Khoom nthuav qhia:
Round steel yog cov khoom cylindrical steel, nws txoj kab uas hla tuaj yeem tsim tau ntau qhov sib txawv raws li qhov xav tau ntau lawm.Cov txheej txheem txheej txheem suav nrog kub dov, kos duab txias, forging thiab kho cua sov thiab lwm txoj hauv kev.Ntawm lawv, kub dov yog cov txheej txheem siv ntau tshaj plaws, uas tuaj yeem tsim cov hlau puag ncig nrog txoj kab uas hla loj dua.Cov txheej txheem kev kos duab txias tuaj yeem tsim cov kab me me thiab siab precision round steel.