LSAW Steel Pipe

    (1) Seamless steel pipe size accuracy     In order to determine the position of the shaft, it is usually required for its dimensional accuracy (IT5 ~ IT7). The accuracy of the journal size of the assembly drive is generally low (IT6 ~ IT9).     (2) Seamless steel pipe geometry accuracy     The geometric shape accuracy of the shaft parts refers mainly to the roundness, the cylindrical degree, etc. of the journal, outer cone, Mohs cone, etc., and should be limited to the tolerance range. 40Cr seamless steel pipe with high accuracy requirements of the inner and outer circular surface, the drawings should be marked on the allowable deviation.     (3) Seamless steel pipe position accuracy     The positional accuracy requirements of the shaft parts are determined primarily by the position and function of the shaft in the machine. It is usually necessary to ensure that the journal of the drive body is required to coax t...

    Cold-drawn precision steel pipe with internal and external wall without oxidation layer, to withstand high pressure without leakage, high precision, high finish, cold bending is not deformed, flared flat no cracks, the surface has been anti-rust treatment, etc., mainly for mechanical structure , Hydraulic equipment and automotive motorcycles pneumatic or hydraulic components, such as cylinders or cylinders.     The basic process of cold drawing is: hot-rolled capillary; capillary inspection, grinding; capillary pickling; after pickling pickling; cold drawn; fine pull straight before the line; pickling, lubrication; Processing;     Production need to pay attention to control:     1, Capillary     Capillary wall thickness to be uniform, less inside and outside the surface defects; to configure the external surface polishing and hole defect cleaning equipment.     2, Re-examination     Compared with ordi...

    Precise stainless steel pipe refers to stainless steel pipes with austenitic organization in normal temperature. Stainless steel tubes contain about 0.1% C, 18% Cr, 8% ~ 10% Ni, with stable austenite organization. Common heat treatment technologies are: solution treatment, stabilizing treatment and stress relief treatment.     Solution treatment     Heat precise stainless steel pipes to 1050-1150 degrees Celsius and then water quenching, making carbon dissolved in stainless steel and keep the state in room temperature, which is a method of heat treatment to prevent the intergranular corrosion and corrosion resistance of the steel will be improved greatly. For thin-walled precise stainless steel pipes, generally water cooling is adopted as well as air cooling.     Stabilizing treatment     Stabilizing treatment is commonly carried out after solution treatment. Heat precise stainless steel pipe to 850-880 degrees Celsius and pe...

    Small diameter seamless steel pipe is used for double-sided submerged arc welding production technology. It product by bending, commissural, internal welding, outside welding, straightening, flat top multi-channel process to achieve the American Petroleum Institute standards. Large diameter thick wall steel pipe used in large multi-steel construction and make the body supporting portion. For example bridge piling, piling seabed, and high-rise building pile.     Small diameter seamless pipes refer to the ratio of small diameter and wall thickness of the pipe. The smallest diameter is up to 3mm and the minimum wall thickness to 1mm.     Small diameter seamless steel pipe weight formula is [(OD - Wall Thickness) * Thickness] * 0.02466 = kg / m (weight per meter)     Small diameter seamless steel pipe materials are including 10#, 20#, 25#, 35#, 45# and16Mn etc.     Mainly used for petroleum geology drilling pipe, petrochemical cr...

    Metallographic analysis of the seamless tube includes high magnification test and low magnification test.     High magnification test     A high magnification test is a method of evaluating the internal structure and defects of a material through a microscope. The high-power test items that are usually performed on seamless tubes include: microscopic evaluation of non-metallic inclusions in steel; determination of average grain size; determination of decarburized layer depth; microstructure inspection.     Seamless tubes Currently, the assessment of non-metallic inclusions in steel is generally performed at a magnification of 100 times the field of view. The seamless steel tube compares the most serious field of inclusions in the sample with the standard level map to evaluate inclusions in the steel. The level of things.     Non-metallic inclusions are graded according to the A method in GBIP 10561, which can be classified as...

