The difference between HPB and HRB rebar:

1, the strength of the two steel bars is not the same, the strength of HPB will be higher, and belongs to the first grade steel, but HRB belongs to the second grade steel, so the strength will be lacking.

2, the two types of steel bars are not the same, HPB is a smooth steel bar, more suitable for use as a connection that can withstand power, and HRB is a ribbed steel bar, more suitable for use as a load-bearing member.

HPB(Hot Rolled Circular Steel Bar)

(HPB is the English abbreviation of Hot-rolled PlainSteel Bar), commonly known as wire rod, the diameter of 6-12 is the most common, including HPB235 and HPB300, nominal diameter of 6~22d/mm, 235 and 300 respectively refer to its corresponding yield strength.

Light round steel bar diameter 6.5 ~ 12 mm of steel bar, most rolled into rod; The diameter of 12 to 40 mm is generally 6 to 12 meters long straight strip. Grade I steel bar (Q235 steel bar) are rolled for smooth circular section, supply form is disk circle, diameter is not more than 12mm, length is 6m~12m.

In architecture, it is often used to make stirrups, board distribution bars, stirrups, wall reinforcement and so on.HRB(Hot Rolled ribbed Bar)

(Hot-rolled Ribbed -steelBar), the following number is the yield strength of the steel bar. For example, HRB500 refers to hot-rolled ribbed steel bars, the yield strength is 500MPa, and so on 335 is the yield strength of 335Mpa, 400 is 400MPa.

Secondary rebar (HRB335) is threaded rebar, diameter 12-25 is the most common. Tertiary rebar (HRB400 or more) is also threaded rebar, similar in diameter to secondary rebar, higher in strength, but the price is also high, and has been gradually promoted.

Used in beams, columns, shear walls, etc. No matter how large the diameter is, it is rarely used in civil construction, and is often used in mass concrete, such as hydraulic engineering.

Product information:

HRB335 steel bar refers to two-stage hot-rolled ribbed steel bar with yield strength of 335MPa.

The commonly used diameter of HRB335 steel bars is 10,12,14,16,18,20,22,25,28,32 mm, etc.

The original strength grade of the steel bar is divided into one grade, two grade and three grade according to strength; After the new specification came out, it was changed to the current level, and now there are HPB225, HRB335, HRB400,RRB400 and so on. HRB335 is the original secondary steel.

HRB stands for Hot-rolled Ribbed steel Bar, the number after is the yield strength of the steel bar. Secondary steel (HRB335) is threaded steel, 12-25 diameter of the most common, used in beams, columns, shear walls and so on. No matter how large the diameter is, it is rarely used in civil construction, and is often used in mass concrete, such as hydraulic engineering.

HPB300 is Grade one steel. HPB is the abbreviation of Hot-rolled Plain Steel Bar. These include HPB235 and HPB300, with nominal diametries of 6 to 12mm/d. 235 and 300 refer to the corresponding yield strength.

The standard yield strength of the steel bar HRB400 is 400MPa, and the design value is 360MPa.

1, HRB is the hardness value, meaning Hot-rolled Ribbed steel Bar, refers to the Rockwell hardness measurement method (HR) B scale, indicating that the hardness of the measured steel is how many HRB, the following number is the steel yield strength.

2, three levels of steel (HRB400 or more) is also threaded steel, similar in diameter to secondary steel, higher strength, but the price is also high, has been gradually promoted.

Theoretical weight

Diameter according to the British standard (ASTM A706 standard) production