Foldable concrete prefabricated part steel bar preformed hole forming die

The utility model relates to a foldable concrete prefabricated part steel bar preformed hole forming die which comprises three long-strip-shaped arc-shaped steel plates, the radian of each arc-shaped steel plate is smaller than 180 degrees, the two ends of the two sides of the inner arc face of each arc-shaped steel plate are respectively provided with a connecting plate in a welded mode, each connecting plate is provided with a pin hole, and the three arc-shaped steel plates form a round steel pipe. The connecting plates between the adjacent arc-shaped steel plates are overlapped up and down and the pin holes are through; and long through pin shafts are inserted into the pin holes of the connecting plates through which the three arc-shaped steel plates are vertically through in the longitudinal direction of the circular steel pipe. When one pin shaft is taken down, the die can be folded inwards, and when the die is disassembled, the die is folded inwards firstly, so that the outer wall of the die is separate