Deformed steel bar yog lub npe nrov ntawm kub dov ribbed steel bar. Qib ntawm cov khoom kub-kuav los tiag steel tuav muaj HRB thiab qhov tsawg kawg nkaus taw tes ntawm qib. H. R thiab B yog thawj tsab ntawv ntawm peb lo lus kub dov, ribbed thiab tuav raws.
Kub dov ribbed steel tuav tau muab faib ua peb qib: Qib II HRB335 (qub hom: 20MnSi), Qib III HRB400 (qub hom: 20MnSiV, 20MnSiNb, 20Mnti) thiab Qib IV HRB500.
Ntsia hlau xov hlau yog ib hom hlau uas yuav tsum tau siv rau lub tsev cov khoom saum nruab nrab loj. Lub hauv paus ntsiab lus ntawm cov ntsia hlau xov hlau feem ntau yog ua raws li qhov yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua los ntawm kev tsim qauv engineering, nrog rau cov txheej txheem kev ua tau zoo lossis cov khoom siv dag zog raws li qhov ntsuas tseem ceeb.
