ERW Steel Pipe

    Straight seam steel pipe is the production of steel plate, and spiral welded pipe is hot-rolled coil production. The rolling process of the hot strip mill has a series of advantages, and has the ability to obtain the metallurgical technology of producing high quality pipeline steel. For example, a water cooling system is provided on the output stage to accelerate cooling, which allows the use of low alloy components to achieve specific strength grades and low temperature toughness, thereby improving the weldability of the steel. But this system is basically not in the steel plate production plant. Coil alloy content (carbon equivalent) is often lower than similar grades of steel, which also improves the weldability of spiral welded pipe. It should be noted that, since the coil rolling direction of the spiral welded pipe is not perpendicular to the axial direction of the steel pipe, the rolling direction of the steel plate of the straight seam steel pipe is perpendicular to...

    Discussion of steel pipes’ function is here among supplier’s communication meeting recently.What surprise us is that as time goes by, with the help of advanced technology, low pressure SSAW can also used for high pressure purpose.     Spiral welded pipe, with the name of spiral, we know that this is a kind of steel pipe that has a seam rolling around its entire length in a spiral form.     In the past, because of the manufacture's method, this kind of steel pipe can only be produced for low pressure and structural applications. With the improving of technology, the production of large hot rolled coils of sufficient width and the development of dependable non-destructive testing methods, it is now possible to produce Spiral Weld pipe for high-pressure service. For Sara, I think this is not the only one steel pipe for changing. As for ERW steel pipe, some customers would say that this kind of steel pipe cannot used for oil or gas transportation due to...

    I'm a steel pipe and I know it is necessary for me to have a rest. Just like anyone else, feeling the heat and feeling the cold would be normal emotion for steel pipes, like seamless steel pipe, ERW steel pipe and other steel pipes.     As a steel pipe, it follows that any evaluation of a steel pipe's life and a man's life by reference to a common time-scale must result in grievous error. For example, as water steel pipe for transportation of water, human should take care of the rust-proof from water. Thus we may have a long life service. The more the humans show me sympathy with good care, the more I am inclined to forget that I am a steel pipe.     As for oil or gas steel pipe, we would think that high quality production process would be an important step for our masters if they want us to have a good service during our work time. There are different materials, different standards, our masters should have a better notice and a good choice for the ...

    Quality would be the first factor for wholesale so that even for suppliers, they would make all of quality things done before they sell products for clients. Like the spiral welded pipe, they would have special testing methods for quality control before the negotiation with clients.     The following facilities are utilized for ensuring stringent quality standards. Xinyue steel, as supplier of various steel pipes, has adopted some of the testing methods for customers:     Universal testing machines(digital): This equipment is for material testing, like the mechanical properties (Ultimate tensile strength, Yield strength, Elongation).     Ultrasonic testing machine: This is for checking strip lamination and flaw detection on welds for pipes in auto mode. It is mainly used for chemical component analysis to make sure the structure's good service.     Metallurgical microscope: In order to check and evaluate the grain size and st...

    We cannot look down upon ERW steel pipe nowadays with the advanced technology in it. No doubt that lots of customers would choose seamless steel pipe if we throw cost away. However, now we can even take cost and high quality into consideration and finally get the ERW steel pipe.     Yes! That’s the power of the technology with times going on. It would be a big trouble before for the research of how to increase the welded seam impacting toughness of ERW pipe among the technology of pipe manufacture. Now with the improving of technology, it is no longer a big problem anymore. Thus, even for lots of high pressure work, we can use ERW steel pipe to deal with. Under this situation, ERW casing is applied widely in oil and gas industry and substituted for seamless tubing for its high precision, excellent properties, easy controlling of quality and low cost etc. Finally, lots of clients have seen the obvious economic and social benefit which can be achieved by using ER...

    As the individual quality of spiral steel pipe is relatively large, it must be stacked in the outdoors, but it will be difficult to avoid the sun and rain, so the problem has been plagued with rust spiral pipe storage time and conditions. Therefore, we need to conduct a comprehensive understanding of the spiral steel pipe rust prevention.     The main use of steel wire brush and other tools on the steel surface grinding, spiral steel pipe cleaning and preheating can be removed loose or tilt of the oxide, rust, welding slag and so on. Hand tools to achieve rust Sa2 level, power tools rust can be achieved Sa3 level, if the steel surface attached to a solid oxide scale, tool rust effect is not ideal, less than anti-corrosion construction requirements of the depth of the anchor pattern. Pickling     The use of solvents, emulsion cleaning low pressure fluid delivery welded steel pipe surface, in order to achieve the removal of oil, grease, dust, lubrica...

