steel tube

    As long as it is for seamless steel pipe has a certain understanding of friends, you know that it has a lot of hollow section, to a large number of into the fluid in the pipeline, such as oil and gas pipelines, etc. Solid material such as steel pipe, if the bending strength is equal, its quality is small, easy to transport and install, is a kind of economic cross section steel, at the same time can also be widely into the mechanical parts, such as oil drill pipe and bike rack, etc., its effective to improve the material utilization, but also can simplify the manufacturing process.     And now the domestic market of seamless steel pipe manufacturing technology good and bad are intermingled, want to buy high quality seamless steel tubes for amateurs also exists a certain difficulty, so how to buy seamless steel tube?     Seamless steel tube standard now has a total of 47 items, the GB/T17395 seamless steel tube, regardless of size or has a certain dev...

    Casing in the production prone to outer folding defects, affect product quality improvement, it needs to be controlled.     There are several outer folding edge oxide particles cause segregation of elements, with a folding, an oxide middle folding, the presence of an excess of Al, Mg, Ca, S, P, Mn, Si outer folding element, particularly at the grain boundaries have 20μm so brittle inclusions SiO2 and silicates, intergranular fracture occurs, and said brittle inclusions is the main reason for the formation of the outer fold.     Smelting process:     1) To ensure that a pull carbon hit, after avoiding blowing carbon control endpoint> 0.10%;     2) Increase the effect of converter slag, slag under strict control, the departure process using slag, a steel ladle slag after thickness <50mm;< span="">     3) Double slag operation, control phosphorus content of the molten steel.     Refining proce...

    First,after hot rolling, steel internal non-metallic inclusions (mainly sulfides and oxides, and silicate) is pressed into thin slices, delamination (interlayer) phenomenon. Layering the steel in the thickness direction of the tensile performance deteriorated significantly, and there may be an interlayer tears during weld shrinkage. Weld shrinkage induced local strain reaches the yield point strain often several times larger than the load caused by the strain.     Second, the residual stress caused by uneven cooling. The residual stress in the absence of external force internal self-equilibrium stress, hot-rolled steel sections have such a variety of residual stress, the greater the general steel-sectional dimension, the greater the residual stress. Although the residual stress from equilibrium, but still has some influence on the properties of steel members under loads. Aspects such as deformation, stability, fatigue, etc. are likely to have an adverse effect....

    Resistance welding is to press the workpiece to be clamped between two electrodes and apply an electric current, which is heated to a molten or plastic state by the resistance heating effect caused by the current flowing through the contact surface of the workpiece and the adjacent region, so as to form a metal. A combination of methods. Welded pipes made with resistance welding are called electric resistance welded pipes(erw pipe).     ERW pipe machine     ERW pipe machine, its efficiency is 3 to 5 times higher than the traditional TIG welding. Due to frequent occurrence of defects such as incomplete penetration of the root and sagging of arc pits, the TIG welding MIG welding filler and capping process was used. Although the improved welding process basically solved the problem of incomplete penetration of the root, the welding efficiency was reduced. Increased investment in equipment, but also complicated operating procedures.     The ...

    Shell fabric’s feeling would be an important reference factor for buyers who need clothes. So does for steel pipe, not matter you are seamless steel pipe, ERW steel pipe, or SSAW steel pipe.     Affected by following factors of the pipe surface roughness:     1: Wear resistance of pipe surface roughness. Generally speaking, the rougher the steel pipe's surface, with the smaller effective contact area among the mating surfaces, there is more pressure, there is more wear here!     2: Roughness stability would be affected by complex nature. For the steel pipe's surface, the rougher, the easier it is to wear. Under this situation, we should make sure the high quality of the steel pipe's roughness.     3: Pipe surface roughness would have impact for gas or liquid erosion. Rough surface is easy to make corrosive gas or liquid penetrate the inner surface of the microscopic metal, causing surface erosion.     http://www.x...

    There is the coming of rainy season in Hunan province with the coming of spring. That means the rain maybe fall in torrents in most of time. Under this situation, as manufacturer of seamless steel pipe, Tianjin Xinyue Steel Group know we should keep the better work of each kind of steel pipe.     For welded steel pipe like SSAW steel pipe used for sewage dealing: we should make sure the smooth all the time as the rain would come more than usual time. There are various impurities in it so that we should clear it.     For welded steel pipe or seamless steel pipe used in home for transmission of tap water. We should take an eye on the moist environment. We all know it would be damage because of the moist under the rainy day. So it is necessary to keep it dry if we could.     Of course, the elements would be vary when we really want to expand the life of steel pipes.     http://www.xysteelpipe.com/info/Rainy-season-with-steel-pip...

    Usage of spiral steel pipe is relatively high, the application is very wide, it should be how to choose before in the selection to pay attention to quality.     The first method is a more professional detection method, that is, by the strength of the pressure vessel to be detected. Commonly, we use atmospheric pressure and water pressure to detect, in this way can detect the working conditions of the spiral steel pipe in the pressure working environment, but also to detect the tightness of the spiral steel pipe, generally take the atmospheric pressure detection, because such security Relatively high, and if the water vapor pressure through the test, then the need to remove the spiral pipe after the water, too much trouble.     The second method is also relatively simple, that is, through the surface of observation. With the naked eye found in the spiral steel pipe in the welding and size of the problem, if necessary, you can also use the standard s...

    1, Defective square tube because the processing is not in place, the appearance will be a lot of glitches, and these burrs will be very simple scratches the pipe surface, so the first identification method came out, there are many scratches on the exterior of the Is the quality of the poor.     2, Defective side tube manufacturers in order toreach a large negative public service will increase the amount of productprocessing when the reduction, and this will result in products of fine and low cross-ribs, so if you find such a situation, then the best side do not buy.     3, So called square tube is because thecross-section of the pipe is square, and poor side of the pipe in this regardis not in place will make the pipe section of the oval-shaped cross-section.     4, Residual side tube is basically not able to reach the standard specifications, so when you buy with a professional ruler about the volume can be briefly resolved.   ...

