As we all know, steel has become an indispensable metal material in the construction industry, including carbon steel, steel profiles, rebar and other steel materials with better load-bearing capacity. Do you know what the different cross-sections of steel profiles do? Do you know why rebar is threaded?

In this article, let Baowu take you to explain one of them - why does the steel bar have threads?

Rebar is a ribbed steel bar on the surface, also known as ribbed steel bar, usually with 2 longitudinal ribs and transverse ribs evenly distributed along the length direction. The hot-rolled ribbed steel bar is divided into three grades: HRB335 grade II, HRB400 grade III and HRB500 grade IV. .

So why are steel bars ribbed?

There are two main reasons for the existence of threads:

The first is to increase the frictional force of the steel bar, so that its surface is no longer so smooth, which can increase the stability of the building and the fixation of the building during the use of the building;

The second is the threads on the steel bars, which can produce a common stress effect with the cement and the concrete, so that the steel bars and these concretes can be better stabilized together, and only in this way can we see what we usually see The load-bearing capacity of the building is more perfect, thus reaching a standard of safety protection.

In the process of building a house, a lot of steel bars and a lot of concrete will be used, but these concretes cannot be used alone, they need to be used together with these steel bars, and these threads can make these The concrete becomes more cohesive and resists these external forces.

Therefore, the threads on these rebars are not an aesthetic decoration, but are produced for the safety needs of the building.

Because rebar has good compressive ability, strong impact resistance and easy welding characteristics, it is widely used in civil engineering construction such as houses, bridges and roads. As large as highways, railways, bridges, culverts, tunnels, flood control, dams and other public facilities, as small as building foundations, beams, columns, walls, slabs, and rebar are indispensable structural materials.

The above is the reason why rebar has threads. If you want to know more, please pay attention to Baowu at any time.