    Different type would have different function for each type of the steel pipe. Thus there are the categories of seamless steel pipe, ERW steel pipe, LSAW steel pipe and also the SSAW steel pipe. Precise pipe would have certain usage for main area.     Main types of the steel pipe are:     Standard pipe: there are three different types of standard metal pipes which include welded pipe(ERW steel pipe, LSAW steel pipe, and SSAW steel pipe), seamless steel pipe(carbon stainless steel pipe) and galvanized steel pipe. Seamless steel pipe and ERW steel pipe would be better when adopted in oil and gas transportation due to high pressure taking with good quality among the pipes.     Oil country tubular goods(OCTG): extraction of oil especially in deep sea needs high quality extraction equipment. Thus line pipe like the ERW, seamless steel pipe which are generally produced to API 5L Specification and are available in X42, X50, X60 etc. Grades for t...

    Spiral welded pipe, made from cold formed or hot rolled coil in a single and continuous process, is widely used in our daily life when we pay attention to it. Clients would know where to find the spiral welded pipe and with the development of technology, there is no doubt that more and more places can use it.     Foundation is a nice place to find the spiral welded pipe. If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them. So does for the spiral welded pipe. They are the basic foundation for each house when we build them, and there is very clear that high quality spiral welded pipe can supply us long life service for our water supply and other transportation supply.     At the same time, chimney & ventilation ducts need spiral welded pipe too. Chimney, as we all know its function, has the similar function with ventilation ducts. Under this situation, basic ventilation...

    We cannot look down upon ERW steel pipe nowadays with the advanced technology in it. No doubt that lots of customers would choose seamless steel pipe if we throw cost away. However, now we can even take cost and high quality into consideration and finally get the ERW steel pipe.     Yes! That’s the power of the technology with times going on. It would be a big trouble before for the research of how to increase the welded seam impacting toughness of ERW pipe among the technology of pipe manufacture.     Now with the improving of technology, it is no longer a big problem anymore. Thus, even for lots of high pressure work, we can use ERW steel pipe to deal with. Under this situation, ERW casing is applied widely in oil and gas industry and substituted for seamless tubing for its high precision, excellent properties, easy controlling of quality and low cost etc. Finally, lots of clients have seen the obvious economic and social benefit which can be achi...

    Non-standard steel pipe is relative to the national standard seamless steel pipe in addition to the national standard of the special-shaped steel pipe, in the production of seamless steel pipe in accordance with national routine requirements to the size of the outer diameter, wall thickness classification, and allow a certain error, which is within the scope called national standard. In actual use, often the national standard has some limitations, which corresponds to the emergence of non-standard seamless steel pipe, non-standard steel pipe specifications to supplement the GB standard seamless steel pipe production and is not said the quality of seamless steel pipe than the national standard.     In the production of non-standard steel pipe, some of the national standard seamless steel pipe or round steel as a tube production, because the sales volume is small, often the price is higher than the ordinary GB seamless steel pipe, but non-standard seamless steel...

    For the astm standard, different material with different steel grade,besides, their mechanical properties and chemical composition, metallurgical properties are all different.     There are list for astm standard with different steel grade.     ASTM A53 / A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless     ASTM A106 / A106M Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service     ASTM A134 - 96 Standard Specification for Pipe, Steel, Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over)     ASTM A135 / A135M Standard Specification for Electric-Resistance-Welded Steel Pipe     ASTM A139 / A139M Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)     ASTM A178 / A178M Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheate...

    Process equipment distinction: cold drawn seamless steel pipe is usually 0.5 ~ 100T single-chain or double-chain cold drawn machine. Finished seamless steel tubes are usually carried out on a two-roll mill where the steel pipe is rolled in a ring-shaped bore formed by a variable cross-section round hole and a stationary tapered head.     Production of the product difference: cold drawn seamless steel pipe can produce thin wall thickness of the cold drawn steel pipe, cold drawn shaped steel pipe, such as plum tube, hexagonal tube, bread tube, etc .; finishing seamless steel pipe relative to the wall thickness range Large, can now finish rolling 0.8-40mm.     Wall thickness deviation difference: cold-drawn seamless steel pipe without cold-rolled seamless steel pipe wall thickness deviation is small, so cold-rolled precision seamless steel pipe for the requirements of wall thickness, diameter size deviation of the strict customers, choose cold rolling...

