HPB300/HRB335 Reinforcement Rebar

HPB300 grade: The yield strength of steel bars in this grade is 300MPa, with high plasticity and toughness, suitable for general structural reinforcement and stirrups. HRB335 grade: The yield strength of this grade of steel bars is 335MPa, with high strength and good ductility, suitable for general structural reinforcement and stirrups, especially for projects with high strength requirements. According to the production process, there are hot rolled steel bars (H) and cold rolled steel bars (C). Hot-rolled steel bars are divided into smooth round steel bars (HPB300) and ribbed steel bars. The common brands of hot rolled ribbed steel bars are HRB400, HRBF400, HRB400E, HRBF400E, HRB500, HRBF500, HRB500E and HRB600. HPB300 (Grade I) is a common steel bar with a diameter of 6-12mm , c ommonly used in the production of stirrup, wall reinforcement, etc. HRB335 (Grade II) is a threaded steel with a diameter of 12-25mm , c ommonly used in bridges, dams, houses and other large and medium-sized concrete structures in the beam, column, shear wall. HRB400 (Grade III) is similar to HRB 335, but is stronger and more expensive. It is o ften used in special buildings such as villas. HRB500 ( Grade IV ) is widely used in large prestressed buildings, such as roofs, crane beams, etc.