C-shaped tightening combined type steel formwork body device

The utility model discloses a C-shaped tightening combined type steel formwork body device. The C-shaped tightening combined type steel formwork body device comprises a frame body assembly, a formwork assembly and a tightening butt joint assembly. The combined steel frame has the advantages that the steel frame single bodies are combined to form the combined steel frame body, when the two steel frame single bodies are in butt joint, the horizontal planes of the C-shaped steel rings at the ends of the two steel frame single bodies can be attached together, the contact area of the connecting position is increased, and therefore when the steel frame single bodies are fixed in a welding mode, connection firmness can be guaranteed, and the service life of the steel frame is prolonged. Corresponding splicing can be carried out according to the height of a concrete pile needing to be constructed, meanwhile, the clamping plates are welded to the two ends of each set of C-shaped steel ring, the channel steel pipes are