I-PPGI ipuleti lensimbi elinamekwe (i-galvanized, zinc aluminized, nickel-plated, njll.) ukwelashwa kwamakhemikhali okungaphezulu (ukwehlisa, ukuphosphating, i-chromic acid passivation), bese kuhlanganiswe ngopende, bese kuba nemikhiqizo ebhakwayo.

Izinzuzo: inakho kokubili amandla omshini wepuleti lensimbi nokusebenza okulula ukubumba, futhi izinto eziphilayo zinokuhlobisa okuhle nokungagqwali.Ukwemboza kunokunamathela okuqinile futhi kungagcina umbala wenoveli isikhathi eside.

Isicelo: esetshenziswa kabanzi ekwakheni, izinto zikagesi zasendliniifenisha, izinsiza zomphakathi nezokuthutha kanye neminye imikhakha.