KrongKaohKongThick wall hot-dip galvanized rectangular pipeCommon faults and solutions

The iron filings and burrs on the cutting section shall be completely removed with a file or appropriate tools to prevent the iron filings and burrs from scratching the rubber O-ring and other accessories when connecting another part.

In case of doubt about the strength of solid q355b square tube,KrongKaohKongStainless steel 25 square tube, and the measured average strength is required to be not lower than the design value or the specified value. When the requirements are not met, the core drilling sampling method can be used for verification.

KrongKaohKong.According to metallographic classification, the protective layer of seamless q355b square tube can be chiseled and measured.

.Square pipe is an important type of square pipe, which has great similarities with seamless steel pipe, but it is different. Square pipe is of great use in square pipe, most manufacturers need to do this function, not only painting but also galvanizing. Zinc will precede others The base material of the square tube is corroded. If painting is not for you, it will cost you two money. If painting, it is recommended that you brush the zinc rich primer, because you brush other paints, it will corrode quickly, and then continue to corrode your zinc coating, so as to achieve the top coat on the zinc rich primer. In fact, you should brush the zinc rich primer before galvanizing

Sample length L & asymp; D (D is the outer diameter of the pipe). When the outer diameter is large, the length l shall not exceed 100mm. When the outer diameter is less than 20mm, l = 20mm.

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.

Requirements for samples samples can be taken from metal pipes with qualified appearance. Generally, sawing is adopted.

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,KrongKaohKongGalvanized pipe manufacturer, and on the basis of this square tube, 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.

Surface adhesion resistance is an important feature of square tubes. At present, square tubes are mostly used for transportation, so the adhesion resistance makes square tubes not stick during transportation.

Supply chain quality management.To change the required line shape of q355b square tube, it is necessary to forge the impact force of q355b square tube hammer or the pressure of hydraulic press, and can also enhance the malleability of q355b square tube that is, the soil environmental properties are more complex. In addition the performance of changing the shape without cracks.

The first is the influence of external conditions. It mainly depends on the medium characteristics and temperature around the square pipe and whether the medium around the pipe is corrosive. Because the corrosivity of the medium is closely related to the microorganisms contained in the soil. And if it is a long-distance pipeline, the temperature of the environment where the pipeline is located will also affect the corrosion of the square pipe. If the temperature is high, the corrosion speed will also be accelerated, the corrosion speed will be slowed down.

Cold formed hollow section steel (American Standard) for cold pressed Q345B square tube (national standard) structure carbon steel cold-formed circular section and pressure welded Q345B square tube and seamless Q345B square tube (European standard) non alloy fine grain cold formed welded hollow structural profile (Japanese standard) angle steel Q345B square tube for general structure galvanized q355b square tube for low pressure fluid transmission, Standard No.: gbt3091-2008. Representative materials: q235q235bq345b, etc. it is mainly used to transport water, gas, air, oil and water or steam. It is a special product manufacturing enterprise integrating R & D, and service. It has long been a professional square tube,KrongKaohKongPrice of hot dip galvanized square pipe, square tube, seamless square tube, galvanized square tube and galvanized tube. Its purpose is only limited to general low-pressure fluid.

The inner and outer walls of the pipe shall retain the original surface without any processing.

property right.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, 1Cr18Ni9Ti material should be selected as much as possible.

Square tube plays an important role in the rapid economic development. The functions of square tube are different, and its characteristics are also different. Square tube has strict standards. There are many welding processes and advantages of square tube. Let me show you the welding process and advantages of lower tube.

Functional index analysis of square tube - commonly used are square tube Brinell angle (HB), Rockwell angle (hrahrbhrc) and Vickers angle (HV) Equal angle is a gauge needle to weigh the soft and hard level of metal data. In the current life, the angle method is rarely used to determine the angle. It uses the indenter with a certain number and shape to determine the angle value of the metal data surface being tested under a certain load according to the level.

KrongKaohKong.Stainless steel q355b square pipe for mechanical structure, Standard No.: gbt12770-1991. Representative materials 0Cr 1cr1 00cr19ni 1Cr18Ni 0cr18ni11nb, etc. are mainly used for mechanical parts and structural parts such as machinery, automobile, bicycle, furniture, hotel and restaurant decoration.

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.

Q355b square tube is a kind of hollow square section steel square tube, also known as hollow cold-formed section steel. It is a section steel with square section shape and size made of hot-rolled or cold-rolled strip or coil plate after cold bending and high-frequency welding.