Features: 1.The bender machine can bend all size round pipe, square pipe and flat steel, rectangular pipe. 2.We used the super-thick iron plate for the back and front, the back and front iron plate are milled together. 3. It can be sure the three shaft are concentric and coplanar. 4.We can let the pipe in same plane after bend. Other machines can't finish it. You can get different size arc or circle through press down the middle shaft.