Reach or even exceed the level of resistance welding cold formed square pipe. The size of R angle is generally between 2-3 times of the wall thickness. R angle square pipe of the size required by customers can also be produced according to customers' needs; Square pipe is a kind of long steel with hollow section and no joints around. It is a square pipe formed by four sides of seamless pipe mold. Square pipe has hollow section, professional square pipe, square rectangular pipe, seamless square pipe, galvanized square pipe, galvanized square pipe, strict inspection and quality assurance. The preferential activity is in progress. Welcome to consult. A large number of pipes are used for conveying fluid. They are mainly used in conveying, hydraulic support and mechanical structure, Medium and low pressure, high pressure boiler tubes heat exchange tubes, gas, oil and other industries. It is stronger than welded and will not crack.
During the storage of square tubes, pay attention to the stacking layers of square tubes to avoid local stress at the tube end caused by too many layers, resulting in radial plastic deformation and layer damage of square tubes. It is recommended that the stacking layers of smooth pipes refer to apirp 5l1-2009 Recommended Practice for railway transportation of square pipes for pipelines or apirp 5lw-2009 Recommended Practice for ship and sea vessel transportation of square pipes for pipelines. It can also be determined by test or implemented according to the safe stacking height of square pipes. The stacking layers of pipes shall be implemented according to GBT 23257-2009 polyethylene layer of buried steel pipelines.
Guapiles.Square pipe for diamond core drilling (gb3423-8) is a square pipe for drill pipe, core rod and casing for diamond core drilling.
The modification of Ca, rare earth and other trace elements on inclusions changes the structure, morphology and physical properties of inclusions in steel, spheroidize and refine inclusions in steel, the square tubes produced by q355b square tube factory are mainly used in tap water engineering the steel pipe whose ratio of outer diameter to wall thickness is less than 20 is called square pipe. At present, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. For transportation: water supply and drainage. For gas transmission: gas, steam and liquefied petroleum gas. do
The general delivery length of q355b square pipe is 4000mm-12000mm, mostly 6000mm and 12000mm. Q355b square tube is allowed to deliver short and non fixed length products not less than 2000mm, or in the form of interface tube, but the Demander shall cut off the interface tube when using it. The weight of short length and non fixed length products shall not exceed 5% of the total delivery. For q355b square tube with theoretical weight greater than 20kgm, it shall not exceed 10% of the total delivery. The bending degree of q355b square tube shall not be greater than 2mm per meter, and the total bending degree shall not be greater than 0.2% of the total length. The square tube is classified according to the production process: hot rolled seamless square tube, cold drawn seamless square tube, seamless square tube and square tube.
How about the tensile strength of square pipe: square pipe has good tensile strength, which makes square pipe stand out in the field of steel pipe. The square tube has great advantages in high temperature, high pressure and even high strength environment. What are its characteristics? We analyze it one by one: tensile strength (& sigma; b) the strong force (FB) borne by the sample during tensile breaking, and the unit is nmm2 (MPA).
When cutting, and then cut it after it is fixed.
There are 11 sets of MPM and 2 sets of MRK pipe mills in the world. Strength refers to the function of q355b square tube data being destroyed under static load (appropriate plastic deformation or fracture). Because the action forms of load include tension, contraction, meandering, shear and so on,GuapilesWholesale hot dip galvanized square pipe, because the strength is also divided into tensile strength compressive strength, flexural strength, shear strength and so on. There is often a definite connection between various strengths. Long term square tube, square rectangular tube, seamless square tube, galvanized square tube and galvanized tube have no turnover to avoid price difference, and the price is 20% higher than the market price! The price of more than one ton is higher! In normal use, tensile strength is often taken as the fundamental strength gauge needle.
Galvanized q355b square pipe for low pressure fluid transmission, Standard No.: gbt3092-2008. The representative materials are the same as above. It is mainly used to transport low-pressure fluids such as water, gas,GuapilesQ345D seamless square tube, air and oil and add water or steam. The surface of square pipe shall be hot galvanized or cold galvanized.
equipment maintenance .When the square tube is covered, the surface of the square tube shall be ventilated to avoid the collection of water vapor on the surface due to difficult volatilization.
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.
The modification of Ca, rare earth and other trace elements on inclusions changes the structure, morphology and physical properties of inclusions in steel, spheroidize and refine inclusions in steel, so as to improve the mechanical properties of square tubes.
As for the color treatment technology of q355b square tube, the application of color q355b square tube treatment technology includes chemical method and electrochemical method from the process point of view. They can get different colors by treatment in specific electrolyte, so as to improve the wear resistance, color and variety of q355b square tube, which can be applied to different occasions and obtain different economic benefits.
Promotion.Hardness test is to use a hard indenter to slowly the sample surface according to the specified conditions, and then test the indentation depth or size, so as to determine the hardness of the material. Hardness test is simple, and there is an approximate conversion relationship between material hardness value and tensile strength value. The hardness value of material can be converted into tensile strength value which is of great practical significance.
The surface of galvanized square pipe treated by sand blasting, shot blasting or pickling process is relatively clean, and the oxide scale and rust are removed, which improves the adhesion of the coating. When the installation site unconditionally adopts sand blasting and shot blasting, manual and mechanical derusting can be adopted, but the derusting quality level must be reached.
The cutting surface of the square tube shall be true circle, and the cutting line shall be at right angles to the axis of the square tube. Excessive force is the reason for cutting the square tube into flat or oval so the square tube should be cut with appropriate force.
Guapiles.Drawing process flow of square tube in the production process of square tube, it needs a lot of processes to complete the production process, so that the production quality of square tube can be more strictly guaranteed. This paper mainly introduces the drawing process flow of square tube. Let's understand it below.
The detailed steps for cutting square tubes are as follows: what is used for cutting square tubes? Seamless square tubes can only be processed successfully after certain steps in processing and engineering. The first step that must be experienced in processing is to cut seamless square tubes. There are various cutting methods for seamless square tubes. Today,Guapiles22 galvanized square tube, I'd like to introduce a method of cutting seamless square tubes with slices, It is recommended to cut according to the following provisions: select a uniform surface to select potatoes; The large diameter is not too much, or they don't cut well; B choose sharp seeds, slightly larger ones, and small needles. Sometimes large potatoes are not long enough; C. select flat, sink and vegetable board. When it is uneven, it will be cut continuously; When the texture is light cut, the die-cutting board will follow.
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.