SSAW Pipe

Project location：Argentina Product：ERW Steel Pipe Standard and material：API 5L PSL2 46th GR.X60M Specifications： OD: 457.2mm WT: 9.52mm Lenght:12M Application：oil and gas pipeline In the steel industry, customer demands vary, but quality and delivery time are always the most critical factors. Recently, Xinyue successfully provided a high-quality ERW pipe solution for a customer, and the entire process took only half a month, perfectly demonstrating our ability to respond quickly and execute efficiently. Although the customer’s order quantity was small, the steel grade requirements for the pipes were very high, and the supplier had to be listed in the client’s approved supplier directory. Facing such strict requirements, Xinyue mobilized all available resources and actively engaged with major suppliers. Ultimately, we successfully sourced BaoSteel’s inventory, which perfectly met the steel grade and quality requirements, and ensured on-time delivery. From receiving the inquiry to finali...

Product: ERW Steel pipe Standard and steel grade: API 5L Grade B Usage: Water Transmission The bidding for this project started in the middle of 2019 until February 2021 when the customer received good news that they had won the project. ERW welded pipe, API 5L GR B, 16 and 28 inches, was officially signed in March 21 after some details negotiation. Soon we arranged production preparation and coordinated with the third party arranged by the customer to carry out the whole production supervision plan. The goods have been shipped smoothly after strict inspection by the third party. https://www.tjxysteel.com/news/South-America-Water-Transmission-Project-2063.html

Project location：Australia Product：Bend ERW steel pipe Standard and material：AS/NZ1163 C350l0 Specifications：219.1*8.2*7000mm Application：Telegraph Pole Inquiry time：2022.10.05 Order time：2022.10.05 Shipping time：2022.11.16 Estimated arrival time：2022.12.25 his customer met in 2019. They are a global company distributed all over the world, and the customer also produces steel pipes and participates in the design of many projects. The regular product purchased in Xinyue is hot bending pipe, and 7 orders have been cooperated so far. The product customer requires 0 degree impact, and the content of B shall not exceed 0.0008%. The packaging is also very strict with the customer. In order to facilitate loading and unloading, the customer asked for wooden pallets and pulley installation. For each shipment of our customers are very recognized and give 100% confidence. The customer is no exception to this order. The order is confirmed on the same day of inquiry. Now this batch of goods is on t...

 　　Defects produced in the actual production of high-frequency welded pipes (erw steel pipe) are sometimes not caused by one reason, but are usually the result of a combination of multiple factors. Welding defects may also be caused by other reasons outside the welding area, so many factors should be considered comprehensively for defects , The problem can be solved by analyzing the reasons carefully. 　　Inclusions 　　The formation mechanism of inclusion defects is that metal oxides are not extruded with molten metal, but are sandwiched on the welding surface. 　　These metal oxides are usually formed on the surface of the molten metal at the V angle. When the strip edge approaching speed is lower than the melting speed, and the melting speed is higher than the discharge speed of the molten metal, the apex of the V-shaped opening will form containing molten metal and The inclusion of metal oxides cannot be completely discharged after normal extrusion. The surface of the clean metal sol...

    With the continuous increase in the delivery pressure and steel grade of oil and gas pipelines, the requirements of ERW steel pipes for oil and gas transportation are also increasing. The number of ERW steel pipes used in submarine pipelines is relatively large, such as some oilfield group development projects and natural gas development projects. ERW steel pipe is formed by continuous roll forming of hot-rolled coils, which uses the skin effect and proximity effect of high-frequency current to generate resistance heat at the edges of the coils and cause metal melting. Pressure welding is performed under the action of squeeze rollers. Its characteristics: high welding speed, because the current energy is highly concentrated in the welding zone, the heating speed is extremely fast, so the welding speed is very high, the welding speed is generally between 10 m / min and 45 m / min; the heat affected zone is small, because the welding speed is high , The workpiece has a stron...

