1. Threaded steel bar: hot rolled ribbed steel bar.

2. Smooth steel bar: The finished steel bar is made of low carbon steel and common alloy steel by high temperature pressing, and then naturally cooled after hot rolling.

Second, the characteristics are different.

1, threaded steel bar:

(1) has two longitudinal ribs and transverse ribs evenly distributed along the length direction.

② Produced by a small rolling mill.

2, smooth steel bar:

(1) is one of the most widely used steels in civil engineering.

(2) Most steel bars with a diameter of 6.5 ~ 12mm are rolled into wire rods; A straight rod with a diameter of 12 ~ 40mm is generally 6 ~ 12m long.

Extended data:

Rebar is widely used in civil engineering construction such as buildings, bridges and roads. From public facilities such as roads, railways, bridges, culverts, tunnels, flood control, damming and so on to building foundations, beams, columns, walls and slabs, rebar is an essential structural material.

With the deepening of urbanization and the vigorous development of infrastructure and real estate in China, the demand for rebar is increasing. China is the largest steel producer and trader in the world, and the introduction of rebar futures is of great significance to the domestic steel industry.

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