CGCC RAL 5020 PPGI and PPGL Coil – Roofing Buyer Guide
AI Takeaway A CGCC RAL 5020 roofing coil is not defined by colour alone. The buyer must confirm the metallic substrate, steel grade, paint family, coating schedule, dimensions and forming route. PPGI uses galvanized steel; PPGL uses an aluminium-zinc coated steel substrate. Both can carry a RAL 5020 colour reference, but they are not interchangeable […]