What is a threaded rod?

Threaded rod is a hot-rolled solid bar with discontinuous external threads. It can be connected by coupler.

In short, we can think of threaded rod as a relatively long rod with threads, which can extend along the entire length of the rod.

Origin of threaded rod

The origin of threaded rods can date from the 1970s. It was developed and patented by the Federal Republic of Germany and later introduced by the United States, Japan, Britain, and other countries. In the 1980s, threaded rods were developed vigorously and used in super-large buildings, frame structures, bridges and culverts, and other projects.

Development of threaded rod

The process of heat treatment and hot rolling is generally adopted for threaded rods. However, the following problems have occurred in production in recent years:

1. Because of the influence of the final rolling temperature, cooling water, water pressure, and production season, the performance of threaded rods with heat treatment fluctuates wildly.

2. The hot-rolled threaded rods have some problems such as low strength or plasticity.

These problems lead to the traditional heat treatment and the hot rolling process has been unable to meet the market demand, so with the development of the economy, enterprises specializing in the research and development and production of threaded rods in the market began to emerge. By adopting high-tech heat treatment technology, these enterprises have greatly improved the strength and performance stability of threaded rods. Due to the substantial increase in the strength of threaded rod, under the condition of equal strength requirements, the steel bar’s diameter is reduced, saving more than 30% of the steel. It has the social benefits of saving materials, reducing consumption, and reducing costs.

Application of Threaded rod

Threaded rod is widely used in large-scale water conservancy projects, continuous beams, and large-scale frame structures in industrial and civil buildings, large and medium span bridge of highway and railway, nuclear power plants, and ground anchors.

High-strength threaded rod application:

1. 650-1080Mpa high-strength threaded rod is widely used in prestressed parts, large-span buildings, and high-strength steel structures in construction projects.

2. 500-1275Mpa concrete with high-strength threaded rod can be widely used in all kinds of support, reinforcement engineering, concrete, and prestressed concrete engineering, such as coal mines, tunnels, highways, dams, deep foundation pits, slopes, and concrete, prestressed concrete works.

Threaded rod is very important in construction. It is not only widely used but also has the advantages of simple connection and anchoring, strong adhesion, safe and reliable tension anchoring, convenient construction, etc. It also saves rebars and reduces the area and weight of components. In addition, When threaded rods are used in the field of anchoring, according to the requirements of the anti-corrosion grade, they can form different anti-corrosion systems with couplers, nuts, plates, corrugated pipes, smooth plastic pipes, end caps, and so on.

Therefore, through a comprehensive understanding and knowledge of the rebar, we can not only maximize its advantages but also provide a safe and reliable working and living environment for people.