H, R, and B are the first letters of hot-rolled, Ribbed, and Bars respectively.
Rebar can be divided into three categories
according to strength: HRB300E, HRB400E, HRB500E, HRB600E, etc.
The thread specification range of rebar is generally 6-50mm. We usually involve more 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 32mm, 36mm, 40mm, and so on.
Generally, the fixed length of rebar is 9m and 12m, among which 9m long thread is
mainly used for normal road construction and 12m long thread is mainly used for bridge construction.
mainly used for normal road construction and 12m long thread is mainly used for bridge construction.