Coated products are just as they sound a carbon steel product that is dipped, quenched, annealed, or even electrically charged to coat the surface. One of the most common coated Products is galvanized. Galvanized usually goes through a hot dip process called a zinc bath that coats the steel and can be covered in a desirable coating of your choice by weight. These are commonly revered to with the following designation G40, G60, G90 etc. As the number increases so does the coating of zinc and its corrosion resistance.  Galvanized coatings as high as G240 have been produced.