Ma Galvalume (GL) ma coils / ma sheet amagwiritsidwa ntchito pomanga, mafakitale opepuka, magalimoto, ndi zina. Pantchito yopanga zomanga, ma galvalume ironils / ma sheet amagwiritsidwa ntchito popanga mapangidwe padenga, kuyala ma grille, etc. Ma sheet ndi zitsulo zoyambira za PPGL zitsulo / ma sheet.