steel pipe knowledge

Square tube is a kind of material widely used in industrial construction industry, which is in great demand. There are many square tube products on the market, and the quality is uneven. Pay attention to the selection method when selecting:

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.

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.

At present, 16Mn seamless square pipe technology has been extremely mature, and there are corresponding product standards and various types of application technologies.

The production process of high-frequency welded pipe mainly depends on the variety of products.

In the prior art, a two-step method is used to connect q355b rectangular tubes.

The main component of the galvanized square pipe is zinc, which is easy to react with the oxygen in the air, so what will the color of the galvanized square pipe turn white? Next, we will explain it to you in detail.

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.

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.

The outer diameter accuracy of thick walled square rectangular pipe is determined by human, and the result depends on the customer. It depends on the customer's requirements for the outer diameter of seamless pipe, the operation and accuracy of steel pipe sizing equipment, and the steel pipe sizing process system.

By using thinner and stronger structural and cold forming steels like high-strength, advanced high-strength and ultra-high-strength steels, you can save on production costs thanks to easy bendability, cold-forming properties and surface treatment. Additional savings in welding work and filler materials can also be achieved when material thickness is minimized.

It is inevitable that the surface of the rectangular tube will be coated with oil, which will affect the quality of rust removal and phosphating. Next, we will explain the method of oil removal on the surface of the rectangular tube below.

Galvanized square pipe has good performance, and the demand for galvanized square pipe is very large, so how to straighten the galvanized square pipe? Next, let's explain it in detail.