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You have many options when it comes to choosing the right water pipes for your home. Pipe Material selection is important for replacing plumbing pipes for many reasons, including cost, longevity, environmental effects, and water quality. Get the details of the advantages and disadvantages of water pipes and pipe fittings from a skilled plumber, ranging from PVC to PEX to copper and brass, by consulting one.

How Are Water Supply and Drain Pipes Made? What Materials Are Used For Them?

Cast iron, PVC, or ABS can be used for plumbing waste (drain) lines.

Chromed brass, copper, galvanized iron, CPVC, and PEX are among the materials used in water piping supply lines. The main sewers in older homes still contain lead pipes, which should be replaced as soon as possible. Cast iron pipes, polyvinyl chloride (PVC), or ABS (acrylonitrile butadiene styrene) are common sewage pipes. Gas pipes are mostly made of black iron, and lead pipes still exist in older homes.

What should I do if my pipes need to be replaced?

The lead pipes in your home may have been constructed in the early part of the twentieth century, which means they were designed for long-lasting use. pipe for water But they can also be prone to injecting lead into the water supply, resulting in irreversible health effects. Polybutylene (PB) pipes are more likely to leak and explode if your home was built from 1970 to 2000, so if you have them in your home, call a professional plumber as soon as possible to have them replaced. If your home has lead or PB pipes, contact a professional plumber pipes immediately to get them replaced as soon as possible.

As a matter of fact, PVC and PEX are two of the best materials that are now available to consumers. 

Unlike old copper supply lines, the new aluminum supply lines will last for over a century (80 years for copper lines). They will not leak, crack, or pollute the water you will receive from the system.

The other symptoms that you should replace your plumbing pipes are discolored water, which can indicate that your pipes are corroding, and bubbling drains, which indicate that you have a sewer line problem. Before the problem worsens, contact a professional plumber as soon as you see any of these signs that your plumbing pipes need to be upgraded or replaced.

Which pipes would be the best choice ?

There are a variety of types of pipes that can be installed in your home and we’ve provided a detailed breakdown of each type of pipe.

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What Is Heating Pipework?

The heating pipework in your home is the pipe network that carries hot water around your homes and provides much-needed heat to radiators and other appliances in your home. Generally, the heating pipes are made up of plastic or copper material, although older systems may have used lead or steel pipes instead of copper or plastic. It is appreciated that copper is used most often for new installations due to its durability and good heat conductivity.

 Underfloor heating systems are often designed with plastic pipes because they are lightweight and easier to install than metal pipes. Furthermore, they do not corrode like metal pipes, so they should last for many years without needing maintenance.

How Does Heating Pipework Work?

It is a common practice to pump hot water throughout the property through the heating pipework, transferring heat to radiators and other appliances as it travels. There are some systems that use immersion heaters, solar-powered water cylinders, and even the boiler to provide the hot water. This pump, controlled by a thermostat, circulates the water throughout your home. It is a constant temperature system that keeps the water temperature at a constant level, which makes for a comfortable and efficient pipe heating system.

How Is Heating Pipework Fitted?

There are three most common ways to connect your boiler to your radiators or towel rails in your home: a single pipe loop, a feed and return pipe or a microbore system. Make sure that your heating pipes are supported underneath the floorboards so they will not put too much weight on them during installation. In order to reach areas in your home where there are radiator foundations, you can use risers or hangers for these supports, and you can also accommodate any height differences between rooms.

It is becoming more common to find hardwood floors in modern properties, but this installation means that it is not suitable for areas with solid floors. There are usually high-level feed tubes incorporating into these pipework connections fittings that will connect to a single or adjacent radiator. When each space is its own dwelling space, these joists are usually installed on the ceiling from overhead, if it is their own home.

During the installation of high-level feed pipes, it is necessary to insulate them to prevent heat loss in the pipework. If you prefer, piping for radiators

you can insulate pipework elsewhere, and this will likely further enhance your energy conservation program.

Pipework Installation Options

• Single Pipe Loop

A single pipe loop system involves a single pipe loop that runs from and returns to the boiler. All radiators are positioned along this pipe with the radiator plumbing connections all leading to the same pipe. Convection occurs as hot water travels along the pipe from the boiler, causing the heated water to rise into the radiator,hot water boiler heating system piping thus sending the cooler water back to the pipe as it travels down the pipe.

