Pickling is the first process the hot band coil undergoes when it arrives at the coating mill. There it is uncoiled and cleaned in a series of acid baths to ensure the proper surface for galvanizing. The steel is then side-trimmed to the customer's specifications for width. At the end of the pickle line process, the steel is re-coiled and ready to go on to the cold rolling mill. The pickle line is capable of handling two coils at a time.