Any engineering equipment has its role in the long process of development, the role of machinery and equipment is increasingly rich, and even can be said to be indispensable. So, in the beginning of the manual, how are these equipment developed? But also in what kind of background generated?
     For steel straightening machine, it is the construction of steel scaffolding maintenance machinery. The first time there is no such equipment, and later the scale of domestic construction has expanded year by year, bamboo scaffolding was quickly replaced by construction steel pipe. However, the steel pipe after a long period of sun and rain, there will be rust corrosion, wall thinning, in the construction demolition and handling prone to bending, reducing the service life, resulting in a series of security risks. After that, many construction companies to spend a lot of manpower and resources to do the maintenance of steel, but the effect is unsatisfactory. In this context, the steel straightening machine began to slowly appeared in the prototype. And later through the continuous development of its role more and more obvious, has become a construction site indispensable one of the mechanical equipment.