A major drawback of a pipe arrangement of this sort is that the first radiator is likely to heat up much faster than the second and third ones, as well as the others. The final radiator pipe layout of the system will, as a result, be significantly cooler in comparison with the original radiators on the pipe run because it has already transmitted the majority of its heat to them.

Theoretically, any number of domestic radiators can be installed on one loop of pipe, but there is no doubt that the more radiators you install, the greater will be the difference in cooling between the first radiator and the final radiator.

The single pipe loop system, on the other hand, is more often seen in industrial settings, where the loop pipe can be extremely long and even connected to heat pumps, as opposed to residential buildings where the loop pipe might be extremely large. In modern times, the pipework installation in the home is far more likely to follow a more efficient pipe fitting arrangement, and not to follow the single loop line.

• Feed And Return Pipes

Compared to single pipe loop systems in which only one pipe is used, feed and return pipe arrangements work much more efficiently. There are many different types of radiators in a home, however, the most important ones are the feed pipes, which are where the heated water is transferred to each radiator (the feed pipe), whereas the opposite end of each radiator is connected to a separate common return pipe. Due to this fact, the temperature of the water infiltrating each domestic radiator is pretty much the same. As a result of that, each heating system should emit very similar amounts of heat.

There is an automatic bypass valve, commonly known as a pressure relief valve, which is connected to the feed and return pipes, which enables the pump to transport boiler water to the radiators in the event that all radiators are turned off at once.

A circulating pump is generally limited by the scope of its flow restriction, because the amount of radiators required is usually limited by the number of radiators that are required. As a general rule, a standard pump for the domestic feed and return pipework will be sufficient to supply up to 12 radiators or heated towel rails.

Having a large piping system can also limit the number of radiators you can install. It is common for the main pipes entering and exiting the boiler to be sized at over 22mm, with smaller pipework that is usually 15mm or less tailing off to feed a few radiators or other heating elements. A residential radiator’s size will be determined by the length of the 15mm pipes. Just how many radiators can be fed using these smaller pipes will differ according to the length of those 15mm pipes.  

Modernizing this setup, sometimes referred to as a two-pipe system, makes it much more likely to be found in contemporary homes, and it is typically better suited to serve domestic needs in residential properties, as it is more likely to be found in contemporary homes.

• Micro Bore Piping

A micro bore piping arrangement uses standard pipework for the feed from the boiler to the manifolds, and the return from the manifolds to the boiler in other words, or the return in technical terms, to be more precise. In most cases, the piping between the manifolds and radiators usually measures between five and ten metres. Small pipes (typically 8mm in diameter) are attached to each manifold, connecting it to several radiators.

There could be a reason as to why special radiator installation techniques are utilised as a way to ensure that both the feed and return micro bore pipes are connected to the same end of each radiator. On the other hand, the pipes may be connected at opposite ends of the radiators.

There is also a type of pipework which is known as micro bore pipework system, in which there is a pressure relief valve located between the return pipes and the boiler feed in order to protect the boiler from being damaged when all the radiators are turned off.

One of the most prominent advantages of a micro bore piping radiators arrangement is that the smaller pipes do not have the capacity to carry as much water as larger pipes, so there is a reduced amount of heat lost over each pipe run with micro bore piping. In addition, micro bore pipes can be shaped quite easily during fitting, and they require fewer joints than other types of pipes.

The disadvantage of this method is that the pipe size can also work against it in some ways because they can become blocked quite easily as a result of internal sediment, which is also a disadvantage. The pump will also have to contend with an increase in resistance when transporting water from the boiler, which in turn will lead to the pump being more susceptible to wear as a result.

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Cold-forming a sheet of steel into a cylindrical shape is the process that is used to manufacture electric resistance welded pipe (ERW pipe). As a result of passing electric current between the two edged of the steel, the heat builds up to a point where the edges are forced together to form a bond between them without the need to use filler material to make the bond stronger. 

It was originally the case that this manufacturing process used a low frequency AC current to heat the edges. 

There was a low frequency process that was used from the 1920’s to 1970’s. As of 1970, the low frequency ERW process has been replaced by a high pipework fabrication pipe frequency ERW process that produces a higher quality of weld than the low frequency ERW process.

In the past few years, the welds used in low frequency ERW pipes have been found to be susceptible to selective seam corrosion, hook cracks, and inadequate bonding of the seams, so low frequency ERW pipes are no longer made using this method. Pipes are still manufactured using the high frequency process in order to be used in the construction of new pipelines today.

