HartsfieldDN200 galvanized steel pipeSeveral common production schemes and their principles

announcer:hp256HP158312377 release time:2022-01-18 16:15:28

There are some defects in q355b square tube during stretching, which are caused by the following reasons. The common main reasons are as follows: select the appropriate q355b square tube material, and the commonly used materials in austenitic q355b square tube are 1Cr18Ni9Ti and 0Cr18Ni9Ti. During deep drawing, 1Cr18Ni9Ti is more stable than 0Cr18Ni9Ti and has better crack resistance. Therefore, the strip steel shall be leveled,HartsfieldPP square tube, trimmed, planed, surface cleaned, transported and pre bent.

Hartsfield.Hot dip galvanized square tube is a kind of square tube which is welded after using steel plate or steel strip to curl and form, the square tube is placed in the hot dip galvanized pool and formed through a series of chemical reactions; The production process of hot-dip galvanized square pipe is relatively simple, but the production efficiency is very high and there are many specifications and varieties, but this kind of square pipe needs little equipment and capital, which is more suitable for the production of small galvanized square pipe manufacturers.

Large diameter welded square pipe for low pressure fluid transmission, Standard No.: gbt14980-1994. Representative material: q235ab grade. It is mainly used to transport low-pressure fluids, such as water,HartsfieldRectangular hot dip galvanized square pipe, sewage, gas, air and heating steam.

.The standard number of spiral square pipe (standard of the Ministry of petroleum) for low pressure transmission is syt5037-2008. The representative materials are q235bq345b and other carbon steel materials. It is mainly used for low-pressure transmission of water, oil, natural gas, heating and other pipelines.

Soft blowing treatment of molten steel after calcium treatment can reduce residual inclusions in molten steel and better wrap MNS around al20 CAS and other cores.

The tensile test is to make q355b into a sample pull the sample to fracture on the tensile testing machine, and then measure one or more mechanical properties. Usually, only tensile strength, yield strength elongation after fracture and reduction of area are measured. Tensile test is the basic mechanical property test of metal materials. Almost all metal materials have specified tensile test as long as they have requirements for mechanical properties. Especially for those materials whose shape is not convenient for hardness test, tensile test has become the only means to test mechanical properties.


HartsfieldDN200 galvanized steel pipeSeveral common production schemes and their principles



Except for the thickening of the wall thickness, oil, gas and other fluids.

The difference between q355b square tube and Q345A is that there are fewer impurities s and P and better low-temperature impact performance. From the welding point of view, when the impurity elements in the base metal are less, it is good for welding hot crack.

technological innovation.The standard quantity of combustible and nonflammable square pipes is gbt97-1 (gbt97-199). The representative material is l245-l4 pipeline steel. Professional square pipes, square rectangular pipes, seamless square pipes galvanized square pipes and galvanized pipes are of high quality and low price. They are fire-resistant, waterproof, high temperature resistant, durable, safe and reliable. They are mainly used to transport combustible and nonflammable fluids with high requirements.

In the test, place the sample between two parallel plates and press it evenly to the flattening distance h specified in relevant technical conditions with a press or testing machine at a speed of no more than 60mmin.

Use classification square tubes are divided into: square tubes for decoration, square tubes for machine tool equipment, square tubes for mechanical industry, square tubes for chemical industry, square tubes for steel structure, square tubes for shipbuilding, square tubes for automobile, square tubes for steel beams and columns, and square tubes for special purposes.


HartsfieldDN200 galvanized steel pipeSeveral common production schemes and their principles



Square tube is the main type of square tube. It is also very popular in the square tube market. There are many people doing this kind of thing, so there are many in the competition. The future market potential is huge. We should grasp this information well. In addition, we must learn about relevant maintenance and repair!

Application process.Galvanized q355b square pipe for low pressure fluid transmission, gas, air and oil and add water or steam. The surface of square pipe shall be hot galvanized or cold galvanized.

. fake and inferior square tubes are easy to fold. Folding is a variety of broken lines formed on the surface of square tubes, and this defect often runs through the longitudinal direction of the whole product. The reason for the folding is that the fake and shoddy manufacturers pursue the rate, the reduction is too large, resulting in ears, folding occurs during the next rolling, the folded products will crack after bending, and the strength of the square tube will be greatly reduced.

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.

Hartsfield.At the same time, hanging heating shall be carried out during heating to reduce quenching deformation. For high-precision guide rail, gas nitriding or ion nitriding shall be carried out to reduce deformation; Square tubes have outstanding performance in all aspects of performance. We will also test them in this regard when making square tubes more durable. What outstanding performance do square tubes have in mechanical properties? Next, I'll introduce it to you.

Today, with the development of the world, all fields are coming rapidly, which makes the demand for square tube higher and higher, and the requirements of customers for square tube higher and higher. Now we are studying a new square tube. The following mainly introduces the performance of square tube in tensile strength.

Shot blasting and sand blasting are widely used in repair and shipbuilding industry. However, compressed air is used. Professional square pipe, square rectangular pipe, seamless square pipe, galvanized square pipe,HartsfieldGalvanized square pipe 50, galvanized pipe has high pressure resistance grade, good waterproof performance fire and high temperature resistance, strong overload capacity, corrosion resistance, radiation protection and long service life. Of course, it is not shot blasting, so it is necessary to use high-speed rotating impeller. In the repair and shipbuilding industry, shot blasting (small steel shot) is mostly used in square pipe pretreatment (rust removal before coating); Sand blasting (mineral sand is used in repair and shipbuilding) is mostly used in formed ships or sections to remove the old paint and rust on the square tube and repaint it. In the repair and shipbuilding industry, the main function of shot blasting and sand blasting is to increase the adhesion of square tube coating paint.