ZYW11 series symmetric increases in three roller coiling machine is earmarked for bending sheet metal forming equipment for general use. Roll two machines under a fixed location, provided by the bending torque motor, so as to the positive and negative rotation; Roll on the next roll of the two central location for symmetric movements campaign, the entire steel structure design, a good piece of rigid and durable. Multi-usage may end bending various steel products, a multi-purpose. Roll three large and medium-sized hydraulic fell to facilitate removal work.