Seamless steel pipe exporter

Brief Introduction to SMLS Steel Pipe  Seamless Piping are popular in everywhere, including building construction, industrial plants and even home. SMLS steel pipe form Tianjin Xinyue Steel Group have a large range of sizes from 10.3mm to 914.4mm and can be seen to occur in several forms. With such a large range of use for the products, it is quite beneficial to the suppliers as they have a constant demand.  When they are used in the different kinds of constructions, it becomes imperative to have the right kind of material used to build them. Any discrepancy in their manufacture will result in the whole structure they are used for to become useless. Instead of that, it is better to use the products from reputed manufacturers like Tianjin Xinyue Steel Group.  Basic information about  SMLS steel pipes  There are no right and wrong materials for the piping among the commonly used products. The major difference comes from the use they are put into. When t...

Most common seen problem for SMLS steel pipe heat treatment Seamless steel pipe in the heat treatment, there is thermal stress and tissue stress, this internal stress can be superimposed or partially offset, is complex and varied, because it can with the heating temperature, heating speed, cooling, cooling speed, parts shape and size changes, so heat treatment deformation is inevitable.  Seamless steel pipe  in the heat treatment process of mechanical collision will also cause deformation of parts, but this deformation can be improved with the operation to reduce and avoid. 1, Surface decarburization Seamless steel pipe in the heat treatment process, if it is heated in the oxidizing medium, the surface will be the oxidation of parts of the surface to reduce the quality of carbon, resulting in surface decarburization. The depth of the surface decarburization layer exceeds the final processing of the amount will make the parts scrapped. Determination of surface decarbur...

The Application of Seamless Steel Pipe in Different Industry As the carbon steel pipe bending ability, so recently, manufacturers, contractors and other buildings of the beams and frame adopted steel, with the development of steel production in the construction. There is also more and more use of steel structure, furniture, water supply and drainage, piling, gas, transportation and agricultural equipment manufacturing, underground resources such as coal, oil and gas development, etc.are inseparable from steel, so the pipe on the development of national economy, infrastructure construction and people's standard of living are closely related.  Technical standards of  SMLS  for the full performance characteristics, correct, reasonable economic use of seamless service. Standards set forth in the diameter, wall thickness and tolerances, pipe length, bending, end elliptical degree, the weight of the delivery and tolerance, marking and other general provisions of the scop...

Main standards and uses of seamless carbon steel pipe As per my last news, you could mentioned there it’s a seamless carbon steel pipe. But how many details you know about the seamless carbon steel pipe? It doesn’t matter if you are blind to this, as Great Steel Pipe would like to share the main standards and uses for all of you. The general carbon seamless tube is made with 10, 20, 30, 35, 45 or others high-grade carbon structural steel; 16Mn, 5MnV or others low alloy carbon structural steel; or made with 40Cr, 30CrMnSi, 45Mn2, 40MnB alloy steel through hot/cold rolling. It has an important position in China's steel industry. The below is the main standards and uses of it. ASTM A 53 specification for black steel seamless pipes ASTM A 106 Gr. B seamless carbon steel pipes for high-temperature service ASTM A 161 seamless low-carbon and carbon molybdenum steel still tubes for refinery service ASTM A179 specification for seamless cold-drawn low-carbon steel heat-exchang...

How to Produce Seamless Steel Pipe A tube is a enclosed shape used to perform some structural function. The shape can be round, rectangular,square or whatever can be manufactured for a particular application. Round tubes is different from pipes in the way they are dimensioned. A 1 1/2-inch round tube has a 1 1/2-inch outside diameter. A 1 1/2-inch round pipe has a 1 1/2-inch inside diameter. The reason being that the outside of tubes is important for structures, however, the inside of pipes is used for fluid flow.  Seamless steel pipe The production of  seamless steel tube  typically begins in an electric arc facility. The steel is then cast as an ingot or continuously cast as a bloom. The bloom is then rolled into a billet. The solid billet becomes a tube by being drawn over a piercing tool by two external rollers set at an angle to each other that move the billet. At this point a “rough” tube has been formed.  The rough tube is put through an elongator, ...

