[UPDATED] ESSENTIAL STEEL PIPE BUYER GUIDE

09 Apr.,2024

 

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Carbon steel pipe – the most cost-effective steel pipe for sale

Carbon steel pipes are among the most popular types of steel pipes for sale in many countries around the world such as the U.S., Australia, New Zealand, India, etc. It is considered the most cost-effective type of steel pipes due to its relatively affordable iron and carbon elements.

What are carbon steel pipe?

Carbon steel pipes are made of steel in which carbon is the main chemical element and determines the extent of the metal’s physical characteristics such as strength and toughness. In the carbon steel pipe producing process, producers add carbon to iron so as to harden and strengthen the resulting metal.

Applications of carbon steel pipes

Carbon steel pipes are used in various forms and sizes and in different areas, from infrastructure, tools, buildings, bridges, railways, ships, automobiles to machines and appliances. Here are some of the most prevailing applications of carbon steel pipe in real life.

Transporting water and wastewater underground

Unaffected by shock or vibration from the fluctuating water, carbon steel pipes are ideal for water, sewage, and other fluids conveyance. They are also the predominant choice when it comes to laying water pipelines under roadways.

Used in industrial operations involving high temperature

Due to its ability to resist high heats, carbon steel pipe is commonly used in heating and condensation industry and in conveying gases such as steam. The pipes are also used in pressurized heating or compressed air systems after being meticulously tested.

Other applications

Carbon steel pipe is also widely utilized in other areas such as chemical processing, steel scaffolding and building industry, sprinkler and irrigation systems, and automotive industry as well.

Different types of carbon steel pipe for sale

Carbon steel pipe is categorized regarding the proportion of carbon that is mingled with iron – the steel’s base element. There are usually five classes of carbon steel which are:

– Ultra-high carbon steel with 1.00 – 2.00% of carbon content

– High carbon steel with 0.60 – 0.99% carbon

– Medium carbon steel including 0.30 – 0.59% carbon

– Low carbon steel comprising 0.16 – 0.29% carbon

– Mild carbon steel including 0.05 – 0.15% carbon

Advantages and disadvantages of carbon steel pipe

Advantages of carbon steel pipe

Cost-effective

As mentioned above, pipes that are made of carbon steel are such an economical choice since they are often ranked as the most inexpensive type of steel pipe for sale in the global market. Thanks to their durability, carbon steel pipes can help you save a lot of money needed for repairs or replacement. Moreover, this type of steel pipe can easily be bent and shaped to fit any specification you need. Thus, these pipes offer a smart choice for any business, builder or contractor, especially ones whose budgets are tight or who are cost-conscious.

Safe and durable

Carbon steel pipes are safe to handle or work with, as they don’t need to be treated with any preservatives like glues or pesticides. Their inflammability and invulnerability to pests make them a popular choice for home building and road construction. Also, they are insusceptible to corrosion and natural disasters such as hurricanes, earthquakes or tornados, which makes this type of steel pipe consistently durable.

Environmentally friendly

Carbon steel is easily recycled, and carbon steel production is friendly to the environment. Research has shown that 70 percent of all steel is recycled in North America annually, and almost a half of steel is produced in facilities using environmentally safe constituents. This feature makes carbon steel pipe a priority in projects that care about protecting the planet.

Disadvantages of carbon steel pipe

Weak inclusive performance

One of the biggest weaknesses of carbon steel pipes is that it is much harder for them to ensure a good performance overall. When high strength is guaranteed, hardiness is low, and vice versa, in order to improve toughness, you have to accept that they are less strong. This results from the fact that carbon steel is unstable than other materials.

Brittle

High carbon steel content makes carbon steel pipe harder, brittle and less stronger compared to other metals. It has a high probability of breaking or cracking and is less likely to be bent under high pressure.

Less attractive

Compared to other materials used to make carbon steel pipe, carbon steel is less attractive in appearance as it is quite vulnerable to rust. If you seriously take aesthetic appeal into account, you may need to consider this factor.

