The machine is made up of bending and shaping worktable, oil-heating groove, board rod, shaping belt, and filling belt. It features reliable function, safe operation, and high efficiency. After being filled up, profile and softened in the heating groove, and then it can be bent and finalized to the design of semicircle you need whose diameter is between 500mm and 1800mm or arch of any type whose diameter is not more than 3000mm on the worktable. Further it can use different shaping belt according to different profile.