The Usage of Seamless Steel Tubes and Welded Pipes Seamless steel pipe is used in many aspects, such as high temperature and pressure usage, high quality requirements for fluid leak-proof, and the choice of seamless steel pipes for fear of pollution. Seamless steel pipe usage can also used  in terms of building structures for machining, different kind of materials, strengths, thickness, specifications, precision etc. Even more, seamless pipe joints are better, can produce according to customer’s requirement.  Since 1930s, the development of high-quality steel rolling production and testing technology very quickly and gradually improve the quality of welding,  welded steel  varieties and specifications are constantly increasing, and more and more areas to be applied. Seamless steel pipe’s advantage are low cost, high production efficiency. The steel pipe diameter and wall thickness ratio of lower than 20 is called thick-walled steel pipe. The seamless steel pip...

Usage of Cold drawn and hot rolled SMLS steel pipes Cold drawn seamless steel and hot-rolled seamless steel tubes have a clear division.  There are several aspects of seamless steel pipe, take the material and performance standard for example: 1.Its material, including  carbon steel pipe  and alloy pipe, for the application of transferring fluid steel pipe, high pressure boiler seamless steel pipe, fertilizer facilities, high pressure seamless steel pipe, seamless steel pipe for geological drilling, petroleum cracking seamless, oil drilling seamless steel pipe, OCTG seamless drill collars, automobile axle seamless steel pipes, ships building with seamless steel pipes, cold drawn cold rolled precision seamless steel tubes.  2.The steel ingot, as well as billet or bar, which are used to forming seamless steel pipe, makes of seamless steel pipe; Generally speaking, cold drawn steel pipes are much better in diameter and wall thickness control. 

Test Method of Seamless steel tube Generally,seamless steel pipe may have defects are double skin, crack, fold, etc. When both end of the reserved resection margin is less, due to the functional  reasons of the detection facility, both ends of the head and sometimes the lack of effective testing, the end is most likely have cracks or other defects in the site. End there is a potential crack tendency, the installation of the weld heat affected may also be potential crack propagation. Thus, it should be noted that the detection of a certain region of the seamless steel pipe, the timely detection of defective expansion of the pipe ends.  With austenitic seamless steel pipe should be noted that when the insulation is damaged or there may be rain infiltrated the site, penetrant testing, to detect stress, corrosion, cracking or pit problems.  Magnetic particle testing, penetrant testing can be easily found that the surface crack, fold, double skin, hairline, pinhole ...

Test Method of SMLS steel pipe Generally,seamless steel pipe may have defects are double skin, crack, fold, etc. When both end of the reserved resection margin is less, due to the functional  reasons of the detection facility, both ends of the head and sometimes the lack of effective testing, the end is most likely have cracks or other defects in the site. End there is a potential crack tendency, the installation of the weld heat affected may also be potential crack propagation. Thus, we should note that the detection of a certain region of the  seamless steel pipe , the detection of defective expansion of the pipe ends on time.  With austenitic seamless steel pipe should be noted that when the insulation is damaged or there may be rain infiltrated the site, penetrant testing, to detect stress, corrosion, cracking or pit problems.  Magnetic particle testing, penetrant testing can be easily found that the surface crack, fold, double skin, hairline, pinhole ...

Advantages of Galvanized Seamless Steel Pipe Galvanized seamless steel pipe is a kind of steel pipe with a anti-corrosion zinc coating. This coating has many advantages over other methods used to protect steel and it makes galvanized steel pipe, fittings and other structures more desirable in many situations.  Below are the advantages associated for using galvanized seamless steel pipe.?  1. Fast assembly:  GI steel pipe , especially GI scaffolding, is easy to assembly 2. Low initial cost: cost for GI is much less than other anti-corrosion coating. 3. Lifespan: As GI is directly stick on pipe body, lifespan of both the pipe body and zinc coating will be longer than others.  4. Low maintenance costs: maintenance cost for GI steel pipe is very low.  5. Easy inspection: Inspection for GI pipe will be much easier than other steel pipes.  Abstract from  Tianjin Xinyue Steel Group

