Steel Knowledge

How to Select High Quality Square Tube?

Square tube is a kind of material commonly used in the industrial construction industry, with a large demand. There are many square tube products on the market, and the quality is uneven. Attention should be paid to the selection method when selecting: Read More

How thick is the galvanized square tube to meet the design requirements of steel structure?

It is well known that the quality of galvanized square and rectangular tubes and the installation method directly affect the stability of steel structures. At present, the support materials on the market are mainly carbon steel. The raw materials of carbon steel are generally Q235 and Q345, which... Read More

Application of Galvanized Rectangular Pipe in Construction Engineering

As a common decoration construction material in our modern life, galvanized square tubes can be said to be widely used. Because the surface is galvanized, the anti-corrosion function can reach a better standard, and the anti-corrosion effect can be better played in the construction project, so th... Read More

Surface heat treatment of 16Mn square tube

In order to improve the surface hardness and wear resistance of 16Mn rectangular tubes, surface treatment, such as surface flame, high-frequency surface quenching, chemical heat treatment, etc. should be carried out for the rectangular tubes. Generally speaking, most of the high and medium freque... Read More

How is LSAW steel pipe made?

The longitudinal submerged arc welding pipe is produced by rolling the steel plate into a cylindrical shape and connecting the two ends together through linear welding. LSAW pipe diameters typically range from 16 inches to 80 inches (406 mm to 2032 mm). They have good resistance to high pressure ... Read More

How to remove the rust of 16Mn seamless square pipe during long-term storage?

At present, 16Mn seamless square pipe technology has been extremely mature, and there are corresponding product standards and various types of application technologies. Its application fields are also extremely wide. Due to the influence of weather and environment, the surface of 16Mn seamless sq... Read More

Do you know the production process of high frequency welded pipe?

The production process of high-frequency welded pipe mainly depends on the variety of products. A series of processes are required from raw materials to finished products. The completion of these processes requires various mechanical equipment and welding, electrical control and detection devices... Read More

Connection method of q355b square pipe

In the prior art, a two-step method is used to connect q355b rectangular tubes. First, the square tube is pressed out of the joint, and then the joint of the two tubes is connected with a docking mechanism. This requires a lot of human resources and has low R & D and production power. The te... Read More

Fabrication technology of Q355D low temperature square tube

Domestic petroleum, chemical and other energy industries need a large number of low-temperature steel to design and produce various manufacturing and storage equipment such as liquefied petroleum gas, liquid ammonia, liquid oxygen and liquid nitrogen. According to China’s 12th Five Year Pla... Read More

Why does the color of galvanized square pipe turn white?

The main component of the galvanized square pipe is zinc, which is easy to react with the oxygen in the air. What will the color of the galvanized square pipe turn white? Next, let’s explain it in detail. The galvanized products should be ventilated and dry. Zinc is amphoteric metal, which ... Read More

How to solve the corrosion problem of galvanized square pipe?

Most of the square pipes are steel pipes, and the hot-dip galvanized square pipes are coated with a layer of zinc on the surface of the steel pipes by a special process. Next, we will explain in detail how to solve the corrosion problem of the galvanized square pipes. Read More

How to remove oxide scale on large diameter square pipe?

After the square tube is heated, a layer of black oxide skin will appear, which will affect the appearance. Next, we will explain in detail how to remove the oxide skin on the large-diameter square tube. Read More
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