You probably meant pickled steel. Pickled steel is steel that has been washed in acid to remove surface corrosion before enter the next processing step in a factory (e.g. forging. stamping, rolling). The process of washing the steel in acid is called pickling. Once pickled the steel is rinsed in water to remove excess acid.
yes
Hot rolled steel must be descaled by pickling in acid with a lime water rinsebefore it can be cold finished
After welding for instance stainless steel tubing the welds are pickled in order to remove the discoloration of the heat.
Acid pickling means pickle the acid.
pickling
Certain varieties of cucumbers have been bred specifically for use in pickling. By using these varieties, the home pickling enthusiast will end up with a crisper and more flavorful result. If growing cucumbers at home, be sure to select seeds that are labeled as "pickling" or "good for pickling" on the seed packet. Good choices for pickling cucumbers include: Pioneer, National Pickling, Saladin, Bush Pickling Liberty Hybrid, Ballerina, Boston Pickling, and Eureka Hybrid.
Pickling lime used to be an accepted method of adding crispness to pickled cucumbers. The USDA no longer recommends use of pickling lime. Pickling lime is alkaline and must all be washed off of the cucumbers or it can result in a less acidic pickling solution. It the pickling solution is not acidic enough it can allow botulism an environment in which to grow. Botulism cases have been linked to this situation and this is the reason it is no longer recommended.
Vinegar
Microorganisms are not a good thing when it comes to pickling. Generally you want to kill off microorganisms when pickling.
The process is usually referred to as pickling, or descaling.
Because the acid in the pickling liquor reacts with the aluminum and spoils the pickles.