　　The out-diameter of seamless steel pipe can be range from 21.3 to 914.4mm. Then what are benefit by using large-diameter seamless steel pipe? 　　First of all, after hot rolling or forging a special heat treatment, large-diameter seamless steel pipe would have no further direct delivery after cooling. Generally speaking, the hot-rolled (wrought) termination temperature is generally 800 ~ 900 ℃, which is unlike the normalizing strict temperature control heating steel pipes so hot rolling seamless steel pipes would have better performance on steel micro-structure and mechanical properties. 　　One more thing, annealing would play an important role in the production process of seamless steel pipes as it would eliminate defects and improve the organization and internal stress left before the procedure and after the procedure to prepare for the organization and performance, alloy structural steel, guaranteed harden-ability structural steel, cold heading steel and so on. Thus, we can get ...

　　The out-diameter of seamless steel pipe can be range from 21.3 to 914.4mm. Then what are benefit by using large-diameter seamless steel pipe? 　　First of all, after hot rolling or forging a special heat treatment, large-diameter seamless steel pipe would have no further direct delivery after cooling. Generally speaking, the hot-rolled (wrought) termination temperature is generally 800 ~ 900 ℃, which is unlike the normalizing strict temperature control heating steel pipes so hot rolling seamless steel pipes would have better performance on steel micro-structure and mechanical properties. 　　One more thing, annealing would play an important role in the production process of seamless steel pipes as it would eliminate defects and improve the organization and internal stress left before the procedure and after the procedure to prepare for the organization and performance, alloy structural steel, guaranteed harden-ability structural steel, cold heading steel and so on. Thus, we can get ...

SMLS casing Both seamless steel pipe and ERW can be used for casing. We’ll have a general clue about SMLS casing today. We’ll talk about out diameter, length,regular standard and steel grade, surface treatment and ends for SMLS casing. Length cover R2&R3: R2:7.62 meter to 10.36 meter.    R3: 10.36 meter to 14.63 meter. OD: 114.3mm to 508mm Surface treatment: varnished surface or black surface. Ends: Plain ends, BTC/BC/BT&C,STC,LTC etc. Standard: API 5CT PSL1/PSL2 Steel Grade: T95,P110,N80,K55,J55,H40 etc.  Abstract from  Tianjin Xinyue Steel Group

Application of SMLS SMLS, short for seamless steel pipe, is formed by billet. Our base has equipped with hot-roll production line, cold-drawn production line, automatic heat treatment line, OCTG and drill pipe processing line, with annual production capacity up to 750,000 tons. Seamless steel pipe is widely used for many purpose. 1. Line pipe used for transmission: such as natural gas, petroleum, water and fluid transmission. 2. API 5CT Casing 3. API 5CT Tubing 4. Drill pipe: API SPEC 5DP, API SPEC 5D, API SPEC 7, most common steel grade are E75, X95, G105, S135. 5. Boiler tube: DIN17175, ASME SA-106, JIS G 3462, EN10216-1, EN10028. 6. Mechanical pipe: EN10210, EN10297, ASTM A519 7. Cylinder pipe: ASTM A519. And we have our own system of control quality for you, form raw material inspection, to online inspection, to finished pipe inspection. And third party inspection is always welcome here in China. We are aiming to provide customer with safe, reliable and quali...

Seamless steel pipe is widely applied in many international projects, engaging in petroleum and gas pipeline, dredging, piling, bridge building, water conservancy, oil well and other projects. For Tianjin Xinyue Steel Group, our marketing share is spreading worldwide, such as South America, South Africa, middle East, Southeast Asia, Europe and so on. Our most recent project for seamless steel pipe is going into Middle East Market for thousands of tons. We’ve gained a worldwide reputation in Seamless Steel Market. For seamless steel pipe, manufacturing process is as below: Round billet heating--- Piercing--- Elongating---- Reheating--- Stretch reducing--- Cooling--- Straightening--- Property Inspection--- Cutting--- Size and Surface Inspection--- NDT--- Hydrostatic test--- Drifting--- Coating--- Marking--- Bundling---Delivery So the process from round billet to seamless pipe have inspection throughout. So you can have faith in our production quality.

