Products used in bridges, multi-storey plant, parking, office buildings, apartment buildings, gymnasium and other large-scale buildings. In modern architecture, has been widely used in Britain, France, the United States, Japan and other developed countries. It is light weight, thin wall, strong rigidity, not fragile, no mud. Because of the obvious concave-convex double wave on the outside of the tube body, the connection of the steel tube is embossed tightly and firmly without tripping. After pouring on site, it has very strong binding force with concrete. Compared with the general solid slab, the utility model has the advantages of excellent function, light weight, large span, small deflection, no column cap, good safety and low comprehensive cost, thereby improving the construction clearance and increasing the use and sales area. Compared with the existing common beam-slab structure, solid slab without beam and prestressed concrete slab in China, it can save 5% -7% steel, 10% -30% concrete and vertical water consumption.