Common types and sizes of steel bars

Common models and specifications of steel bars can be organized according to different classifications. The following is a detailed summary:

1. Ordinary steel bars

Model: plain round steel bar

Specifications and sizes: The diameter is generally between 6-40mm, including 6.5, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32 and other sizes.

Main uses: general concrete reinforcement or some reinforced structures in ordinary buildings and projects.

2. HRB series steel bars

HRB335 steel bar

Model: Ribbed steel bar

Specifications and sizes: diameters are 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50mm.

Length: Generally 9-12m.

Weight: between 0.222-3.853kg/m.

Tensile strength grade: 335MPa

Usage: high-end construction, large equipment manufacturing, etc.

HRB400 steel bar

Model: Ribbed steel bar

Specifications and dimensions: Same as HRB335, diameters are 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50mm.

Same length and weight range as HRB335.

Tensile strength grade: 400MPa

Purpose: Similar to HRB335, but more suitable for occasions requiring higher strength structures.

3.Seamless steel bars

Model: Seamless steel bars, divided into HRBF, HRBF400E, HRBF500E and other models according to quality grade.

Specifications and dimensions: Larger diameter and longer length, the specific size is determined according to specific needs.

Usage: Bridges, large factories and large buildings, etc.

4. Recommended nominal diameter

The recommended nominal diameters of steel bars are 8, 12, 16, 20, 25, 32, and 40 mm.

Please note that the above information is for reference only, and selection must be made based on engineering requirements and design specifications for specific use.