GP Corrugated Sheets (Galvanized Plain Corrugated Sheets) are steel roofing sheets formed with a corrugated profile and coated with zinc for basic corrosion protection. They are manufactured in various thicknesses, widths, and lengths as per standard specifications, providing strength, rigidity, and weather resistance for roofing applications. GP corrugated sheets are identified by their dimensions and thickness, with weight determined based on size and material.