    The changes in the names of ERW and HFW change with the development of technology and the update of standards.     First of all, the equipment for high-frequency resistance welding steel pipes is produced in Germany, and the earliest domestic production lines are in Baoji and Jinxiculudao. These two sets of equipment are called middle straight seam and big straight seam. The early welding forms of this equipment are also two types, namely contact resistance welding and induction resistance welding. Although there are two welding methods, both referred to as ERW, but due to the consistency of the raw material coil during the early equipment, especially the accuracy of the edge The control and control of foreign equipment's configuration control are not good, resulting in unstable quality of contact welding, relatively speaking, the production rate of induction welding is relatively high, so the development of contact welding is lagging behind. However, with the ...

    1) Tube appearance inspection     There are two kinds of raw material sources for casing tube blanks, one is seamless tube blank, and the other is ERW tube blank. The above blanks should be inspected as follows:     The whole pipe body is smooth and clean, and there are no obvious bumps, wrinkles, pits and other defects; if it is an ERW steel pipe, it should be checked whether the burr inside and outside the weld is scraped clean and the weld bead is smooth. Whether the nozzle has bumps, burrs on the inside and outside of the laminate, whether the flat chamfer is smooth and the chamfer meets the requirements; if it is an ERW pipe, it should be checked whether there is a weld crack in the nozzle.     Measure the inner and outer diameter dimensions, wall thickness and unevenness, cutting slope, ovality, and straightness of the steel pipe to determine whether the accuracy meets the requirements. Whether there is obvious dirt on the inner an...

    The biggest difference between ERW steel pipe and seamless steel tube is that ERW has a weld seam, which is the key to the quality of ERW steel pipe. Modern ERW steel pipe production technology and equipment, due to years of unremitting efforts in the world, especially the United States, have made the seamless ERW steel pipe has been relatively satisfactory.     Some people divide the seamlessness of ERW steel pipes into geometric seamlessness and physical seamlessness.     Geometric seamless is to remove the internal and external burrs of the ERW steel pipe. Due to the continuous improvement and improvement of the structure of the internal burr removal system and the cutter, the removal of internal burrs in steel pipes of large and medium diameters has been better treated. The internal burr can be controlled from -0.2mm to 0.5mm.     Physical seamless means that there is a difference between the metallographic structure inside the weld ...

　　API early in 1926 released by the American Petroleum Institute (API) API-5L standard, initially including three steel grade A25, A, B, and later released several times. Prior to 2000, the worldwide use X70, about 40%, X65, X60 are in the 30%, a considerable number of small-caliber product oil pipeline selection of X52 steel grade, mostly for resistance welding straight pipe ( ERW steel pipe ). 　　China is currently used in the Petroleum Pipeline tube spiral welded pipe (SSAW), LSAW pipe (LSAW), electric resistance welded pipe (ERW). Diameter less than 152mm selection of seamless steel tubes. Of the late 1960s to the 1970s, spiral pipe plant rapid development of crude oil pipelines almost all spiral welded steel pipe, "West-East pipeline region selection spiral welded steel pipe. The spiral welded steel pipe of the disadvantage is the internal stress is large, the dimensional accuracy is poor, the probability of generation of defects. According to expert analysis, should adopt t...

　　During the high frequency welding process, the welding technology, quality control process parameters, the impedance of the induction coil and the position of the placement has significant influence on the ERW steel pipe quality. 　　1. Control the steel pipe weld gap 　　If the weld gap is too much, it might increase the possibility of weld seam cracks. If the weld gas is too small, it will cause weld burning, molten metal splashes due to the excessive heat. It will affecting the quality of welding seam in the end. 　　2. The position of the high frequency induction loop 　　Induction loop should be placed in the same center line with the steel pipe. The distance between induction loop and the squeeeze roll end should be controled close enough without burning squeeze rollers premise. If the induction loop from the squeeze roll farther, the effective heating time will be longer and the heat affected zone will be wider. This will cause the strength of the steel pipe weld penetration ...

