Abstract: A flat structural part for a motor vehicle body with the flat structural part forming, for example, a hood, a cover, or a door of the motor vehicle and being reinforced by pipes along a side of the edges, with the pipes being arranged at a distance from an outer covering of the structural part that may partially reach around the pipes either from above or below or from above and below, with the retaining pipes being connected with an edge area of the outer covering. The outer covering and retaining clips enclose an approximately wedge-shaped space that tapers off in a direction of the edge, with a space between the pipe and outer covering having a size that permits a free passage of a spray jet aimed thereat.