Qhov tseeb, cov kav hlau steel kuj muaj cov khoom sib txawv, xws li cov kav dej galvanized. Feem ntau hais lus, cov kav dej zoo li no yog siv los thauj cov pa roj, cua sov, thiab lwm yam, uas tuaj yeem ua kom zoo corrosion kuj. Tsis tas li ntawd, nws cov ntaub ntawv kuj muaj ntau hom hlau sib txawv. Cov hlau yog galvanized, thiab qhov saum npoo corrosion kuj yuav raug txhim kho.
Cov ntaub ntawv tseem ceeb yog feem ntau carbon steel los yog hlau alloy. Tau kawg, ob lub hlau no kuj muaj ntau hom. Koj yuav tsum xaiv raws li kev xav tau tshwj xeeb. Cov hom hlau sib txawv kuj tseem yuav cuam tshuam rau tus nqi ntawm cov kav dej steel, yog li ua tib zoo saib rau kev xaiv cov hlau.
Cov pa roj carbon ntsiab lus ntawm cov kav hlau yog siab, thiab nws cov hardness kuj yuav nce, tab sis plasticity thiab toughness yuav raug txo. Yog li ntawd, nws yog ib qho tsim nyog yuav tau xav txog qhov kev ua tau zoo ntawm cov yeeb nkab galvanized xaiv. Yog tias cov ntsiab lus manganese ntxiv, cov yeeb nkab steel hlau tuaj yeem tsim. Ntxiv cov ntsiab lus xws li titanium kuj tuaj yeem txhim kho nws tag nrho lub zog thiab hardness, yog li ua tib zoo mloog rau cov khoom siv hlau.
