I-PPGI yipleyiti yentsimbi egqunyiweyo (i-galvanized, i-aluminized zinc, i-nickel-plated, njl.) unyango lwekhemikhali yomphezulu (i-degreasing, i-phosphating, i-chromic acid passivation), emva koko ifakwe ngepeyinti, kwaye emva koko imveliso yokubhaka.

Izinto eziluncedo: inamandla omatshini wepleyiti yentsimbi kwaye kulula ukuyibumba ukusebenza, kwaye izinto eziphilayo zinezinto ezilungileyo zokuhombisa kunye nokumelana nomhlwa.I-coating ine-adhesion eyomeleleyo kwaye inokugcina umbala wenoveli ixesha elide.

Isicelo: isetyenziswa ngokubanzi kulwakhiwo, izixhobo zasekhayaifenitshala, izibonelelo zoluntu kunye nezothutho kunye namanye amabala.