Pickling production line : The pickling production line adopts the domestic advanced shallow tank turbulent pickling process. The acid solution is sprayed from both sides of the acid tank to form a strong turbulent flow in it. At the same time, the pickling production line refers to the latest international design and combines the domestic situation to carry out a new design for the pickling and tank structure. It is equipped with advanced acid recovery, circulation system and cascading system to improve the efficiency and environmental protection quality . The product specification is 2.5mm-4.0mm in thickness, 700mm-1300mm in width, and the annual production capacity is 1 million tons.