Comparison of production methods of seamless steel pipe Seamless steel tube is an round hollow section of steel that is used as a conduit for conveying fluids such as oil, natural and gas, water and boiler tube. Hot spinning,  hot extrusion and hot piercing rolling would be three main forming methods for producing seamless steel pipe. How can we choose the method for manufacturing steel pipes? Let’s start from their features. Hot extrusion:  Billet machining pre-treatment before extrusion needs here. Advantage:  Low equipment investment, less waste in material, mature technology. Disadvantage:  Extruded tube diameter has to be below 100mm, and the corresponding control system to upgrade according to different diameters of the steel pipe. Hot spinning:  With pressure taking, flat blank or pre molded blank is worked for rotating core rod. Finally, customers get thin-walled hollow rotary body products. Advantage:  High precision products, good...

The use of seamless steel tubes produced by steel pipe factories A steel pipe is a hollow pipe that is suitable for conveying liquids, powdery objects and gases. It is a kind of economical steel. Steel can be used to build a structure of the structure, used as a mechanical support, both to save materials, but also reduce their weight. Steel pipe plant in accordance with the production method of the steel pipe is divided into seamless steel pipe and sewn. Seamless steel pipe is mainly used for water and oil and gas transport, because it is not welded joints, durable, water vapor is not easy to leak, and that is, it can withstand the pressure. Especially the transmission of gas, the pressure is too large, it is easy to cause an explosion, for people's lives and property caused great security risks. Seamless steel pipe is also divided into seamless steel pipe and seamless steel pipe. Alloy seamless steel pipe can withstand the high pressure of 5310, mainly used for oil and gas ...

Cold-drawn seamless steel pipe production method? First, no mandrel pull (pull only when the die is not mandrel); Second, short mandrel pull (with extubation die when the pull and the axis of the fixed length of the short mandrel); Third, the long mandrel pull (pull out with the extubation die and pull the steel pipe with the length of the length of the pipe is slightly larger than the length of the mandrel) Fourth, the swing mandrel pull (pull with the extubation die and not for axial fixed and can be self-stable in the deformation area in the short mandrel). During which the first two kinds of production in the production was particularly prevalent; coreless rod drawing to reduce the outer diameter of the steel pipe; the other three with the mandrel of the rod is used to tighten the wall thickness of the pipe, together with a certain reduction Deformation. Abstract from  Tianjin Xinyue Steel Group

Production Process of Thick Wall Seamless Steel Tube The production method of thick-walled seamless steel pipe is roughly divided into oblique rolling method (Mennesman method) and extrusion method. The oblique rolling method (Mennesman method) is to first use the inclined roll to perforate the tube, and then use the rolling mill to extend it. This method of production speed, but the machinability of the tube is higher, mainly for the production of carbon steel and low alloy steel pipe. Extrusion law is the use of punching machine tube or ingot piercing, and then extruded into a steel pipe extruder, this method is less than the low efficiency of the application of the method, suitable for the production of high strength alloy steel pipe. Both the skew and the extrusion method must first heat the tube or ingot, and the thick-walled seamless steel pipe produced is called a hot-rolled tube. The steel pipe produced by the hot working process can sometimes be cold worked as needed. The...

Testing of Common Defects in Seamless Steel Tube Seamless steel pipe magnetic particle testing or penetration testing can effectively detect surface cracks, folding, heavy skin, hairline, pinholes and other surface defects. For ferromagnetic materials, magnetic particle testing should be preferred, because of its high detection sensitivity; for non-ferromagnetic materials, such as stainless steel seamless steel pipe, the use of penetration testing. Seamless Steel Tube When the cut-off margin is less at both ends, the two ends are not effectively detected due to the structural reasons of the test device, and the end is the most likely location where cracks or other defects are present. If there is a potential tendency to crack at the end of the wire, the heat of welding during installation may also cause potential cracks to expand. Therefore, it should also be noted that after welding a certain area of seamless steel pipe detection, the timely detection of defects in the end of s...

