How to distinguish between light round steel and ribbed steel bar Various reinforcement symbol repre

The differences are as follows:

Corresponding to Qingguang round steel HPB, it is suitable to use small diameter for distribution ribs, structural ribs, and stirrups.

It is more suitable for hooks, rings and other connectors that may withstand power. (H: Hot rolled, P: Bright Circle, B: Steel bar, the following number is the yield strength.)

Eigenvalues in MPA, such as HPB235 and HPB300<>).

For ribbed steel HRB, it is more suitable for longitudinal stress ribs of load-bearing members, but not for hooks, lifting rings and other connectors that may bear power. (h: hot-rolled, r:

ribbed, B: rebar, the following number is the yield strength eigenvalue, the unit is MPa, such as HRB335, HRB400).

Hello landlord. HPB (English abbreviation of hot-rolled round steel bar) is a light round steel bar, which is divided into HPB235 according to the yield strength, and the surface of HPB335 steel bar is smooth, so it is called light round steel bar.

HRB (abbreviation) is ribbed steel bar, according to the yield strength, ordinary hot-rolled ribbed steel bar is divided into HRB335, HRB400, HRB500 steel bar surface has a threaded rib, so it is called ribbed steel bar.

hpb300。

Plain round bars are finished steel bars that have been hot-rolled and naturally cooled, and are made of mild steel.

and ordinary alloy steel.

It is mainly used for reinforced concrete and prestressed concrete structures.

It is one of the most widely used steel varieties in civil engineering and construction projects. Millimeter diameter of steel bars, mostly rolled into wire rods.

A diameter of 12 40 mm is generally a straight strip 6 12 meters long. Class I steel bar (Q235 steel.

Steel bars) are rolled into a smooth circular cross-section, ** form of buried disc circle, diameter is not more than 12mm, length of 6m 12m.

Plain round bars are finished steel bars formed by hot rolling and naturally cooled, which are pressed by low carbon steel and Pufu Dongtong alloy steel at high temperatures, mainly used for reinforcement of reinforced concrete and prestressed concrete structures, and are one of the most widely used steel varieties in civil engineering and construction projects.

In civil drawings, round bars and rebars.

The beats are as follows:

Rebar is widely used in civil works such as houses, bridges, roads, etc.

Construction. From highways, railways, bridges, culverts, tunnels, flood control, dams and other public facilities, to the foundations, beams, columns, walls, and slabs of housing construction, rebar is an indispensable structural material. With the deepening of China's urbanization, the vigorous development of infrastructure construction and real estate has a strong demand for rebar.

A: All of them are reinforced concrete structures.

with steel. It can be used as a steel bar under tension and compression.

Ribbed steel bars are different from plain round steel bars.

Answer: 1. Each type of steel bar (including the same ribbed steel bar) has its own physical properties and chemical properties.

2. Specifically used in the project ribbed steel bar (the shape coefficient of the steel bar is taken and the concrete occlusion force is good, and the anchorage of the steel bar.

It's good, but there is no need for a 180° hook. Optical round steel bar (the shape coefficient of the steel bar is worse than that of the concrete bite force of the ribbed steel bar, and the anchorage of the steel bar is longer than the ribbed steel bar. And set up a 180° hook, the hook is straight for 3D.

However, the hook and lifting ring should be made of HPB300 steel bar, and it is strictly forbidden to use cold-worked steel bar.

Ribbed steel bars are used as the main stressed steel bars, and their grip and wrapping force with concrete are better. The round steel bar is mainly used for stirrups, used as a fixed longitudinal steel bar and plays the role of shear resistance and punching resistance.

Ribbed steel bar is a secondary steel and is mainly used for the force (main reinforcement) of buildings, while round steel is a primary steel, which is mainly used for stirrups of buildings, acting on fixing the main reinforcement together and applying common force.

Excel does not have a built-in special symbol. Personal habits, ribbed steel bars, light round steel bar symbols are , respectively

1. Round steel bar: that is, round steel without ribs on the surface, generally used for plate reinforcement and stirrups;

2. Ribbed steel bar: that is, steel bar with crescent shape on the surface, which is mostly used for stressed components such as beams.

Round steel bars HPB300 grade and ribbed steel bars HRB335, HRB400, HRB500 grade steel bars can be used as concrete components. However, in the field of modern architecture, as buildings are getting bigger and taller, it is the general trend to use high-quality and high-strength materials at home and abroad.

Therefore, the HPB300 grade of the light round steel bar is suitable for using small diameter to make distribution ribs, structural ribs, stirrups, etc., and is more suitable for hooks, rings and other connectors that may bear power; The ribbed steel bars HRB400 and HRB500 grades are more suitable for the longitudinal stress ribs of load-bearing members, and are not suitable for hooks, lifting rings and other connectors that may bear power.