Construction steel refers to a kind of steel which is specially used in the construction industry and participates in the construction. In the construction industry, steel bar, steel pipe and other construction steel are the most common. Steel bar is an indispensable framework for the construction of concrete, and steel pipe is an important role in the construction of scaffolding and other worker operating sites. Construction steel products in the market are also classified into grades and varieties, today we will mainly introduce the classification of construction steel grades according to processing methods.
According to the processing method, the steel bar stopping grade can be divided into five varieties: hot-rolled steel bar, heat treatment steel bar, cold-drawn steel bar, cold-drawn low carbon steel wire and stranded steel pipe.
Hot-rolled steel bar is a kind of steel bar which is naturally cooled after hot-rolling disposal. It is composed of low carbon steel and common alloy steel, and is tied and supported at high temperature. It is the most important reinforcement for reinforced concrete and prestressing concrete structure, and is also the most commonly used waste steel bar in civil engineering.
Hot-rolled steel bars are treated by quenching and tempering at high temperature to form heat-treated steel bars; cold-drawn steel bars are made by stopping certain stretching at room temperature; cold-drawn low-carbon steel wires are cold-drawn low-carbon steel wires that produce cold-worked hardening after drawing. The stranded pipe is a steel wire product which is made up of several steel wires.
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