Seamless steel pipe production process Seamless steel pipe production process: the seamless steel pipe is mainly through the reduction of tension to complete, the process of reducing the weight of the hollow base material is not a continuous rolling process with mandrel. In the premise of ensuring the quality of the mother pipe welding, the pipe tension reduction process is to heat the whole pipe to 950 degrees Celsius above, and then by the tension reducer (tension reducer total of 24 times) rolled into a variety of diameter and wall Thick finished pipe, the use of this process produced by the hot-rolled steel pipe and ordinary high-frequency welded pipe is essentially different from the heating furnace after the weld and the matrix of the microstructure and mechanical properties can be achieved in full, in addition, through more The tension of the pipe and the automatic control make the dimensional accuracy of the steel pipe (especially the tube roundness and wall thickness accu...

Anti - Hydrogen Cracking of Seamless Tube Materials Seamless pipeline is mainly used for conveying high pressure oil and gas near wellhead. With the increasingly serious problem of hydrogen sulfide corrosion, anti-sulfur seamless pipeline development is imminent, and anti-sulfur performance is the key to good or bad. The results show that the addition of Cu and Ni can improve the HIC performance of the seamless pipe material, reduce the S content in the steel, and reduce the content of S The sensitivity of hydrogen bubbling. With the deepening of oil and gas extraction, mining conditions are complex and in the sulfur environment of oil and gas wells more and more, hydrogen sulfide corrosion problem is very sharp. In recent years, domestic and international demand for anti-sulfur seamless pipeline is increasing. Seamless pipeline is mainly used for the delivery of high pressure oil and gas near the wellhead, is the use of seamless pipe production without the manufacture of welded ste...

High-strength seamless steel pipe strength and the use of long-term temperature The matrix is a pearlite or bainite structure of low-alloy heat-resistant steel. Mainly chrome molybdenum and chrome molybdenum vanadium series, and later developed a variety (such as chromium, tungsten, molybdenum, vanadium, titanium, boron, etc.) composite alloy steel, steel lasting strength and the use of temperature gradually increased. But the general amount of alloying elements up to about 5%, the organization in addition to pearl in vitro, also includes bainitic steel. This kind of steel in 450 ~ 620 ℃ has good high temperature creep strength and process performance, and good thermal conductivity, expansion coefficient is small, the price is low, widely used in the production of 450 ~ 620 ℃ range of various heat-resistant structural materials. Such as power plant boiler steel pipe, turbine impeller, rotor, fasteners, oil refining and chemical use of high-pressure containers, waste heat boiler, h...

The difference between precision steel pipe and seamless steel pipe 1, the main feature of seamless steel pipe is welded joints, can withstand greater pressure. The product can be very rough as cast or cold parts. 2, precision steel pipe is the product in recent years, mainly the hole, the outer wall size has strict tolerances and roughness. Cold drawn precision steel pipe features: 1). Smaller diameter. 2). High precision can be done in small quantities. 3). Cold drawn products with high precision, good surface quality. 4). The cross section of steel pipe is more complicated. 5). Steel pipe performance is superior, the metal is relatively dense. Hot rolled precision steel pipe after the difference Hot-rolled precision steel pipe with continuous casting round billet or slab as raw material, heated by step heating furnace, high pressure water descaling into the rough rolling mill, roughing by cutting head, tail, and then into the finishing mill , The implementation of computer-contro...

What are the precautions for the storage of seamless steel tubes? In the building materials industry, the development of various pipes is different. Because of their different characteristics, there is a certain distance between the pipes. Square tube, that is, such a building materials industry in a number of pipe. Is the steel through the treatment after the composition of the various characteristics of steel pipe needs to understand, but the building materials industry, the development of various types of pipe are not the same, because their own characteristics are different, there is a certain distance between the pipe. Square tube, that is, such a building materials industry in a number of pipe. Is made of steel after the composition of the steel pipe, the various characteristics of the needs of everyone to understand, but in fact because of steel and other raw materials, links on the storage of steel is the demand-specific conditions. In the storage of seamless steel pipe, t...

