Thick steel phaj feem ntau yog ua los ntawm tib hom steel li nyias steel phaj. Thaum choj phaj, boiler phaj, automotive phaj, siab nkoj phaj, thiab ntau- txheej siab- lub nkoj siab phaj yog cov phaj tuab tuab, qee hom hlau, xws li tsheb nqaj hlau phaj (2.5-}} 10 hli tuab), phaj phaj (2.5-8 hli tuab), stainless hlau phaj, thiab cov phaj kub-resistant steel phaj yog nyias.
Hlau phaj kuj muaj cov khoom siv; tsis yog tag nrho cov hlau phaj yog tsim sib npaug. Cov ntaub ntawv sib txawv tuaj yeem ua rau cov ntawv thov sib txawv rau cov hlau sib txawv.