    According to GB/T9711.1 performance requirements of different pipeline steel pipe, according to the different tempering temperature and tempering can be divided into the following kinds:     1, low temperature tempering (150-250 degrees)Low temperature tempering income group as tempered martensite. Its aim is to keep a hardened steel under the premise of high hardness and high wear resistance, decrease the quenching stress and brittleness, lest when using split or premature failure. It is mainly used for cutting all kinds of high carbon cutting, measuring tool, GB/T9711.1 pipeline steel pipe, such as pieces of rolling bearing and carburizing.     2, medium temperature tempering (250-500 degrees)Organization for tempered troostite middle temperature tempering. Its purpose is to obtain high yield strength, elastic limit and high toughness. Therefore, it is mainly used for various kinds of GB/T9711.1 pipeline steel pipe and hot mould processing, after ...

    1.Place your pipe on a flat surface.     2.Measure the outside diameter of the pipe using a micrometer or caliper. Write down that measurement.     3.Measure one inch from the end of the pipe with a tape measure or caliper and make a small mark with a permanent marker.     4.Count the number of threads in that inch. Write down that number. Compare that measurement with a pipe measurement chart.     5.Place your pipe on a flat surface.     6.Measure the outside diameter of that pipe with a micrometer or caliper and write down that measurement.     7.Measure the distance between any two adjacent threads on the pipe in millimeters. Write down that number. This is called the pitch. Compare that measurement with a pipe measurement chart.

    Carbon seamless steel pipe is mainly used for conveying high-pressure oil and gas near the wellhead. With the increasingly serious problem of hydrogen sulfide corrosion, the development of anti-sulfur seamless pipeline is imminent, and the performance of sulfur-resistant is the key. The influence of Cu and Ni on the HIC properties of the seamless pipe materials and the S content in the steel were also investigated. The effects of Cu and Ni addition on the properties of the HIC were also investigated. Hydrogen bubbling sensitivity.     1. Test method     According to the ISO3183 standard, the ingot method was used to smelt 7t 1 t ingot in the laboratory. After forging, perforation, pipe jacking and sheet reduction, the pipe was cut to 20 mm × 100 mm × 5 mm , And then immersed in the solution prepared according to the standard. After 96 h, the specimens were taken out and taken perpendicular to the cross-section. Three parameters (crack length ratio C...

    Low pressure boiler tube is open on both ends and has a hollow section, the length and the surrounding of the larger steel, according to the production methods can be divided into seamless steel pipe and welded steel pipe, steel pipe specification with overall dimensions (such as the diameter or length) and the wall thickness, said its size range is very wide, from small diameter capillary until several meters in diameter, large diameter pipe. Boiler tube can be used in the pipeline, thermal technology equipment, mechanical industry, petroleum geological exploration, containers, chemical industry, and special purpose.     The manufacture of the low pressure boiler tube method:     (1) general boiler tube temperature under 350 ℃, the domestic pipe mainly use 10, 20 carbon steel hot rolled or cold drawn tube manufacture.     (2) low pressure boiler tubes are often in high temperature and high pressure conditions, when using the pipe under...

    The method for quality inspection of LSAW pipe, in which the physical method is the most commonly used inspection method, physical examination is a physical phenomenon to determine or check the application of the method.     Magnetic force     Magnetic flaw detection can only find the shortcomings of the appearance and appearance of the magnetic straight seam welded pipe. The disadvantages can only be quantitatively analyzed. The nature and depth of the flaw can only be estimated based on experience. Magnetic flaw detection is the use of magnetic field to discover the leakage of magnetic longitudinal weld seams. According to the method of measuring magnetic flux leakage, it can be divided into magnetic powder method, magnetic induction method and magnetic recording method, in which the magnetic powder method is the most widely used.     Soak inspection     Penetration testing is the use of some liquid physical properties such...