　　We know the quality of the raw materials have a deep influence on the quality of the ERW steel pipe , but how? Below we will discuss how the quality of steel trips influence the quality of ERW steel pipe during the production. 　　1.Why the mechanical properties of the steel trips can affect the quality of ERW steel pipe? 　　For ERW steel pipe, the commonly used steel type is carbon steel. The steel standard and grade includes API 5L GR.B -X70, ASTM A53 GR.A/B/C, ASTM A500 GR.A/B/C etc. 　　If the strip yield point and tensile strength is too high, it will cause difficulties during the steel strip forming. Specially for producing thick wall ERW steel pipe, cracking is easy to happen during pipe welding due to the large resilient materials, large deformation stress. When the tensile strength of steel strips exceeds 635 MPa and elongation less than 10%, cracking can be happen during the welding process. When the tensile strength is less than 300MPa, the strip material in the molding p...

　　During the high frequency welding process, the welding technology, quality control process parameters, the impedance of the induction coil and the position of the placement has significant influence on the ERW steel pipe quality. 　　1. Control the steel pipe weld gap 　　If the weld gap is too much, it might increase the possibility of weld seam cracks. If the weld gas is too small, it will cause weld burning, molten metal splashes due to the excessive heat. It will affecting the quality of welding seam in the end. 　　2. The position of the high frequency induction loop 　　Induction loop should be placed in the same center line with the steel pipe. The distance between induction loop and the squeeeze roll end should be controled close enough without burning squeeze rollers premise. If the induction loop from the squeeze roll farther, the effective heating time will be longer and the heat affected zone will be wider. This will cause the strength of the steel pipe weld penetration ...

　　Steel pipe have a hollow section, and the length of which is much larger than the diameter or circumference. So, what steel pipe, from welded type like ERW steel pipe to seamless steel tube, can do for us? 　　Please don’t look down upon these steels, not only are steel pipes used to transport fluids and powdery solids, exchange heat energy, and make mechanical parts and containers, it is also an economical steel. 　　Steel pipe is hiding in our daily li ves, we just don’t find it clearly. For example, your shoe rack, the knife you use for cooking, the tools you use for cooking. Your car, the road you go to work...there are too many and there are countless. 　　There is no doubt that we could not live well without steels. I am no even being joking! That’s all true! 　　The use of steel pipe to manufacture construction structure grid frame, prop and mechanical support can reduce the light weight, save the metal 20 / 40, and realize the mechanization of industrial construction. Making ...

　　In the production of ERW steel pipe process will encounter many problems, the following will mainly talk about some of the issues given diameter machine analysis. In contrast, the lowest rate fixed problems mill, and the process it is also relatively simple, common sizing mill's production somethin There are several types. 　　1, Sizing scratch scratches primary attack in the horizontal and vertical axis on both sides of the pipe cross-section, multi-formed from flat roll and vertical roll pass of marginal. Especially after pass marginal R rounded sharpened, the following questions are presented once may cause injuries. 　　2, Drill pipe drill pipe doubt is rare, the chance of comparison usually thin-walled tube produced episodes, and this is because of poor primary rigid thin-walled tube, and because the wall is thinner simple roll bite. So assume the following questions will form a drill pipe in the production of the incidents. 　　3, The tubes not round tube-round shape is us...

　　High frequency electric resistance welded pipe, also known as ERW steel pipe . ERW has many advantages, such as high production efficiency, low-cost, saving in material, and easy-to-automation. It is a kind of important welding technology which is widely used in various industrial sectors such as aviation, energy, electricity, automobile, light industry and so on. 　　ERW steel pipe uses hot rolled coil as raw material, its wall thickness is uniform and is controlled at ± 0.2mm or so, the two ends of the pipe should repair the end, bevel, and cut to length according to the United States APl standard or GB/T.1 standard. Compared with the submerged arc welding process, ERW welding process does not add any welding materials, weld molding has not been hot-melting state, the weld metal goes through the recrystallization process, so the formed weld is completely the same chemistry as the base metal. The steel pipe after welding will be annealing, manufacturing cold forming internal stress,...