Stainless steel pipe – the most highly resistant steel pipe for sale

Similar to carbon steel pipe, stainless steel pipe are currently in great demand in many countries around the world. This type of steel pipe is widely known for its considerable corrosion resistance. These pipes vary in sizes and forms and are utilized in various areas ranging from surgical instruments, major appliances to building and construction.

What are stainless steel pipe?

Stainless steel pipe, also known as inox steel pipe, is made of steel containing iron, carbon, and at least 10.5% chromium content, in which chromium is the main element. In stainless steel pipe, chromium reacts with oxygen to create a passive layer that helps to protect the metal from deterioration.

Applications of stainless steel pipe

Construction

In construction industries, stainless steel pipe is often used in constructing homes, buildings, bridges, and scaffoldings. They offer a good choice for both empirical and aesthetic reasons. Due to their robustness and durability, a lot of constructional works still preserve their original appearance. Many famous buildings constructed with stainless steel pipes in the world are The Helix Bridge, a pedestrian bridge in Marina Bay in Singapore, Petronas Twin Towers, one of the world’s highest skyscrapers, and The Parliament House of Australia in Canberra.

Transporting fluids

Stainless steel pipe is used a lot in fluid conveyance, specifically hot water, gas, sulfur, oil, chemicals, etc. They are popular in oil and gas processing, sewerage systems, and water treatment facilities as well.

Other applications

Pipes made of stainless steel are also used in automotive industries, pharmaceutics, modern architecture, dairy and food processing, and for making heating and air-conditioning equipment.

Different types of stainless steel pipe for sale

Carbon steel pipe is categorized regarding the proportion of carbon that is mingled with iron – the steel’s base element. There are usually five classes of carbon steel which are:

– Ultra-high carbon steel with 1.00 – 2.00% of carbon content

– High carbon steel with 0.60 – 0.99% carbon

– Medium carbon steel including 0.30 – 0.59% carbon

– Low carbon steel comprising 0.16 – 0.29% carbon

– Mild carbon steel including 0.05 – 0.15% carbon

Advantages and disadvantages of stainless steel pipe

Advantages of carbon steel pipe

Highly corrosion resistant

Stainless steel pipe are well-known for its substantial resistance to deformation, corrosion, and breakage. They can resist very high flow rates that are over 40m/s. Thus, stainless steel pipe can possess attractive appearances over long periods of time because of their rust-free quality, even when they have to transport liquids all the time. Also, they deliver cleaner and fresher water to homes and other commercial buildings.

Eco-friendly

Stainless steel pipe also brings about a lot of environmental benefits. This type of steel can be fully recycled. The installation of stainless steel pipe is safe and clean, and it helps to reduce flushing times and does not pollute the system. Moreover, forming a groove or joint in stainless steel pipe does not require any heat, so fire hazards can be minimized.

Economical

Even though the initial costs of using stainless steel pipe may be highe r than those of many other materials, the economic advantages they offer grow over time. The duration of these pipe is expected to be up to 50 years, longer than any other materials that are used to produce pipes. Additionally, no extra coating and maintenance are necessary during and after the installation process, thus it helps to cut back on a lot of costs.

Disadvantages of carbon steel pipe

Relatively expensive

If you consider stainless steel pipes as your initial expense and intend to buy them at retail, you may have to switch to other types of pipes because the fabrication process of stainless steel using the highest technology machines and techniques makes its price fairly high. The cost of final polishing and finishing this type of pipes is quite high, too.

Susceptible to dents and scratches

Although stainless steel pipes are stainless, they are not scratch or smudge-proof. If sharp objects bump into the pipes, even with just a little force, they will be very easy to get dents or scratches on the surface. This type of steel shows specks of dirt, smudges, and fingerprints more evidently than any other pipe materials, even by the slightest touch. Thus, you will have to spend more time cleaning pipes made of stainless steel.

Unable to attach magnets

It is difficult to stick a magnet to stainless steel. Hence, although it is just a minor drawback, you may have to consider it before buying pipes made of this material.

Black steel pipe – the most highly stable structured steel pipe for sale

Black steel pipe is also one of the most popular types of steel pipe for sale in the global market. They bring about a variety of benefits in different areas due to their convenience and high stability.

What are black steel pipe?