What is precision seamless steel pipe Precision seamless seamless steel pipe, precision hydraulic seamless steel pipe, cold drawn fine seamless steel pipe, cold-rolled fine seamless steel pipe, high-precision seamless steel pipe, fine bright seamless steel pipe. Fine seamless steel pipe classification a) steel pipe important types: DIN series of high precision fine bright seamless steel pipe, hydraulic system of public steel pipe, automobile manufacturing public pipe fine seamless steel pipe Encyclopedia of fine seamless steel pipe classification b) important scale: DIN two three nine one , DIN 2445, EN 10305, DIN 1629, DIN 1630, ASTM A 179 fine seamless steel pipe seam steel pipe fine fine seamless steel pipe classification III) important material: (E 255) ST five two (E three five five) fine seamless steel pipe classification four) important delivery form: NBK (+ N) GBK (E two five five) ST three seven. (+ A) BK (+ C) BKW (+ SR) BKS (+ SR) fine seamless steel pipe classificati...

What is the use of seamless steel pipe What is the seamless steel pipe, I believe that many people are not very understanding, in simple terms, this is actually a cold-rolled or hot-rolled way from the production of the pipeline, because the pipeline has high precision, corrosion resistance Strong and the use of high security and so on, so this pipe is often used as a fluid transport pipeline. Seamless steel pipe manufacturers related staff said that now this seamless steel pipe in the oil, gas and natural gas and other substances There is a very high penetration rate in the transport process, since the surface of the pipe is not well welded, so it can be used as a structural part or a mechanical part, etc., in addition to being used as a medium conveying pipe Such as the production of raw materials. This seamless steel pipe in the machinery manufacturing line and the use of not only can effectively improve the utilization of materials, but also can play a role in simplifying the ...

Quality requirements for seamless steel tubes Seamless steel pipe is a hollow structure, generally responsible for transporting oil, natural gas and other media.Compared with the general solid steel pipe, not only with the same bending and torsion ability, and the weight is still relatively light, is very affordable pipe. Today, the seamless steel pipe manufacturers give us a lecture, in the production of our products on the quality of what kind of requirements.First of all, to determine the composition of steel elements, steel is a very important factor in the production of seamless steel pipe, Only to control the production process and heat treatment process parameters, to be able to control the chemical composition just the second point, to ensure that the shape and size of steel, but also in the shape on the basis of its production to maintain the accuracy of production in the production, The operation of the machine, the production process, the quality of the heating, the coe...

Seamless steel pipe in the use of how to maintain the most scientific In fact, many of today's life are inseparable from the existence of seamless steel pipe, seamless steel pipe has a very significant feature is in the production process is not required for any cutting and welding, because only this will ensure that in the transmission Gas and liquid when the gas leak does not appear, so if there is welding or cutting the situation, then this seamless steel pipe used to transport is very dangerous. But it is necessary to maintain the use of things will be used for a long time, like home refrigerators, televisions and microwave ovens and the like, in fact, these appliances is the need for maintenance will be used for a long time. In fact, not just home appliances, These are also needed to maintain, especially steel synthesis, then it is more likely to rust, resulting in the use of seamless steel pipe as before, so no matter what is long as long as the use of the state will app...

The connection of fluid seamless pipe and thick wall seamless pipe The so-called fluid seamless pipe and thick-walled seamless pipe, fluid seamless pipe production process: round tube - heating - perforation - three roll inclined rolling, rolling or extrusion - Diameter - cooling - billet - straightening - water pressure test - marking - storage. Fluid seamless pipe because of its relatively low cost, and high strength, in modern social fluid transport have to play a wider range of applications. Fluid seamless pipe according to its use conditions and the actual construction conditions can be the surface of the anti-corrosion and insulation treatment, the length of the fluid seamless tube can be produced according to customer needs, the general length is between 6 meters to 12 meters , The export of steel pipe within 6 meters, the export of fluid seamless pipe but also for groove, paint, plus the cap. After the wall seamless steel pipe production is divided into cold drawing and ...

