Seamless Steel Pipe

Project location：Australia Product：ERW Steel Pipe Specifications：100NB-750NB Standard and material：API 5L GRB / ASTM A53 GRB/AS1163 GR350LO / API 5L GRX42 Usage：stock Estimated arrival time：July, 2023 This order is still for welded pipes supplied to well-known local inventory clients in Australia. This customer has been cooperating with Xinyue for over decades and has not had any quality issues. After years of cooperation, the customer’s recognition of Xinyue brand’s steel pipe products is extremely high. So over the years, orders have been continuously sent to Xinyue. Of course, the continuous turnover of orders not only stems from customers’ recognition of quality, but also from the service of Xinyue’s excellent sales. Xinyue service always runs through the entire process of order execution. Although we have cooperated for many times, we still carefully confirm every detail with customers in advance every time from their inquire, such as product specifications, dimensions, appearance...

Vietnam’s steel market has been rapidly growing in recent years due to the country’s infrastructure development projects. The demand for steel pipes has increased significantly as they are used in various construction projects such as buildings, bridges, and roads. Xinyue Steel, as one of the leading steel pipe manufacturers in China, has been supplying high-quality ERW steel pipes to the Vietnamese market. ERW (Electric Resistance Welded) steel pipes are widely used in various industries due to their excellent strength, durability, and cost-effectiveness. Xinyue Steel’s ERW pipes are manufactured using advanced technology and equipment, ensuring that they meet the highest quality standards. The company offers a wide range of ERW steel pipes in different sizes and specifications to meet the diverse needs of customers in the Vietnamese market. Xinyue Steel’s ERW pipes have been used in various infrastructure projects in Vietnam, including the construction of buildings, bridges, and road...

Project location：Vietnam Product：ERW STEEL PIPE Standard and material：AS1163 C350 Specifications：219.1×12.7x6000mm Application：steel fabrication Inquiry time：2022.04.15 Order time：2022.04.21 Shipping time：2022.05.29 Estimated Arrival time：2022.06.12 Xinyue has been cooperated stably with this customer for 3 years. The customer is a famous fabricator in Vietnam. Finished products mainly used for various project support in Australia. Therefore, all products require Australian quality standard. Although it is already a long-term cooperative customer. But every order for this customer is not easy. The customer’s basic steel grade requirements are C350 and above, but the weight of a each specification is less than 10 tons. For ordinary steel mills, it is difficult to book raw materials in such quantities and steel grades, which greatly increases the difficulty of order production operations. Based on the long-term and stable needs of customers and the accumulated experience of Xinyue over t...

　　 ERW Steel Pipe Preheat Deformation Technology 　　Below is the method of ERW steel pipe preheat deformation: 　　First, the rational selection. On the mold should be selected for precision messy material deformation of a good micro-deformation of steel, carbide segregation serious die steel should be a reasonable casting and quenching and tempering treatment, the larger and can not be casting mold steel can be solid solution double fine heat treatment. Reasonable choice of heating temperature, control the heating rate, the mold can be used for precision messy slow heating, preheating and other methods of equilibrium heating to reduce the mold heat treatment deformation. 　　Second, the correct operation of the heat treatment process and a reasonable tempering heat treatment process is to reduce the deformation of a useful tool for precision messy method. Precise messy mold deformation reasons are often messy, but we only need to master the deformation rules, analysis of the causes ...

　　 ERW steel pipe manufacturers, in the production of high-frequency welded pipe process, will face the tube surface was scratched the situation, the main reason for this is due to the guide roller and squeeze roller caused. The following specific analysis. 　　1. Scraping caused by the guide roll generally occurs on both sides of the high-frequency welded pipe, the characteristics of the wound is relatively large, continuous strong. Reasons include: 　　(1) The height of the guide sleeve position is not correct, such as the guide roller bearing damage, the guide roller can not be a good control of high-frequency welded pipe, so that friction with the guide sleeve caused by scratches. 　　(2) When the guide roll deviation from the high-frequency welded pipe production line rolling center line is too large, the guide sleeve and guide roller relative difference is too large, resulting in both sides of high-frequency welded pipe scratches. 　　2. Scratches caused by high-frequency weldin...

