What is pickled and oil steel and how to remove?

Pickled and oiled steel is a type of steel that has been treated to remove rust and scale through an acid pickling process, followed by the application of oil to prevent further oxidation and corrosion. To remove the oil from pickled and oiled steel, you can use solvents like mineral spirits or degreasers, applying them with a cloth or sponge. For a more thorough cleaning, hot soapy water can also be effective, followed by rinsing and drying the surface completely. Always ensure proper ventilation and safety measures when using chemical cleaners.