    Oil is now the world's most important energy, its use is very extensive, a lot of equipment need to use oil can be normal operation. For example, we often use cars, aircraft, generators and so on. If there is no oil, then our life will be a very big change.     So now, oil drilling has been carried out in the uninterrupted. In the oil drilling time, thick-walled seamless steel pipe with this material is widely used. Many people can be more puzzled, thick-walled seamless steel pipe is hollow, its strength should be small, not as good as the use of solid steel column.     Indeed, the solid steel column compared to thick-walled seamless steel pipe, its strength is much higher. However, the strength of thick-walled seamless steel tubes is still very strong, the most important thing is that it has a very big advantage, that is, its vibration is very small. After all, thick-walled seamless steel pipe is hollow, in the drilling time, it can be a good tran...

    1. Repair mouth     In order to ensure the quality of the welding, the welding is carried out before the full inspection and correction, so that the pipe end, bevel angle, blunt edge, roundness, etc., are in line with the requirements of the interface size, individual steel pipe needs In the field to do groove processing, the use of gas welding cutting, remove the slag and then grinding with a grinding wheel.     Counter operation procedures are: check the interface connector size → clear chamber → determine and adjust the longitudinal seam of the steel pipe staggered position → the first pipeline straight → adjust the gap size of the counterparts → leveling the mouth → straight → straight line → spot welding     2. Welding     Interface welding using arc welding, once down the base, two times to survive, each weld are welded once, each layer of welding lead-off arc to be staggered.     A. Pipe joints should be f...

    In the daily pipeline welding, in order to obtain high-quality welding effect, in addition to equipped with a good welding equipment and skilled welders, welding preparation is also a very critical step, then the specific need to do something?     (1)Clear the nozzle at the floating rust, dirt and grease.     (2)Steel pipe with steam welding or mechanical cutting, the cross-section should be straight to ensure that the pipe is completed with the concentricity of the cut, cut in the welding before the removal of burrs or attachments.     (3)When the three holes in the pipeline to open the hole, should be carried out in the mouth, the tube should be removed clean residue, saddle-shaped opening height should not be less than 1.     (4)In order to ensure that the pipe wall during the welding process can be fully welded, the nozzle should be made groove, groove form can be selected according to the thickness of the wall.   ...

    1、 Chemical composition     In order to improve the uniformity of chemical composition and the purity of steel, reduce the non-metallic inclusions of the tube and improve its distribution, often use the furnace refining equipment for the molten steel Refining, and even the use of electroslag furnace on the tube for remelting refining.     2、Dimensional accuracy and shape     The geometrical dimensions of the seamless steel pipe mainly include the outer diameter of the steel pipe, the wall thickness, the ellipticity, the length, the curvature, the cutting angle of the pipe end, the angle of the groove and the cross section of the blunt edge and the opposite.     3、The surface quality     The standard specifies the "smooth surface" requirements of seamless steel tubes. Common defects are: cracks, hairlines, inside the fold, outside the fold, rolling, within the straight, outside the straight, from the layer, scar...

    With the better life service for all customers and the need for LNG is also increased by the urbanization. Under this situation, the need for various steel pipes like the seamless steel pipe which is used for the transportation of it is also increased.     According to the data coming from BP World Energy Statistical Yearbook 2016, pipeline gas is accounted for 67.5% of the world's natural gas trade and LNG supply accounted for 30.1%. We can figure out that the proportion by using gas for daily life is high. Thus there is no doubt that we should consider which kind of steel pipe would be the best option for the gas's transportation.     For example, we all know that pipes like ERW steel pipe and seamless steel pipe are used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the sa...

    The news reading from says that there are lots of steel companies have stopped production for steel products like the seamless steel pipe, ERW steel pipe and spiral steel pipe.     Here is the question: Where to buy spiral welded pipe when stop production is here? How’s the change for steel products due to the stop production?     Aaron gets the data that maybe some of clients cannot get the products with the considerable price due to the steel products’ shortage. It may not so easy to get spiral welded pipe used for low pressure liquid delivery, such as water, gas, and oil; construction and piling with standard:API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, IS now. In addition, the price is increased nowadays. For example, you can read the news from our website that ten days ago, the SSAW steel pipe with API 5L is 595 dollars per ton. Now it is the 605 dollars per ton.     You may better to have a contact with steel pi...

