PPGL (Pre-Painted Galvalume) thiab PPGI (Pre-Painted Galvanized Iron) nplooj ntawv yog ob qho tib si coated steel khoom siv hauv kev tsim kho thiab kev tsim khoom. Qhov sib txawv tseem ceeb ntawm ob qhov lus dag hauv cov khoom uas lawv tau coated nrog.PPGL nplooj ntawvyog coated nrog kev sib xyaw ntawm txhuas thiab zinc, uas muab kev txhim kho corrosion kuj piv rau PPGI nplooj ntawv. Qhov no ua rau cov ntawv PPGL haum rau siv nyob rau hauv ib puag ncig uas corrosion yog ib qho kev txhawj xeeb, xws li cov ntug hiav txwv dej. Ntawm qhov tod tes, PPGI cov ntawv yog coated nrog zinc, uas muab kev tiv thaiv corrosion tab sis tsawg dua li kev sib xyaw ntawm txhuas thiab zinc siv hauv PPGL nplooj ntawv. Hauv cov ntsiab lus, qhov sib txawv ntawm PPGL thiab PPGI cov ntawv nyob rau hauv hom txheej lawv muaj, nrog PPGL muab kev tiv thaiv corrosion zoo tshaj vim nws cov txheej txheem txhuas-zinc.
PPGI hlau
