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Steel Rebar as very important building material, is mainly used in highways, railways, bridges, utilities, buildings, municipal construction, reinforced concrete structures .
steel rebar is known as hot rolled ribbed bar. The hot rolled steel bars are made up of the lowest yield points of HRB and grade. H, R, B were hot-rolled (Hotrolled), ribbed (Ribbed), steel (Bars) three words in the first letter of the English alphabet. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.