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Steel pickling is a kind of acid pickling done for surface treatment. Strong acids are used for this purpose. This treatment changes the outer layer of steel. As a consequence, the steel becomes clean, smooth, and highly resistant to corrosion. Pickling is a common process to achieve or restore the shine and brightness of the surface. This explains why stainless steel is composed of at least 10.5% chromium. This component forms a protective passivation layer that keeps the steel surface immune to air or moisture. Why Steel Pickling? Let us now study why steel or stainless steel should be pickled. Pickling is done to season the surface to make it highly corrosion-resistant. The outer surface of the material usually gets affected during the manufacturing process. As a result, the output often gets visible damage or might contain significant impurities. The types of damages and impurities are listed below: Formation of scale layers during heat treatment Formation of annealing colors duri...