Seamless steel pipe and ordinary steel pipe were applied to where Seamless steel pipe is divided into cold drawing and hot bar, but the surface has not been treated, seamless steel pipe is divided into several kinds, with its material and the implementation of the standard, the material has ordinary pipe, alloy tube, the implementation of the standard 1, the structure used for seamless steel pipe: GB8162-99 2, the transport of concrete seam steel pipe: GB8163-99 3, boiler seamless steel pipe: GB3087-1999 4, high pressure seamless pipe for boiler: GB5310-95 (ST45.8-ⅲ type) 5, fertilizer equipment with high pressure seamless steel pipe: GB6479-1999 6, to Seamless steel pipe for quality drilling: YB235-70 7, oil drilling with seamless steel pipe: YB528-65 8, Seamless steel pipe for oil cracking: GB9948-88 9, oil drill collar for seamless pipe: YB691-70 10, automotive axle with seamless steel pipe: GB3088-1999 11, ship seamless steel pipe: GB5312-1999 12, cold ...

How to Prevent Seamless Steel Tube from Fracturing Domestic high-precision seamless steel pipe is generally by increasing the alloy in the metal approach to improve the performance of materials, seamless steel pipe in the cold drawing, the need for stress-relief annealing, the elimination of residual stress, improve the material organization, Plasticity, so as to achieve the purpose of preventing the occurrence of fracture failure of seamless steel pipe. At present, China's stainless steel seamless steel pipe are made of ordinary 45 # or 20 # steel 27SiMn steel, by cold drawing deformation of the metal strength; however, it is at the expense of metal plasticity, toughness at the expense. High precision cold drawn seamless steel pipe is based on its high dimensional accuracy and high strength properties based on the market, it must ensure that the deformation in a certain range, in order to maximize the performance of the material, reducing the material Negative Effects. Seamle...

Seamless Steel Tube Plant Introduction of seamless steel pipe production methods Seamless Steel Tube Plant Introduction of seamless steel pipe production methods Seamless steel pipe is the more common type of steel pipe, then, seamless steel pipe production methods is how? We consulted Bartlett Metal Materials Co., Ltd. of the technical staff. Look at the next technical staff is how to say. According to the seamless steel pipe production methods of different seamless steel pipe can be divided into hot-rolled tube, cold-rolled tube, cold drawn tube, extrusion tube. Hot-rolled seamless steel tubes are generally produced in the automatic rolling pipe unit. The solid tube blank is inspected and removed from the surface defects, cut into the required length, in the tube end of the perforation end of the centering, and then sent to the heating furnace heating, perforation in the punching machine. In the perforation at the same time continue to rotate and move, in the role of the roll an...

Precision seamless steel pipe characteristics and scope of application The difference between precision steel pipe and seamless steel pipe is obviously different from seamless steel pipe: the dimension precision is high and can reach 0.05mm. Precision steel pipe outer diameter surface finish high, customers can use without processing; and ordinary customers need to be seamless steel pipe lathe, polishing and other processing. Material Name: Alloy Structural Steel Grade: 14CrMnMoVB Precision Seamless Steel Tube Precision Seamless Steel Tube Characteristics and Scope: It is a weldable low alloy high strength steel with yield strength of 686MPa, which has good comprehensive mechanical properties. After different heat treatments, different mechanical properties can be obtained to suit different working conditions. Its corrosion resistance than low carbon steel (about three times). Applicable to the manufacture of various types of pressure vessels and engineering mining machinery and t...

Seamless steel pipe in the drawing process of the reasons for cracking In the production process of seamless pipe, there are cold hardening and hydrogen embrittlement phenomenon, they are caused by cold drawn seamless pipe cracking the main reason. In this paper, two phenomena were analyzed and some measures to prevent cracking of small caliber seamless steel tubes were proposed. Analysis of the phenomenon of burst Cold drawn seamless pipe is the smaller diameter of the seamless steel pipe through the drawing die to reduce the diameter of the cold formed, the process is generally annealing, pickling, drawing. Cold-drawn small-caliber seamless steel pipe in the drawing process, sometimes from beginning to end like a bamboo crack as quickly split phenomenon, we call this phenomenon unified cracking. The reasons for cracking include: (1) work hardening;   (2) hydrogen embrittlement phenomenon. 1.1 The impact of work-hardening Steel in the drawing of a large number of plastic...

