Product description and application of square pipe

Kristen Song

Square pipe is a hollow square section of light thin-wall steel pipe, also known as steel cooling bent. The square pipe has good mechanical properties, weldability, cold and hot working properties and corrosion resistance, and has good low temperature toughness. Widely used in construction, machinery, power engineering and other industries.

Product description of square pipe

Square pipe is a hollow square section of light thin-wall steel pipe, also known as steel cooling bent. It is Q235 hot rolled or cold rolled strip or coil as the base metal through cold bending processing and then through high frequency welding made of square section shape size of the section steel. In addition to the thickening of the wall, the corner size and the flatness of the edge of the hot rolled extra-thick wall square pipe reach or even exceed the level of the resistance welding cold-formed square pipe. Good comprehensive mechanical properties, weldability, cold, hot working properties and corrosion resistance, with good low temperature toughness.


Main properties of square tube


Hardness: This is a complete indicator of how hard and soft a metal is. At present, the method of hardness determination in production is normal

The most commonly used is the indenter hardness method, which uses a certain geometry of the indenter under a certain load to be pressed into the test

On the surface of a metal material. Of course, the hardness of the tube can be measured according to the degree of being pressed into it: now

The most common methods are Brinell high concentration, Vickers hardness, Rockwell hardness and some very easy methods.

Plasticity: Plasticity refers to the metal material under the action of load, will produce a certain plastic change, and this change

It will not have certain damage properties.

Fatigue: The above mentioned flexibility, hardness and strength are all preferred mechanical properties of metals under static load

Pointer. In fact, in reality, a lot of machine parts love you to start working under cyclic load, and here

Under such environmental conditions, the parts will have a certain degree of fatigue. There is impact toughness: the square tube is the maximum speed of the load on the parts is called the impact load, the metal in the impact load to resist the ability to damage, this is called impact toughness.

Strength: This refers to the metal material under the action of static load will resist damage properties. Because of the way the load works

It's compression, bending, stretching and so on. So strength is also divided into compressive strength, shear strength, tensile strength and so on.

In fact, there is a certain relationship between various strengths, so that generally more tensile strength can be used as the most basic strength pointer.

Use of square pipe

The purpose of the square tube construction, machinery manufacturing, steel construction projects, shipbuilding, solar power stents, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, the boiler construction, highway railings, housing construction, pressure vessel, oil tank, bridge, power station equipment, Lifting transport machinery and other higher load welding structural parts, etc.


Service environment and performance of square pipe


Square pipe is just a name for square pipe, which is a steel pipe with equal side length. Square pipe is strip steel through the work

Artistically processed and rolled. Square pipe has welded pipe square pipe and seamless square pipe these two aspects of the difference. Seamless square tube is a kind of tool

There are long rows of steel without any joints on the periphery, with a good distinction between hollow sections, a large number of square pipes are used

The pipes that carry the fluid.


According to the different uses of square pipes, square pipes can also be divided into structural square pipes, architectural square pipes or decorative square pipes

Equal square tube, different uses, the square tube is not the same. So at work must be careful to distinguish.

Or the consequences will be very different. There are also many different functions that can be realized in many different industries

For example, square tube can be used in construction, machinery manufacturing, solar power generation bracket, iron and steel construction projects

For such purposes as agriculture, shipbuilding, electrical engineering or machinery for airports and chemicals. As society grew larger

Almost all industries use square tubes. Square pipe support rate is also increasing.

The temperature of ordinary square pipe is only below 350 degrees. If the user does not know the situation

Condition, and long time in the use of high temperature and high pressure, the square pipe under the action of high temperature flue gas and steam, on

Will be particularly prone to corrosion and serious oxidation phenomenon, if this is the case, it must be required that the square tube must have a ratio

Strong oxidation resistance and high corrosion resistance.

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