Screw thread steel
Deformed steel bar is the common name of hot-rolled ribbed steel bar. The grade of ordinary hot-rolled steel bar consists of the minimum yield point of HRB and grade. H, R and B are the first letters of Hotrolled, Ribbed and Bars.
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Key words: deformed steel billet coil screw
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Deformed steel bar is the common name of hot-rolled ribbed steel bar. The grade of ordinary hot-rolled steel bar consists of the minimum yield point of HRB and grade. H, R and B are the first letters of Hotrolled, Ribbed and Bars.
The hot-rolled ribbed steel bar is divided into three grades: Grade II HRB335 (old brand 20MnSi), Grade III HRB400 (old brand 20MnSiV, 20MnSiNb, 20Mnti) and Grade IV HRB500.
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