    Lisa: “Where is the pipe for sending us water?”. My daughter asked me.     I: “It could be seamless steel pipe as well as ERW steel pipe, they are everywhere once you can think about them”.     Where are steel pipes? They are everywhere     Infrastructure: Actually, steel pipes have a widespread application in the infrastructure sector, such as single and double door frame, window section with galvanized steel pipe, hollow steel pipe.     Fire fighting: Corrosion steel pipes would be one of the main area for customers. With advanced technology, Xinyue steel has set corrosion free fire fighting steel pipes which can hold on high pressure application. Of course, these steel pipes can be used effectively in fire-safety applications too.     For other areas, we can see that construction, agriculture, automobile, and solar energy are the demands for steel pipes.     http://www.xysteelpipe.com/info/Are-steel...

    A driving car needs the help of various steel pipes like seamless steel pipe, ERW steel pipe and so on. Here is the question: how many parts needed steel pipe in a car? As steel pipe supplier, let Tianjin Xinyue Steel Group give you an introduction.     Car direction device: this device needs just ordinary steel pipe like the ERW steel pipe.     Shock absorbing: This is another part in a car and we know that we should eliminate the huge sound and high pressure when we drive a car. So that it is not necessary to use the high quality steel pipe and just the ERW steel pipe or SSAW steel pipe would be okay.     Engine oil and gas pipe: Oil and gas concerns about the safety. So we should keep the high quality of the steel pipe. Under this situation, seamless steel pipe may be a nice option for it.     Drive bearing: We can just put general steel pipe for this device.     Cylinder: So does for cylinder with the general ...

    There are lots of standards for different categories of steel pipe as well as different countries’ requirements. As foreign trade on steel pipes like seamless steel pipe, ERW steel pipe, SSAW steel pipe, Tianjin Xinyue Steel Group can provide various standards of steel pipe for customers.     Here is the list for the products:     European Standard: EN10216-5; EN10216-2     German Standard: DIN 17456; DIN 17458     US Standard: API 5L - 2007;ASTM A53 / A53M -2007;ASTM A252 - 98;     BS EN 10219 -1 - 2006;BS EN 10219 -2 - 2006;BS1387 - 1985;     AWWA C200 - 1997;AWWA C210 - 2003;DIN 2573 / DIN 2576;     Japan Standard: JIS G3459; G3463     Russia Standard: GOST 9941;GOST 5632     Chinese Standard: GB/T14975, GB/T14976; GB13296; GB5310; GB9948     You can inquire us if you need any standard for your steel pipes. Of course, you can discuss with us if the sta...

    Different classification of steel pipe would have different range from width length for each kind of steel pipe like seamless steel pipe, ERW steel pipe, SSAW steel pipe and so on. Today we would like to introduce the specifications range for large diameter steel pipe.     Generally speaking, the large diameter steel pipe has specific character for the diameter. For example, the outer diameter of the steel pipe is usually more than 325mm, and wall thickness of more than 20mm.     However, there are difference for single welded steel pipe and double welded steel pipe.     Single welded steel pipe: At present, the maximum diameter of a single weld steel pipe can reach 1220mm, wall thickness up to 80mm.     Double welded steel pipe: The maximum diameter of the double weld steel pipe can reach 2020mm.     If you need to, you can go to Tianjin Xinyue Steel Group for more details.     http://www.xysteelpipe....

    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 presenceof an excess of Al, Mg, Ca, S, P, Mn, Si outer folding element, particularly atthe grain boundaries have 20μm so brittle inclusions SiO2 and silicates,intergranular fracture occurs, and said brittle inclusions is the main reasonfor the formation of the outer fold.     Smelting process:     1) To ensure that a pull carbon hit, after avoiding blowingcarbon control endpoint> 0.10%;     2) Increase the effect of converter slag, slag under strictcontrol, the departure process using slag, a steel ladle slag after thickness<50mm;     3) Double slag operation, control phosphorus content of themolten steel.     Refining process:     1)...