Hot Rolled Pickled Coil (HRP coil) refers to a type of steel coil that has undergone a specific pickling process after hot rolling. The pickling process involves the removal of surface impurities, such as oxide scales and mill scale, from the hot rolled steel coil. Pickling process refers to that after hot rolling, the steel coil is immersed in an acid solution, typically a dilute solution of sulfuric acid or hydrochloric acid. This acid bath removes the surface impurities, resulting in a clean and scale-free surface.

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