Pickling in plumbing refers to the process of cleaning metal pipes by immersing them in an acid solution to remove scale, rust, or other contaminants from the internal or external surfaces. This process is commonly used for steel or copper pipes before installation, soldering, or coating to improve adhesion and corrosion resistance. Pickling helps maintain pipe cleanliness, prevent clogging, and ensure optimal flow rates within the plumbing system. After pickling, the pipes are usually rinsed and neutralized to remove any remaining acid, making them safe for use in potable water systems.
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