Black steel pipe, which are also known as raw or bare steel pipe, are made of steel that is not covered with any kind of coatings such as zinc or paint. Its name derives from the dark-colored iron oxide cover formed on its surface during the fabrication process.

Applications of black steel pipe

Black steel pipe is used in applications where galvanized steel is not required. Owing to the quality of the steel’s components, these pipes are broadly used in areas that demand high stability as follows:

Transporting water and gas

Pipes made of raw steel are greatly strong so that they are ideal for conveying propane and natural gas into homes and commercial buildings in rural and urban areas, and for transporting steam and air with high pressure. They can also be used for fire sprinkler systems, gas distributions inside and outside buildings, and sewerage systems.

Transporting oil and petroleum

The petroleum and oil industry takes huge advantage of black steel pipes since they need very little preservation. People often use this kind of pipes to carry large quantities of these liquids through faraway places.

Other applications

Besides the two main applications above, black steel pipes are also broadly applied in the construction industry, specifically in making fences and scaffoldings.

Different types of black steel pipe for sale

Black steel pipe can be categorized regarding their shapes. Among these categories, the most sought-after types of black steel pipe for sale are round, square, rectangular, and oval ones. Besides, there are also some special shaped black steel pipes.

Round black steel pipe is often used in the construction and automobile industries, and for the most part, they are highly suitable for water and gas conveyance. Square black steel pipe greatly assist a wide range of industries such as bridge, railway and highway building, appliance, and agricultural industries. Meanwhile, rectangular black steel pipe is used for architectural aesthetics and mechanical applications, and oval black steel pipe serve as an ideal choice for vehicle parts and accessories.

Advantages and disadvantages of black steel pipe

Advantages of black steel pipe

Resistant to high pressure

Due to their highly stable structure, black steel pipe could still perform well under high pressure both from interior or exterior surface and in extreme environments. The bare materials of steel pipe are designed with high standards which increase their tensile strength and productivity. Therefore, fluctuating pressures or shock pressures cannot bend or break them down. In other words, these pipes are shatterproof in transport and in service.

Great carrying capacity

Black steel pipe has a larger carrying capacity than other materials with the same outside diameter. Hence, these pipes can be manufactured thinner under some certain pressure. One more advantage should be mentioned here is that this type of steel pipes requires less time and effort for maintenance, thus can help to save a certain amount of money.

Disadvantages of black steel pipe

Non-resistant to corrosion

Because of having no coating on the surface, black steel pipe is not resistant to corrosion like other types of pipes. With low corrosion resistance ability, they cannot be used in conveying pure water.

Less attractive in appearance

Because of not being galvanized or coated with zinc or paint, black steel pipe does not have an appealing appearance as other types of pipes. It is also due to the steel’s non-resistance to corrosion, the pipes are susceptible to rust, which makes them less charming, especially when being used for a long period of time.

Galvanized steel pipe – the most durable steel pipes for sale

Galvanized steel pipe was invented as an alternative to lead-based pipes, the most common type of pipes used to transport water in the nineteenth century. In the 1950s – 1960s, galvanized pipe is widely used for water supply lines and home buildings. Even though they are not as popular nowadays as at that time, galvanized steel piping is still among the most sought-after steel pipes in the market.

What are galvanized steel pipe?

Steel pipes are called galvanized pipes when they are made of steel that is coated with several protective layers of molten zinc to prevent the pipes from rust and corrosion. They look like a nickel in terms of color when being installed for the first time.

In order to detect galvanized steel pipe, you can simply use a flat head screwdriver and a strong magnet. Scratch the screwdriver into the surface of the pipe, if there is a silver-gray color appearing on the scratched surface, you can say that the pipe is made of galvanized steel. Also, the strong magnet will cling to the galvanized pipe.

Applications of galvanized steel pipe

Galvanized steel pipe is mostly known as (hot and cold) water conveyance and building materials. They have a lot of indoor and outdoor applications alike. Galvanized pipes are broadly applied in such areas as follows:

– Serve as materials for building and structural industries

– Automatic and general engineering industries

– Bus body and railway boogies manufacture

– Serve as conduit pipes in telephone department.

