This guide provides general information to assist facility owners and specifiers who select or specify powder coating systems to protect steel substrates from corrosion. It includes information about surface preparation and application procedures, and also about coating system durability and performance. Detailed descriptions of substrate selection and pretreatment are beyond the scope of this guide. Coating powder suppliers can provide advice regarding selection of specific primers and finish coats, and powder application and recovery equipment suppliers can assist with the selection of specific equipment.