　　High frequency welded straight-seam pipe is used in high-frequency welding of the welding method，which is based on the principle of electromagnetic induction, and AC charge in the conductor, the skin effect, the proximity effect and eddy current heating effect, so that the weld edges of the steel locally heated to a molten statewheel squeeze butt welds to achieve the crystalline aggregate indirect, so as to achieve the purpose of the welds. 　　High frequency welding is an induction welding (contact or pressure welding), it does not require the weld filler, no spatter, weld heat affected zone is narrower, welding forming beautiful, good welding machinery, etc., in the production of steel pipes by a wide range of applications, also including widely used in civil construction, petrochemical, light industry and other sectors, and to this end also to achieve the maximum benefit of the national economy! 　　Electric Resistance Welded steel pipes, ERW steel pipes or high frequency welded ...

　　"ERW steel pipe" is a straight seam electric resistance welded pipe. English Electric Resistance Welding, abbreviated as ERW, is used to transport vapor and liquid objects such as oil and natural gas. It can meet various requirements of high and low pressure, and currently accounts for the world in the field of transportation pipes. A pivotal position. 　　1. The welded pipe is made of steel plate welded by high-frequency electric resistance welded pipe (ERW steel pipe), straight seam electric welded pipe (LSAW steel pipe), spiral welded pipe (SSAW steel pipe). In electrical engineering, it is indicated by "SC". It can be used as a water gas pipe or a threading pipe, which is relatively thick. 　　2. the line pipe is also the wire tube, relatively thin, with the "T", can only be used for threading. 　　3. The ERW tube is a “high-frequency resistance welded steel pipe”. It is different from the ordinary welded pipe welding process. The weld is made of the...

　　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 ...

　　ERW (ERW straight seam 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 beh...

　　In the caliber of longitudinal welded pipe production line is set welding, finishing, pipe processing, pipe casing heat treatment in one of the pipe production line. ERW steel pipe line which introduced the German SMS Meer company developed molding equipment and technology, and equipped with the world's most advanced non-destructive testing equipment, high-frequency welding equipment, heat treatment of welding equipment. 　　The welding of forming steel pipe is the core part of welded pipe line, the quality of welding directly determines the qualified rate of the product. With the power components and power electronics technology continues to develop, as well as heating, melting, welding equipment to promote the demand for induction, induction welding equipment technology has also been an unprecedented opportunity for development. Power components from the tube to the SCR, MOSFET to IGBT gradually adopted, induction device power, frequency is also gradually increased. 　　ERW pi...

　　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 deformation, resulting in weld st...

　　In the ERW steel pipe production, electric resistance welding played an important role. Some customer don't know clearly about electric resistance welding, so pipe manufacturer Prime Steel Pipe will share types of electric resistance welding for all of you. There are three basic types of electric resistance welding: solid state, fusion, and reflow soldering. 　　In solid state, also called thermo-compression, there are dissimilar materials with dissimilar grain structure, e.g. molybdenum to tungsten, which are joined using a very short heating time, high weld energy, and high force. There is little melting and minimum grain growth, but it has a definite bond and grain interface. Thus the materials actually are still in the solid state. The bonded materials usually has excellent shear and tensile strength, but peel strength is poor. 　　In fusion, either similar or dissimilar materials with similar grain structures are heated to the melting point (liquid state) of both. The subse...

　　May be there are many people know ERW steel pipe , but there are less people know much information of electric resistance welding. Several days ago, pipe manufacturer Prime Steel Pipe shared some information of that, such as spot welding. Today, we will continue this topic, Prime Steel Pipe will share the resistance seam welding for all of you. Resistance seam welding is a process that produces a weld at the faying surfaces of two similar metals. The seam may be a butt joint or an overlap joint and is usually an automated process. Resistance seam welding is different from butt welding and spot welding. Butt welding typically welds the entire joint at once and seam welding forms the weld progressively, starting at one end. It is the same as spot welding, seam welding relies on two electrodes, usually made from copper, to apply pressure and current. Resistance seam welding use a rotating disc-shaped electrode. It can pressurize, energize and drive the workpiece forward, forming a serie...

　　This year, the effectiveness of China's steel industry achieved a comprehensive upgrade, what is the main reason? Prime Steel Pipe as the leading manufacturer and exporter of carbon steel pipe , including ERW steel pipe, LSAW steel pipe, SSAW steel pipe, seamless steel pipe, etc., we think the main reason are: 　 　1. Domestic economy remain stable 　　First of all, the national economy remain stable, real estate, infrastructure, automotive and other related industries demand, become the biggest driving force of the steel industry. GDP growth 6.9% in the first half of 2017, for eight consecutive quarters to maintain the range of 6.7% -6.9%, of which real estate and infrastructure investment growth has rebounded. 　　 2. Effective supply structural reform 　　Second, the supply structural reform and DE-capacity promotion effective changed the phenomenon of excess capacity. According to the data report, five years target of excess capacity of China's iron and steel industry is ...