    1, Water supply and drainage     Building water supply systems can be divided into living, production, and fire-fighting water supply systems depending on their applications. These three water supply systems are not necessarily set up separately, and are often a combination of both or three. The building drainage system collects the water used by people inside the building in daily life and industrial production, and discharges it outdoors in time.     According to the nature of the sewage discharged from the system, the internal drainage of the building can be divided into domestic sewage, domestic wastewater, industrial wastewater, and roofing. Rainwater, domestic sewage (waste) water, industrial waste water, and rainwater are each set to discharge pipelines, which are called diversion systems; the combination of more than two types in one pipeline is called combined flow system; what kind of form should be used according to water quality conditio...

    As the saying goes that To be is to be perceived. You would feel it if we cannot describe it sometimes. This is for air, water, seamless steel pipe and so on. Even a child would tell his mother that we can use this tube for water when he plays games.     Seamless steel pipe, coming from Tianjin Xinyue Steel Group, with its special characters API 5L: GR B, X42, X46, X56, X60, X65, X70, is here for customers. We cannot see deep sea’s oil drilling all the time. However, as my child said that I know we need steel pipe when I have a shower and I need to have the steel pipe when I wash my clothes. We will know its importance in our daily life once the broken steel pipe cannot do any transportation work for us. We may not talk about them all the time, however, we know they are here with us which would give us comfort!     http://www.xysteelpipe.com/info/To-be-is-to-be-perceived-that-is-steel-pipe-933-1.htm

    Steel pipes are used in many different ways both for commercial and personal use. There are many different methods for cleaning steel pipes. Choose the method that works best for you and your needs. If that method doesn't work as desired, move onto a different method.     Chemical cleaning: chemical cleaning of pipe refers to temporarily transformation of the pipeline using chemical agents, adopt chemical cyclic cleaning using temporary pipeline and circulating pump station from both ends of the pipeline. The technology has features such as strong flexibility, high speed, thorough cleaning and having no request of the shape of pipes, etc. Chemical cleaning is complete, but the residues must be cleaned up. Otherwise it will have effect on later running.     PIG operation: PIG industry technology produces the driving force relying on pump driving fluid to drive PIG in the tube to push forward, discharge the accumulated dirt in the pipe, so as to achie...

    Classfication of seamless steel pipe by application     1. Line pipe.     Such as: water, gas pipes, steam pipes seamless pipe, oil pipeline, oil and gas line pipe. Agricultural irrigation faucet with pipes and sprinkler pipe.     2. Thermal equipment tube.     Such as general boiler boiling water pipe, superheated steam pipes, locomotive boiler superheater tubes, opium pipe, small pipe, brick arch pipe and high-temperature high-pressure boiler tubes.     3. Mechanical industrial pipe.     Such as aviation structural tube (tube, oval tube, flat oval tube), automobile axle tube, axle tubes, structural tubes automobile and tractor, tractor oil cooler tube, farm with a square tube and rectangular tube, transformer tube and bearing tubes.     4. Petroleum geological drilling pipe.     Such as: oil drilling pipe, drill pipe (Kelly and hexagonal drill), drill collar, oil tubing, cas...

    At present, ordinary fluid on the market with the general Longitudinal Welded Pipe is generally used in high-frequency resistance welding production, which is characterized by high production efficiency, weld heat affected zone is small, low quality requirements on the bonding surface, but the molding quality requirements, forming process Any change in the shape of the V-shaped opening may cause welding quality problems.     Rolling groove processing is the use of grooved joints as pipe fittings when the pipe pretreatment process. Its operating principle is the use of roll groove rolling machine driven rotating pipe, pipe radial direction of the follow-up pressure roller radial pressure applied to the use of the structure of the pressure roller welded pipe in a fixed position of cold out a specified groove.     A "roll groove cracking" is the root cause of the weld strength is not enough, coupled with rolling groove processing of the severe deformat...

    LSAW steel pipe quality check methods, during which the physical approach is the most commonly used inspection methods, physical examination is the use of physical phenomena to determine or check the method.     Magnetic force     Magnetic flaw detection can only find the appearance and appearance of magnetic straight seam welded pipe shortcomings, and the shortcomings can only do quantitative analysis, the nature and depth of the shortcomings can only be based on experience to estimate. Magnetic inspection is the use of magnetic field magnetization of ferromagnetic Longitudinal Welded Pipe leakage occurred to find the shortcomings. According to the measurement of magnetic flux leakage method is not the same, can be divided into magnetic powder method, magnetic induction method and magnetic recording method, during which the most widely used magnetic powder method.     Soaked inspection     Penetration test is the use of so...

    No doubt that seamless steel pipe, due to its no leak in surface, is the good choice for using in high pressure, temperature environment. As manufacturer of various steel pipes, Tianjin Xinyue Steel Group would like to say lots of engineers would have addiction for seamless steel pipe.     Seamless steel pipe, manufactured by our vendors with high grade raw materials under the guidance of experienced and skilled professionals as per the set industry standards.Thus, there is no doubt that we can offer seamless pipe with excellent corrosion resistance, high pressure taking and superior dimensional accuracy, which can be used in oil, gas, petrochemical and chemical industry for carrying the fluid.     The details of the seamless steel pipe are here:     Standard: British Standard BS 3059: Part 2 Steel boiler and super-heater tubes     Uses: Specification for carbon,alloy and austenitic stainless steel tubes with specified elevat...