1. Cold-forming
2. Passage of current
3. Forming
4. Welding
5. Sizing and cutting

It is important to understand that there are a number of materials used in construction, and pipes are among the most common materials used. It is essential for them to be robust enough so they can endure a variety of environmental conditions that may result in significant fluctuations in temperature or pressure. For this reason, there are several production techniques available to produce pipes of industrial quality. An example of one of these methods is ERW steel pipes, which are manufactured with a welding process. 

Aside from the many qualities of steel, ERW pipes offer exceptional strength and durability for fluid transmission and other structural applications, as well as delivering numerous advantages.

What is ERW?

The abbreviation ERW stands for Electric Resistance Welding, and it is used to describe a particular process in the manufacture of pipes and pipes parts. how are pipes made this particular method of welding involves joining two uncoiled rolls of steel sheets together without the use of welding filler wire or metal. In this method, the sheets are welded together with an electrical current and continuous force application. As opposed to other types of pipe fabrication, ERW pipe fabrication begins with a billet that is rolled before being refined with a piercer point. 

Cold-forming

At room temperature, cold-forming is a process of forging or working metal specimens – in this case steel – at room temperature. As a result, the metal pipe fabrication process of forging takes place below the recrystallization temperature of the steel, which ensures that the material is free of impurities. By doing this, the grain structure of the steel changes to become finer and less coarse, resulting in a hardened material that produces very little waste when it is machined.

Cold-rolling or molding is one of the most important steps in the manufacturing of ERW pipes, which involves forming a cylindrical shape from a sheet of steel that has been cold-rolled or molded. 

It is also significantly faster and more suitable for high-speed manufacturing to use cold-forming since no additional heat processing is required to be performed. A cold-formed steel specimen is significantly stronger than any steel specimens that have been welded as a result of permanent hardening during the cold-forming process.

Passage of current

ERW pipe make formation is a continuous process that occurs on equipment that is constantly moving. In spite of this, it is still possible to identify and describe the many stages that constitute it. There is a current flowing between the resulting edges of a cylindrical steel after the cold-forming process has taken place. As a result of the induction coil and the smooth pressure roll, the cylindrical shape is gradually maintained as they are gradually brought together with the current steel pipe process.

Using an induction coil as a heating method results in the material being heated without contacting any body part. This type of heater is usually placed around the steel specimen that is being welded. A recirculation impeder is also added to the ERW machining process to regulate how much electrical current is distributed throughout the materials during the machining process. This implies that the energy is transferred to the welding of the steel joints in the process.

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What is ERW pipe?

An ERW pipe is a steel tubular product that has been welded using an electric resistance welding process to join the material together permanently. Electric resistance welding involves heating the metal components with an electric current and melting them at the point of join.

How is ERW pipe made?

By cold-forming a flat sheet of steel pipe into a cylindrical shape, and passing a current through the edges of the sheet, the edges are fused together to form an ERW pipe. There are two main types of ERW pipes: 

1. High frequency welding
2. Rotary contact wheel welding

High frequency welding

An A.C current is passed through the edges of the metal pipe parts in high frequency ERW welding, which results in better bonding and crack prevention than low frequency ERW welding, which uses a lower frequency A.C current. High frequency ERW welding is commonly used in the manufacturing of ERW pipes.

Rotary contact wheel welding

As part of the rotary contact wheel welding process, an electric current is passed through a contact wheel at the weld point, which applies some pressure in order for the welding process to be successful.

Types of Erw Pipes

Carbon Steel ERW Pipes

In order to create Electric Resistance Weld (ERW) carbon steel pipes, a carbon steel plate is rolled into the shape of the pipe and the seam is then electrically welded together to finish the pipe. The carbon steel plate is rolled into the shape of the pipe and the seam is then welded together.

As a leading enterprise in the industry, RatnaExports.com is renowned for pipe and steel industrial its ability to manufacture, export, stock, and supply a wide range of Carbon Steel ERW Pipes to its domestic and international clients. As we have procured this CS ERW Pipes range in the best raw materials, we are able to guarantee our clients that the offered range is of high quality.

In addition to being available in various specifications per industrial standards, the Carbon Steel Electric Resistance Welded Pipe range has a wide range of applications in the oil and gas industries as well as being available in a variety of sizes and thicknesses. As a result of our dedication to providing quality raw materials of both national and international standards, we are also able to deliver these CS Electric Resistance Welded Pipes in customized sizes and thicknesses tailored to meet the specific needs of our esteemed clients.

