover box

A composite turnaround box mainly comprises a crossed integral case plank which is cut by planes, four projections bend towards vertical direction to enclose four vertical straight edges and every straight edge is connected at the vertical seam crossing to generate an open square box, four corners of the open box are connected with two adjacent vertical straight edges through angle connection bars, the integral case plank comprises layers of plates with different material, the four open corners of the open box have wrap angle and bottom bars are fixedly connected around the bottom edge of the box, the utility model has the advantages that the utility model has reasonable structure, adapts the angle connection bar of recessed structure or layers of box plates of overlapping structure and can be flexibly made to be different sizes and dimensions to adjust to different requirements through connecting and installing composite structure by angle connection bars. The utility model also has easy production, good intensity, damp-proof and dirty-proof and the edge angle is not easy to abrade.