Seamless pipes for petroleum purposes and categories    Oil-specific seamless tube is mainly used for oil and gas wells drilling and oil, gas transportation. It includes oil drilling pipe, oil casing, pumping pipe. The oil drilling pipe is mainly used to connect drill collar and drill bit and transmit drilling power. Oil casing is mainly used in the drilling process and completion of the wellbore after the support to ensure that the drilling process and the completion of the entire well after the completion of the normal operation. The oil pumping pipe mainly sends oil and gas at the bottom of oil well to the ground.    Oil casing is the lifeblood of oil wells. Due to the different geological conditions, the stress state of the underground is complex, and the combined effect of tension, compression, bending and torsional stresses acts on the pipe body, which puts forward high requirements for the quality of casing itself. Once the casing itself for som...

Seamless identification of shoddy methods   1. Shoddy steel pipe prone to folding.     Folding is the formation of a variety of steel pipe surface line, this defect often runs through the entire product vertical. The reason for folding is due to the pursuit of high efficiency shoddy manufacturers, the amount of pressure is too large, resulting in ears, the next rolling to produce folding, folded products will be cracking after bending, steel strength decreased.     2. Shoddy steel pipe surface often have Ma surface phenomenon.     Ma surface is due to rolling groove wear caused serious irregular irregularities of steel surface defects. As the shoddy steel pipe manufacturers to pursue profits, rolling groove rolling is often the most excessive.     3. Fake steel pipe surface prone to scarring. There are two reasons: (1). Shabby steel pipe material is uneven, many impurities. (2). Shoddy material manuf...

A steel pipe is a hollow pipe that is suitable for conveying liquids, powdery objects and gases. It is a kind of economical steel. Steel can be used to build a structure of the structure, used as a mechanical support, both to save materials, but also reduce their weight. Steel pipe plant in accordance with the production method of the steel pipe is divided into seamless steel pipe and sewn. Seamless steel pipe is mainly used for water and oil and gas transport, because it is not welded joints, durable, water vapor is not easy to leak, and that is, it can withstand the pressure. Especially the transmission of gas, the pressure is too large, it is easy to cause an explosion, for people's lives and property caused great security risks. Seamless steel pipe is also divided into seamless steel pipe and seamless steel pipe. Alloy seamless steel pipe can withstand the high pressure of 5310, mainly used for oil and gas pipelines, both safe and durable. For underground pipes, corrosion-...

Seamless Steel Pipe Process:  Seamless Steel Pipe (SMLS STEEL PIPE) Standard:  API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444, JIS G3445 DIN 2391, EN10305, EN10210, ASME SA106, SA192, SA210, SA213, SA335, DIN17175, ASTM A179… Certificate:  API 5L PSL1 / PSL2, API 5CT, ISO 9001-2008 Out Diameter:  1/8 – 36inch (10.3-914.4mm) Wall Thickness:  1.73-40mm Length:  Random Length, Fixed Length, SRL, DRL Steel Grade: API 5L :API 5L: GR B, X42, X46, X56, X60, X65, X70 ASTM A53/A106: GR A, GR B, GR CASME SA106: GR.A, GR.B, GR.CASME SA192: SA192ASME SA209M: T1, T1a ASTM A335:P1, P2, P5, P9, P11, P22, P23 ASTM A333:Gr.1, Gr.3, Gr.4, Gr.6, Gr.7, Gr.8, Gr.9, Gr.10, Gr.11 Mill Test Certificate:  EN 10204/3.1B Abstract from http://www.xysteelpipe.com/info/Seamless-Steel-Pipe-244-1.htm http://www.xysteelpipe.com/info/Seamless-Steel-Pipe-244-1.htm