PPGI ni isahani isize icyuma (galvanised, aluminium zinc, plaque ya nikel, nibindi) kuvura imiti yubutaka (degreasing, fosifatique, passivasi ya chromic), hanyuma igasiga irangi, hanyuma ibicuruzwa bitetse.

Ibyiza: ifite imbaraga zumukanishi wibisahani byibyuma kandi byoroshye gukora imikorere, nibikoresho kama bifite ibyiza byo gushushanya no kwangirika. Igifuniko gifite imbaraga zikomeye kandi gishobora kugumana ibara rishya mugihe kirekire.

Gusaba: gukoreshwa cyane mubwubatsi, ibikoresho byo murugoibikoresho, ibikoresho rusange no gutwara abantu nizindi nzego.