• Stainless steel ERW pipe

A Stainless Steel ERW Pipe is a type of pipe which is manufactured by passing a high voltage current through the piping component to longitudinally weld it steel&pipe.These pipes are usually made with a maximum outer diameter of 609mm, in addition to having good corrosion resistance and oxidation resistance properties. The pipes contain a good amount of chrome, which makes them ideal for transportation of fluids and gases in a wide variety of applications. As far as you can tell, stainless steel EFW pipes are only produced through the high frequency welding process at high temperatures. At high temperatures, these pipes are usually used to join dissimilar welding pipes metal materials that need to be held together.

A welded stainless steel pipe is made by rolling strips of metal, followed by welding in place, using a standard welding procedure. These pipes are used in moderate to low-pressure systems and are available at a very competitive price, since they are suitable for moderate to low-pressure systems. The Schedule 40 Welded Stainless Steel Pipe is one of the most common schedules of pipe within this grade. It is possible to move and transfer moderate to low pressures through these pipes. 

The Schedule 80 SS Welded Pipe, on the other hand, has a slightly higher pressure holding capacity than the Schedule 40 pipe, what does schedule 40 mean thus allowing metal tubes it to handle higher volumes of fluids and gases than the Schedule 40 pipe. In the construction of structural modules used in oil and gas applications, it is frequently the use of large diameter welded stainless steel pipes. These pipes are usually welded in ERW, SSAW, or LSAW processes. In a Stainless Steel Spiral Welded Pipe, an inert gas weld overlay is used to provide a continuous penetration through the metal in order to create a strong weld. Welding eliminates distortions that may occur in a component due to unbalanced stress that may result from normal welding procedures. We can customize our products in order to meet all customer requirements, as our esteemed workers have the expertise to do so.

ERW PIPE MANUFACTURING PROCESS

ERW pipes are manufactured from steel coils, which are uncoiled, then cut, drilled, processed, welded and tested before they are shipped to the end user, as can be seen in the picture below.

A common welding technique for oil and gas pipes is the so-called welding galvanized pipe “high-frequency induction technology” (ERW-HFI), a welding process that uses an induction current to produce a robust seam weld that is able to bind the two sides of the steel coil in a very tight manner. This process is accomplished by applying an induction current to metal water pipe the outside surface of the pipe.

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A ERW welding process refers to the generation of heat caused by the resistance of current flow through the jointed metals in ERW welding. Thus, e r w a high current is needed to electrify the entire surface of the steel plate or coil to the length of welding. A 50/60 Hz electric current is passed through the entire conductor during the ERW welding process.

The HFW welding process differs from the high-frequency welding process in that only a portion of the stainless steel abbreviation metal is heated by induction from an electric coil. High-frequency welding is done either with AC or DC current. Constant current welding generators and high-frequency welding seam pipe generators are used in these cases.

A constant current welding machine is able to generate power at 100-800 kHz. The older processes were used to convert 60 Hz, AC current into high frequency current using triodes and tanks. A new welding machine utilizes metal oxide silicon, field-effect transistors usually connected to parallel resonance circuits, with the conversion of 60 Hz, AC current to high frequency current. In the constant voltage version, insulated gate bipolar transistors are used to produce about 2000 kW of power and with frequencies between 100 and 600 kHz.

There are two distinct features of HF current than 60 Hz line current:

It should be noted that while the 60 Hz line frequency current flows through the entire conductor, the HF current flow only on the surface of the conductor, so it is called the “skin effect ”.

When two conductors carrying HF current are placed close to one another, the current concentrates on the surfaces of the conductors next to each other, this is called the “proximity effect ”.

There is a specific distribution of the HFW current that occurs on both sides of the metal conductor, i.e. the current flows mainly along the sides of the metal conductor. Both conductors are close to one another, and the majority of the HF current flows on the adjacent sides of the metal conductor.

ERW steel pipes made from API 5L PSL2 require HFW

It is a mandatory requirement for ERW steel pipes according to API 5L and ISO 3183 specifications to use HFW welding as a welding method for PSL 2 pipes erw tube mill process welded in a welded process. As it is an improvement from the inherent problems of hardness, lack of fusion and susceptibility to stress corrosion cracking (SCC).

