Los-AngelesWelded square pipeThe market is turbulent

announcer:hp256HP158312377 release time:2022-01-18 12:45:27

In order to ensure the stability of the perforation performance and chemical properties of the billet of the square tube, the technical regulations shall be strictly implemented in the operation of the circular furnace, the abnormal conditions shall be handled in time and recorded, and the follow-up posts and quality management department shall be notified in time for handling.

Forging has many advantages in improving the plasticity of q355b square tube and improving the quality of steel, because the cast state of forged metal can be broken when forging q355b square tube. Therefore, there are forging workshops in some q355b square tube factories.

Los-Angeles.After chemical pickling, the square tube can be well protected by electrolysis. These are simple ways to prolong the service life of the square tube, We only need to treat according to these, so that the square tube can bring us great help in the use process. The cold galvanized square tube is the principle of cold galvanizing on the square tube used to make the square tube have corrosion performance. Different from hot-dip galvanizing, cold galvanizing coating is mainly carried out according to the electrochemical principle. Therefore, it is necessary to ensure the sufficient of zinc powder and steel, resulting in electrode potential difference, so the steel surface treatment requirements are very high.

The welding process of square tube is analyzed. The square tube is produced and processed at room temperature with strip steel as raw material. Square pipe can be divided into straight seam welded pipe, square pipe and spiral welded pipe. Due to the different uses of welded pipes the standards of welded pipes are summarized in turn: galvanized q355b square pipe for low-pressure fluid transportation, and the standard number is gbt3091-2008. Representative materials: Q235A, q235bq345b, etc. It is mainly used for conveying water, gas, air, oil and heating hot water or steam,Los-AngelesGalvanized square pipe 4040, and its purpose is limited to general low pressure fluid.

.The q355b square tube rolled from the strip steel through process treatment is generally to unpack, flatten, curl and weld the strip steel to form a round tube, and then cut it to the required length. Nowadays,Los-AngelesDN150 galvanized square pipe, the forming of q355b square tube has solid bending and empty bending. The bending degree of q355b square tube shall not be greater than 3mm per meter, the bending is compacted, and the internal and external rollers and the internal and external walls of the tube blank are compacted in both directions during the actual bending.

Square tube is a kind of square tube, which is rolled by strip steel after process treatment. Many kinds of materials can form a square tube body. It is used for what purpose and where. Most square tubes are steel tubes, mostly structural square tubes, decorative square tubes and building square tubes. Generally, the strip steel is unpacked, leveled, crimped and welded to form a circular tube, which is rolled into a square tube and then cut to the required length. Usually 50 pieces per bag.

Classification of surface treatment square pipe is divided into hot-dip galvanized square pipe, electro galvanized square pipe, oiled square pipe and pickled square pipe according to surface treatment.


Los-AngelesWelded square pipeThe market is turbulent



After the square pipe is produced, the surface treatment is generally carried out, that is, the scale rust, dirt and attachments on the surface of the square pipe are removed. Those that cannot be treated by physical treatment should be treated by chemical treatment.

In recent years, large-diameter seamless square tube plays a good role in economic development. Because there are many types of large-diameter seamless square tubes, the continuous casting process of large-diameter seamless square tubes is also different. What are the specific steps of the continuous casting process of large-diameter seamless square tube? As the name suggests, square tube is a kind of square tube type. Many materials can form square tube body. Its medium is used for what purpose and where it is used. Most square tubes are steel tubes which are unpacked, leveled, crimped and welded to form round tubes, Then the round pipe is rolled into a square pipe, and then cut into the required length. Generally,Los-AngelesHot dip galvanized spiral steel pipe, 50 square tubes per package are mostly in large specifications in terms of spot, and 10100.8 - 5~~ 50010-2 square tubes are divided into structural square tubes, decorative square tubes, building square tubes, mechanical square tubes, etc. according to their uses.

Performance index analysis of square tube - hardness is an indicator to measure the hardness and softness of metal materials. At present, the hardness method is commonly used to measure the hardness in production. It uses the indenter with fixed geometry to measure the hardness value of the metal material surface tested under fixed load according to the degree of hardness.

Scheme customization.There are many forms of heating furnace, which can rotate slowly, the blank is loaded along the diameter direction of the furnace bottom from the inlet, and can be heated and homogenized to the specified temperature when it is used at the outlet. The production process of seamless square tube is relatively slow, and the heating operation especially needs patience. Because if the heating operation is not standardized, cracks, folding and eccentricity on the inner or outer surface of the tube blank will only produce waste products and defective products.

High hardness square tubes mainly bear fatigue load, so they must have high hardness. Therefore, quenching, surface quenching or chemical heat treatment shall be carried out, followed by low-temperature tempering treatment.

Functional index analysis of square tube - angular plasticity refers to the power of plastic deformation (permanent deformation) without destruction of square tube data under load.


Los-AngelesWelded square pipeThe market is turbulent



2 before slicing. Highlight: push your hand straight up and down without bending and tremor. Don't know when it's down. Take a constant speed and hand power to stabilize it. Don't slice or cut it completely.

market.The service life has a great impact on the isotropic performance of the square tube. The use of secondary refining technology (including vacuum refining, ESR and ladle powder spraying) can improve the purity of the square tube, especially reduce the content of harmful impurities in the square tube, which is beneficial to improve the performance.

Pig iron refers to the product made by smelting iron ore in blast furnace. It is mainly used for steelmaking and square casting. Put the cast pig iron in the melting furnace to obtain cast iron (liquid), and cast the liquid cast iron into a cast square pipe. This kind of cast iron is called cast iron.

High productivity of square tube: the efficiency of cold production of mechanical parts is very high, especially for parts with large batch. Cold production can be several times, several times or even hundreds of times higher than cutting. For example, the use of cold pin for automobile is twice higher than that of cutting. At present, cold pin automata is used to improve productivity. The productivity of table cooling automata is equivalent to that of 100 ordinary lathes or 10 shaft self-propelled machines.

Los-Angeles.Forging has many advantages in improving the plasticity of q355b square tube and improving the quality of steel, because the cast state of forged metal can be broken when forging q355b square tube. Therefore there are forging workshops in some q355b square tube factories.

In different environments, the use efficiency of square tubes is different. According to the quality of square tubes, we will conduct progressive research on them, hoping to develop better square tubes. No matter what environment we will make square tubes suitable for use. Then, what is the role of shot blasting and sand blasting in each other's pipe? Next, let's introduce it to you.

Therefore, Q345A is usually not preheated. However, it should be preheated because it cools quickly. Once 20# steel was cracked by J422 welding. If the plate thickness is more than 70mm, there is a great risk of not preheating.