Prior to shop painting, what is the first step regarding the steel surface?

The first step prior to shop painting that concerns the preparation of the steel surface involves wire brushing. This process is critical as it removes any contaminants such as rust, dirt, grease, or mill scale from the surface of the steel. Proper surface preparation is essential to ensure that the paint adheres effectively and provides the necessary protection against corrosion and other environmental factors.

Wire brushing helps to create a clean surface that allows the subsequent coating layers, such as primers and paints, to bond properly. If the surface is not adequately prepared, the paint may peel or fail to provide sufficient protection, leading to accelerated deterioration of the steel.

Following wire brushing, other steps such as conducting inspections or applying a primer can take place, but these actions are contingent upon having a clean steel surface to begin with. Thus, wire brushing is a foundational step that sets the stage for effective surface treatment and coating application.