Nothing less. No exceptions.
High quality steel without any defects. It is made to order by producers or purchased from stockholder's inventory. Prime steel includes full mill certification since it has passed all manufacturing inspections.
Surplus steel that is leftover for various reasons but is otherwise perfectly usable and possibly even of high quality. Obtained due to an over-order, miscut, canceled project, location closure or it was simply overstocked.
Ideal for applications that don't require the stringent quality controls that prime metal does. A few dings or aesthetic flaws don't matter when your material is getting painted, coated, or going non-visible application.
To create hot dipped galvanize products the steel strip is run thru a molten zinc bath. Following this process, the zinc is cooled and solidified on to the strip. The strip is then recoiled.
Zinc is applied electrolytically to the steel substrate. Zinc particles in a bath are electrically charged and the substrate receives the opposite charge, and opposites attract.
This process applies molten aluminum to the steel strip in a like manner to HD Galv. Aluminized steel is used heat resistant applications, such as automotive exhaust systems.
Following HD GALV coating process, the strip is immediately run through an annealing furnace and then recoiled. This step anneals the zinc coating to the steel strip. Iron in the base metal combines with zinc coating.
Similar to HD Galv process, but the molten bath is comprised of 55% Zinc and 45% aluminum. Galvalume has superior corrosion resistance and is primarily used in metal building applications.