　　Straight seam welded pipe (ERW straight seam welded steel pipe) is formed on the hot rolled plate of the forming machine, the skin effect and proximity effect of the high frequency current, melting of the pipe edge heating to the extrusion roller pressure welding to achieve production. The application of high-frequency resistance welding method in pipeline production in the 1950s has witnessed more and more mature production technology and continuous improvement of product quality in the past decade or so. 　　First of all, in the quality of raw materials, the production of ERW steel pipe has been significantly improved, the composition of the steel design of low carbon, low P, S, micro-alloying; smelting process smelting, ladle refining, vacuum degassing, continuous casting and other new technologies In addition to the ERW controlled rolling and cold rolling process, the technology has enabled the appearance size of the hot rolled steel strips of large and medium caliber ERW steel ...

　　Oxyfuel and plasma cutting play an important role during the production process of making welded steel pipe like ERW steel pipe . And forgetting to grind the joint after oxyfuel or plasma cutting would be an common mistake for a new welder. 　　Today, we can make it alone to make an essay to tell all of us who need to choose steel pipes or producing tubes. Adding a layer of oxide to the cut edge during the oxyfuel and plasma cutting processes would be the necessary step for steel pipe. And here are the notices: 　　First of all, the oxide layer has to be removed prior to welding due to the higher melting point of oxide than base metal. 　　What’s more, the oxides can also remain in the weld and cause porosity, inclusions, lack of fusion and other defects. 　　In addition, welders have to keep in mind to grind the joint down to the parent material prior to welding, as well as grind the inside and outside diameters of the pipe to remove these oxides and other potential contaminants.

　　Steel pipe have a hollow section, and the length of which is much larger than the diameter or circumference. So, what steel pipe, from welded type like ERW steel pipe to seamless steel tube, can do for us? 　　Please don’t look down upon these steels, not only are steel pipes used to transport fluids and powdery solids, exchange heat energy, and make mechanical parts and containers, it is also an economical steel. 　　Steel pipe is hiding in our daily lives, we just don’t find it clearly. For example, your shoe rack, the knife you use for cooking, the tools you use for cooking. Your car, the road you go to work...there are too many and there are countless. 　　There is no doubt that we could not live well without steels. I am no even being joking! That’s all true! 　　The use of steel pipe to manufacture construction structure grid frame, prop and mechanical support can reduce the light weight, save the metal 20 / 40, and realize the mechanization of industrial construction. Making ...

　　If your customer has affection on large diameter steel pipe, no matter ERW steel pipe or LSAW type, you would figure out the advantages for it. Thus, you will finally figure out the special treatment for large diameter steel pipe. 　　In order to achieve the standards like API, we know that large diameter pipe would have strict production process. Thus, it can serve on the engineering project like bridge piling, underwater piling, piling high-rise buildings. 　　With its good adhesion, corrosion resistance, and other traits, we will make large diameter steel tube improve traffic and transportation efficiency, reduce delivery pressure loss. 　　Coating solvent-free is another character, no leaking substances, and thus will not contaminate the transmission medium, thus ensuring fluid purity and hygiene at -40 ℃ to +80 ℃ range can be used alternately hot and cold cycles, aging, no cracks, which can in cold areas such harsh environments.

　　Welded steel pipe is a hot-rolled coil after molding machine, the use of high-frequency current skin effect and proximity effect, so that the edge of the tube is heated to melt under the action of squeezing rollers pressure welding to achieve production. 　　High frequency resistance welding method used in pipe production of the 1950s. Over the past decade, the production technologies are maturing, continuously improve product quality. 　　First, ERW steel pipe used in the production of raw material quality has been significantly improved, the steel component design of the low C, low P, S, micro-alloying; smelting process smelting, ladle refining, vacuum degassing, continuous casting and other new using technology; ERW pipe - ERW rolling process controlled rolling, controlled cooling technology enables the use of medium and large caliber ERW steel pipes hot strip appearance of size, appearance quality, physical and chemical properties greatly improved. On behalf of my hot strip high...