    Seeing and having been through are two different concept. So does for the products quality, like the seamless steel pipes with the plastic pipes. Actually, we can recognize the difference very easy once we use them for a while.     Sometimes I would think that I cannot feel so real if I don’t through it by myself or see my best friend through it right now. For example, you would feel so comfortable when the sick has gone and you would feel so terrible when it comes like you would breakdown. At first, I choose the plastic pipes for the toilet, however, it breaks often and makes me crazy for the repair, especially for the situation of heating makes something expand and cold makes it contract. Under this situation, finally I decide to choose the steel pipes and the terrible dream has gone in winter and summer so that I never ever need to worry about this anymore.     With surface’s fusion bond epoxy coating, coal tar epoxy, 3PE, vanish coating, bitumen...

    High-precision cold drawn steel pipe is a new type of high-tech energy-saving products. In recent years, the use of this technology to produce precision steel pipe has been widely used in domestic hydraulic, pneumatic cylinder, coal downhole stent (pillar), oil pump pipe, jack and other manufacturing areas. High-precision cold drawn precision steel pipe to promote the use of saving steel, improve processing efficiency, energy conservation, reduce the hydraulic cylinder, cylinder processing equipment investment is important.     Cold-drawn way: the production of high-precision cold-drawn tube ─ ─ hydraulic cylinder compared with the traditional cutting process, has the following characteristics:     (1) High production efficiency: the traditional method of production of an inner diameter of 420 mm, 12 meters long cylinder to be 154 hours, with cold drawing method of production only 4 minutes.     (2) High rate of genuine: the boring of th...

    Corrosion would be a big trouble for various steel pipes so that manufacturers are trying to figure out the best way to solve this problem. And for welded steel pipe, like ERW steel pipe, we should pay more attention to it.     What cause the corrosion actually? To some extent, we can say that due to the environment is full of oxygen so that the corrosion probability would be higher than the lower oxygen places. Under this situation, reducing oxygen would be a nice try for us. Controlling the amount of hydrogen in the weld pipe’s production process through other means, such as using a low-hydrogen filler metal, is a good complement to proper preheating. Both contribute to a reduced risk of weld failure and cracking. We know that joints would be weakness for welded pipes. Seamless steel pipe would be our first choice if we need to transport some high pressure gas or oil. Of course, ERW steel pipe with high quality joints combination is also great for transportin...

    1. Manufacturing method     (1) The use of hot-rolled steel belt to do billet, often temperature spiral molding, spiral seam using automatic submerged arc welding, internal and external submerged arc welds are not less than one.     (2) Steel pipe on the allowable to the head of the weld, steel and the end of the pipe end of the distance of not less than 300mm. The purchaser negotiates with the manufacturer to allow the head weld to be at the pipe end, but there should be a circumferential distance of at least 150 mm between the head and the corresponding tube end screw candle.     (3) Docking pipe allows the same specifications and the same type of two short section of a steel pipe, each section of the length of short steel pipe shall not be less than 2m, both sides of the ring weld seam should be staggered, the ring distance Less than 150mm.     2. The type of steel     The scope of the standard steel pipe shou...

    Anticorrosive spiral steel pipe is suitable for both the outer wall of the living resource transportation pipeline. The anti-corrosion of the equipment of the transport medium in the industrial production can be effectively waterproof and the anti-leakage, which can improve the service life of the pipeline.     Note of anti-corrosion spiral steel pipe construction:     First, the construction should see whether the groundwater and rain water has been exposed to the pipeline, if the water contact with the pipe after the pipe jacket to do dry treatment.     Second, in the installation of pipe at the same time, should be lightly loaded, to prohibit impact and fall.     Third, the insulation layer of the insulation pipe is prohibited from colliding with the burning fire, to prevent the insulation layer was burned.     Fourth, the pipe fittings should be stored in the relatively flat ground, neat code release, the hei...

    When everyone purchase the SA 213 boiler tube always worry about its quality problems, there are some simple quality identification methods.     First, low quality SA 213 boiler tube prone to fold. Folding is a variety of polylines formed by the surface of the SA 213 boiler tube, which often runs through the longitudinal direction of the entire product. The reason for the folding is due to the high efficiency of the poor manufacturers, the amount of pressure is too large, resulting in the ear, the next rolling to produce folding, folding products will crack after bending, SA 213 boiler tube strength decreased.     Second, poor quality SA 213 boiler tube surface prone to scarring. There are two reasons:     1. Poor SA 213 boiler tube material is not uniform, more impurities.     2. Poor quality manufacturers guide guide equipment simple, easy to sticky steel, these impurities are easy to produce scar after the bite roll. ...