ERW steel pipe includes HFW steel pipe

As the name implies, ERW is a general term describing resistance welded steel pipes. There are two types: alternate current welding (AC), as well as direct current welding (DC). AC welding can be divided into four types based on their frequency. Low frequency welding, intermediate frequency welding, ultra frequency welding and high frequency welding are the four types of AC welding. In the construction of ordinary or thin wall steel pipes, high frequency welding (HFW) is commonly used. It consists of contact welding and induction welding. A direct current welding process is generally used for the processing of small caliber steel tubes. steel pipe manufacturers However, high frequency welding (HFW) is considered to be one of the production methods of ERW steel pipe, which adopts the process of high frequency welding.

What is ERW steel pipe?

A steel pipe that is ERW is manufactured by using electric resistance that varies from low to high frequency. The welding seam is longitudinal. The explain the difference between milling and welding electric current generated by the welding process jsw plumbing and electrical will cause the heat to be produced when it flows through the contact surface of the welding area. As a result, the edges of the steel will be heated to the point that they can form a bond. During the process, the edge of the pipe billet steel would melt and extrude together with the combined pressure.

In an ERW process, what kind of pipes (standards) could be produced

Stainless steel ERW pipe/tube standards and specifications

ASTM A269 stainless tube

ASTM A312 Stainless pipe

ASTM A270 sanitary tubing

ASTM A790 ferritic/austenitic/duplex stainless pipe

Carbon steel pipe in ERW

ASTM A53 Grade B and A (and Galvanized)

ASTM A252 pile pipe

ASTM A500 structural tubing

EN 10219 S275, S355 pipe

ASTM A134 and ASTM A135 pipe

API ERW Line pipe

API 5L B to X70 PSL1 (PSL2 shall be in HFW process)

API 5CT J55/K55, N80 casing and tubing

And etc.

ERW steel pipe application and usage

It is possible to use ERWstainless steel pipe suppliers pipes to transport gas and liquid objects such as oil and gas at low and high pressures. The development of ERW technology over the last few years has resulted in more and more ERW steel pipes being used in the oil and gas industry, automobile industry, and so on.

The advantages of ERW pipes

High efficiency, low cost, material saving, easy automation.

What is HFW steel pipe?

I would like to point out that HFW pipe can be regarded as a type of ERW pipe.

An ERW pipe that has been produced with a welding current frequency of over 70 kHz (high frequency welding) is referred to as a high frequency welding pipe (HFW). A high-frequency welding resistance is generated by the heat generated in the contact object,seamless pipe so that the objected surface will be heated to a plastic state, then forging can be done in order to achieve a combination of steels. Solid resistance heat energy is known as HFW. In the event that a high frequency current passes through a metal conductor, two peculiar effects are produced, the skin effect and the proximity effect. In the HFW process, skin effects are used to concentrate the electric current flow path on the steel object surface, and proximity effects are used to control the high-frequency electric current flow path’s position and power. The speed at which the plate is contacted is very high, which makes it possible to heat and melt the edge of the plate on shore during docking time.

Advantage of HFW pipe

The HFW steel pipes do not need to be filled with filling meta during welding, so they can be welded quickly and efficiently. The HFW pipe is widely used for a wide range of applications such as oil and gas transportation, oil well pipelines, building structures, as well as a variety of mechanical pipes. Although the HFW steel pipe quality is affected by many factors, such as raw material and erw carbon steel pipe manufacturer process, it becomes very difficult to control the quality of the steel pipe during production. Consequently, the yield and welding process still need to be improved continuously in order to achieve the best results.

Welding Processes of the ERW and HFW

As a result of the electric resistance welded to current flow that passes through the jointed metals during the ERW welding process, the heat generated is known as the ERW welding process. ERW welding requires a large current to electrify the entire surface of the steel plate or coil for the length of the welding process, so 50/60 Hz is used for the electric current.

The HFW welding process differs from the high-frequency welding process in that it only heats a section of the steel metals with the induction of an electric coil. High-frequency welding occurs when either AC or DC currents are used to generate the high frequency. In these cases, there are two types of generators. One of them is a constant current welding generator. One of them is a constant voltage high-frequency welding generator.

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SEAMLESS PIPE

erw pipe that are seamless are made without seam welds and they are made from steel billets that are heated and drilled to create the tubular sections. As a result of seamless pipes being used in the oil and gas industry for types of pipes different purposes, including upstream operations, as well as midstream operations, such as carrying and distributing fluids such as petroleum, gas, slurries, steam, and acids, seamless pipes are used for a variety of different purposes. Process piping is also used in downstream operations,welded pipe such as refinement of oil and gas in secondary production. A seamless pipe can be used pipe types in a wide range of plumbing applications within this industry, including general plumbing applications.