　　Straight seam ERW steel pipe is made with hot-rolled coil, straight seam welded steel pipe can be divided into high-frequency electrical resistance welding and submerged arc welding by different welding type. Compared the welding process of submerged arc welding steel pipe, high-frequency ERW steel pipe does not add any welding materials in welding process, weld forming has not through hot-melting state, only the weld metal goes through the re-crystallization process, so the formed welding is completely the same chemistry as the base metal. Welded steel after annealing treatment, the cold working internal stress and welding internal stress are improved, so that the straight seam ERW steel pipe with good comprehensive mechanical properties. 　　LSAW steel pipe is made by hot-rolled steel plate as raw materials and doing longitudinal welded in the high-frequency welding equipment. In the welding process it will add some filler and particle protection flux to doing submerged arc weldin...

　　Austempering is one of the effective quenching methods for reducing the deformation and cracking of seamed steel pipes (straight seam steel pipes , spiral steel pipes and erw steel pipes) and seamless steel pipe, but how to properly use the process should be based on the material, size, hardness and toughness of the steel pipe. The requirements for deformation, as well as the specific working conditions, etc., are reasonably selected. The following issues to be noted for the isothermal quenching of seamless steel tubes are summarized below for reference by heat treatment operators. 　　[1] For austempering of steels with low hardenability such as carbon seamless steel tubes, the quenching heating temperature should be appropriately increased, the stability of austenite should be increased, and the high temperature non-Bayesian in the isothermal process should be avoided and prevented. The transformation of the body. 　　[2] Austempering is limited by the size of steel and steel. In t...

　　Welded steel pipe like ERW steel pipe, is now widely used among various industries. And the types of weld pressure rolls applied the pressure require for the weld are as varied as the welding units used to supply the heat. 　　Then, how many roll units are needed in steel pipe production? 　　According to different size and shape of the product being welded, the number of rolls in the weld squeeze box is proportionate. There are no hard and fast rules; however, common guidelines for round tube or pipe size ranges are as follows: 　　3/8 to 2 in. uses two-roll units. 　　1/2 to 3 1/2 in. uses three-roll units. 　　2 to 10 in. uses four-roll units. 　　Larger than 10 in. uses five or more rolls. 　　Now with the wide demands coming from customers, there are square, rectangular, hexagonal which are welded in the finished shape rather than being reshaped after being welded round. 　　 http://www.xysteelpipe.com/info/How-many-rollers-are-needed-for-steel-pipe-production-1294-1.htm

　　Some clients would have trouble when talking about the quality of steel pipe( no matter seamless or ERW steel pipe). Today, Threewaysteel would have to confess that leave the cheap price alone, and we should take these production processes account when we discuss high quality steel pipe. 　　1. With the different standards, we should have open-hearth, basic-oxygen or electric-furnace with different chemical requirements during the whole steel pipe’s production process. 　　2. With the type difference, we should figure out the seamless and welding type before producing. 　　3. Of course, tension, bend, and flattening tests shall be performed to make sure that it must adhere to the mechanical properties of the standard. 　　4. What’s more, different steel pipes need different test before the wholesale. 　　5. Finally, suppliers should let the clients know any of the inspections and tests set forth in this specification where deemed necessary to ensure that the pipe conforms to the spec...

　　Seamless steel pipes are more expensive than ERW steel pipes with the same performance. Why? Due to the special craftsmanship, it gives special benefits for it too. Today, we can can the advantages first. 　　Increased pressure ratings: Because of no damage for the whole steel billet like the welded seam on welded steel pipe, this would increase seamless steel pipe’s ability to hold on the high pressure. 　　Uniformity of shape: Seamless steel pipe would be round for each kind of engineering project as it is never treated as welded steel pipe. Through heat, stress, and other extraneous variables to the forming process, welded steel pipe would have effect on round aspect. While, there is no trouble for seamless steel pipe. 　　Strength under loads: Due to the first two advantages for seamless steel pipe. There is no doubt that they would have powerful strength under load when they work for us. Empty pipe must always support its own weight, but when a pipe is filled with material–or un...