PPGI ni icyuma gitwikiriwe (cyashyizwemo galvanize, aluminiyumu, nikeli, nibindi) gikoreshwa mu kuvura ubushyuhe (gukuraho amavuta, phosphating, aside chromic passivation), hanyuma gisizwe irangi, hanyuma gitwikirizwe ibintu bitetse.

Ibyiza: Ifite imbaraga za mashini nk'iza icyuma kandi yoroshye kuyishushanya, kandi ibikoresho by'umwimerere bifite imitako myiza kandi birwanya ingese. Igipfukisho gifite ubushobozi bukomeye bwo gufata neza kandi gishobora kugumana ibara rishya igihe kirekire.

Ikoreshwa: rikoreshwa cyane mu bwubatsi, ibikoresho byo mu rugoibikoresho byo mu nzu, ibikoresho rusange n'ubwikorezi n'ibindi bibuga.