Types of Seamless pipes used in the oil and gas industry are:

•  Carbon Steel Seamless Pipes in grades such as ASTM A106, A333, A53, and API 5L 
•  Chrome-moly alloy steel seamless pipes in grades like ASTM A335 Grades P5 to P91 for high temperature and pressure applications.
• •Stainless steel seamless pipes in ASTM A312 Series of 300 and 400 such as 304, 316, 321, and 347.
• Duplex and super duplex Seamless pipes in ASTM A790/ A928 with double ferritic and austenitic structure.
•  Seamless Pipes are available in different nickel alloys such as Inconel, Hastelloy, Cupronickel, Monel, and Nickel.

SEAMLESS PIPE SIZES

different types of pipelines  As per the specifications of the ASME B36.10 and B36.19 specifications, the dimensions and weights of seamless pipes for the petrochemical industry are defined in the following specifications (the specifications also apply to welded pipes As per the specifications of the ASME B36.10 and B36.19 specifications, the dimensions and weights of seamless pipes for the petrochemical industry are defined in the following specifications (the specifications also apply to welded pipes):

• The ASME B36.10 standard covers seamless carbon and low-alloy pipes of sizes (dimensions and weights) between 1/8 inch and 24 inch in diameter and weight.
• The ASME B36.19 specification, on the other hand, specifies the dimensions and weights of seamless and welded stainless steel, duplex and nickel-alloy pipes

 The nominal pipe size represents the approximate capacity of the gas pipe material seamless pipe to transport fluids and the schedule oil and gas piping indicates the thickness of the pipe. how are pipes made Seamless pipes are available in two types: the nominal pipe size (which represents the approximate capacity of the pipe to transport fluids) and the schedule (which indicates the thickness of the pipe) (for carbon/alloy pipes, the most common schedules are schedule 40, STD, XS, XXS, and for stainless and nickel alloy pipes, the most popular schedules are 10S, 40S, and 80S).

erw tube mill process Those interested in purchasing the ASME pipe size specifications can purchase them online from the ASME website or from IHS’s online store by visiting either the ASME website or the IHS website. 

SEAMLESS PIPE MANUFACTURING PROCESS

 The seamless mild steel pipes range in size from 1/8 to 6 inches in lsaw welding pipe diameter, and are manufactured using a number of different processes, such as the so-called “plug mill process” or the “extrusion process” (for small diameters) or the “mandrel mill process” (for larger diameters).

ERW Pipe (Electric Resistance Welding)

This type 96 steel pipe of pipe is manufactured by using steel coils. These coils are then uncoiled, polished, cut, and then electrically oriented to form the pipe into a shape by aligning the two edges of the coils. The pipes are available in various sizes from 1/2 to 20 inches. It is important to note that ERW Pipes are available in a range of materials, such as carbon steel, which is referred to as ASTM A53, and stainless steel, which is referred to as ASTM A312. The basic recommendations of these pipes are ASME B36.10 and ASME B36.19. In terms of rates and performance, ERW pipes are an appropriate alternative to seamless pipes in terms of cost and performance.

Typical combinations of pipe nominal size and wall thickness are shown in the ASME and API dimensional charts (designated as “schedules”), as well as the weight of the ERW pipe in kg (or pounds).

A few years ago, ERW pipes emerged as a viable alternative to seamless pipes, both in terms of price and performance, as a result of the modern welding technologies adopted by manufacturers of ERW pipes (for example, HFI and HFW, high-frequency welding). As a result of these advancements in welding technologies, seamless and ERW pipes have become interchangeable, at least in certain applications (low/medium pressure and temperature), due to their technical superiority reducing over time. Despite the intrinsic advantage of seamless pipes over coils and plates, there is no doubt that seamless pipes will always benefit from the inherent strength of steel billets.

ERW PIPE MANUFACTURING PROCESS 

As can be seen in the picture below, erw carbon steel pipe manufacturer from steel coils that are uncoiled, cut, drilled, processed, welded and tested before they are sent to the end user.

The most commonly used welding technique for oil and gas pipes is the so-called “high-frequency induction technology” (ERW-HFI), in which an induction current is applied to the external surface of the pipe in order to create a robust seam weld which is able to bind the two sides of the steel coil in a very tight manner.