In order to ensure that in the operation there is not serious running deviation of steel strip,and make the normal operation of production line, in the appropriate location the alignment machine are arranged. And each of the alignment machine is equipped with independent hydraulic station, and placed near the executive components, so to avoid mutual interference of the hydraulic system and reduce the servo response lag and interference caused by tube pass by long and each alignment device is equipped with dual servo control to ensure the effect of centering; The sensor detection type adopts inductance. Servo valve adopts imported brand. EPC adopts CCD probe structure, CPC online offset display, and has alarm function.

Four rollers wet skin pass mill can effectively improve the surface quality of products, eliminate yield platform, improve the cold punching performance of products, set up a rapid roll changing car, reduce roll changing time, adopt hydraulic push system, automatically open the roll seam when passing welding seam, the whole non-smooth control distance is short, the system is stable and reliable.

The pretreatment adopts powerful electrolytic degreasing. In order to prevent the nozzle from blocking, a filter is set at the inlet of each circulating pump in the water brush washing section. In the washing section of the water brush, the three-stage overflow scheme is adopted to save water consumption. After degreasing, the dryer is equipped to thoroughly dry the steel strip. The dryer has driving device.

Vertical roll coating passivation is adopted. Chemical treatment solution was applied on both sides of steel strip to improve the adhesion and durability of steel strip surface and the durability of coating. The roller coating structure can avoid the discharge of the passivation liquid, and ensure the uniformity of the passivation liquid on the strip surface. The utilization rate of passivation liquid is high. Rolling coater has the function of quick opening, avoiding welding seam. The heat source for passivation drying comes from natural gas burner heating.