Hlau phaj yog lub tiaj tiaj steel phaj cam khwb cia nrog molten steel thiab nias tom qab txias.Nws yog ua los ntawm cov phaj tiaj tus lossis steel sawb, uas tuaj yeem txiav ncaj qha rau hauv cov duab plaub.Cov hlau phaj yog muab faib raws li cov tuab.Lub nyias steel phaj yog tsawg dua 4 hli (qhov thinnest yog 0.2 hli), cov phaj tuab tuab yog 4 ~ 60 hli, thiab cov phaj tuab ntxiv yog 60 ~ 115 hli.Steel daim hlau muab faib ua kub dov thiab txias dov raws li dov. Qhov dav ntawm daim ntawv yog 500 ~ 1500 mm;Qhov dav ntawm lub thickness yog 600 ~ 3000 hli.Cov phaj nyias nyias tau muab faib ua cov hlau zoo tib yam, cov hlau zoo, cov hlau alloy, lub caij nplooj ntoo hlav, cov hlau tsis muaj steel, cov cuab yeej hlau, cov hlau tsis muaj cua sov, cov kabmob hlau, cov hlau tsis muaj steel thiab cov hlau ntshiab hlau nyias;Raws li kev siv, muaj cov roj chim phaj, enamel phaj, mos txwv phaj, thiab lwm yam;Raws li cov txheej txheem saum npoo, muaj galvanized ntawv, tinned ntawv, txhuas plated ntawv, yas puas steel phaj, thiab lwm yam.