Mertal oil and gas pipelines dedicated bending machine is the use of a number of new technologies: 1 on a roll by reverse rolling deformation method to eliminate the process of deflection of the roller 2 on both ends of the press-roller using multiple sets of cylinder pressure. , fixed cylinder piston rod, cylinder lifting seat and drive the roll movements, effective use of space, increasing material utilization, greatly reducing the overall weight of the equipment, 3. products discharged from inside the material out of the stent material, the stent without turning inverted reset, enhanced security, 4. product discharge using automatic cylinder to drive (the company another patent technology), suitable for assembly line.