PPGI refers to pre-painted galvanized iron that undergoes a specialized coating process before it is fabricated into end-use products. This process involves the application of a protective layer of paint on a galvanized steel substrate. The galvanized layer provides corrosion resistance, while the paint layer adds an additional level of protection and aesthetic finish.

PPGI are widely used in construction, automotive assembly, household appliances and manufacturing of industrial equipment where corrosion resistance, aesthetics and durability are equally valued.

The manufacturing of PPGI steel involves several steps; including surface preparation, coating application, curing, and quality control checks. The sheets/coils are typically coated with a variety of paints and finishes; depending on the application requirements. Thus, these steps ensure the final product meets the industrial standards of both performance and appearance.

The industrial rollers that are adopted in the PPGI industry consist of coating applicator rollers, pinch rollers, feeder rollers, snubber rollers, turn rollers, bridle rollers, etc, throughout the entire production from uncoiling until coiling stage.