Different types of galvanized steel pipe for sale

Galvanized steel pipe can be categorized into 3 types: Allied flo-coat pipes, pre-galvanized pipes, and schedule 40 hot dipped galvanized pipe. Details of these types are as following:

Allied flo-coat pipes

This type of galvanized steel pipes is cold formed, welded with high frequency and hot-dipped galvanization. It can be produced in accordance with ASTM A1008/A1008M and A1011/A1011M standards with a minimum productivity strength of 30,000 psi. Based on the pipes’ diameter and size, their mechanical characteristics may have a minimum productivity strength of 50,000 psi and a minimum ductile strength of 55,000 psi.

The surface of the pipes can be composed of three corresponding coatings which are a lead-free zinc coating, a conversion coating protecting the pipes from white rust, and a plain organic polymer coating serving as a final protective layer for the pipes. After welding a zinc rich organic coating, the pipes’ surface may be 100% covered with this kind of coating.

Pre-galvanized pipes

Pre-galvanized pipes are cold formed and welded with radio frequency pre-galvanized steel strip. The pre-galvanized steel has to be in correspondence with ASTM A446 standard. The zinc covering on the surface of the pipes should match the ASTM A525 Grade G90 and G120 requirements, and its weight ranges from 0.90 oz/sq ft (or 0.45 oz/sq ft each side) to 1.20 oz/sq ft (or 0.60 oz/sq ft each side).

Schedule 40 hot-dipped galvanized pipes

Schedule 40 hot-dipped galvanized pipes’ outside diameter is determined by other specifications as for non-galvanized pipes. It is often hot formed and butt welded, or cold formed and radio frequency welded. The chemical qualities of these pipes are variable depending on the producing process. Their average productivity strength is approximately 30,000 psi.

Advantages and disadvantages of galvanized steel pipe

Advantages of galvanized steel pipe

Galvanized steel pipes have numerous advantages thanks to the protective zinc coating which makes the steel more advanced, strong and desirable in different situations.

Highly durable

The biggest advantage of galvanized steel pipe is its average long life expectancy which is up to 40 or 50 years in the countryside and remote areas. In severe conditions, damaged places or in urban areas, their lifespan can be more than 25 years. Moreover, the internal zinc-iron alloys are harder than the base steel, so the galvanized steel will have high resistance to erosion and shock. Also, the manufacturing of steel that is galvanized does not usually require any maintenance or preservation throughout their whole life.

Less expensive

The galvanization process does not usually cost as much as other popular methods of protecting pipes since galvanization is not so labor intensive while the other methods often require more blue-collar work. Therefore, galvanized steel pipes have quite lower initial costs. Additionally, as stated above, as they have a long lifespan, they need little or even no maintenance which helps to save a lot of time and money.

Easy to inspect and assemble

This is another big benefit of galvanized steel pipes. Leading galvanized steel pipes manufacturers and providers often provide customers with precise information on the products. The inspection process of galvanized coatings are easy and undemanding, you can totally examine them with the naked eye and test their thickness with straightforward and non-destructive methods.

Disadvantages of galvanized steel pipe

Interior corrosion

Although the protective zinc layer on the surface of the galvanized pipe can prevent oxidation for a certain amount of time, these pipes still unavoidably corrode because of continual exposure to moisture. The zinc erosion often occurs from the inside to the outside of the pipes, which will certainly limit the flow of water, thus lower the water pressure, and can ultimately lead to a leak or even broken pipe. Furthermore, the deterioration usually takes place unevenly leading to the uneven distribution of water in homes and buildings.

Water discoloration

Galvanized steel pipes corroding can release materials and lead which will leak into the water supply. This can ultimately result in water discoloration and contamination. You can detect this issue by looking at the color of the pipes.

Welded steel pipe – one of the most highly efficient steel pipe for sale

Last but not least, welded steel pipes are more and more sought-after in the world market because of their numerous salient properties that can be applied in plenty of fields.

What are welded steel pipe?

Welded steel pipes, or steel pipes that are manufactured with a weld, are tubelike products made out of flat plates, known as skelps, which are structured, bent, and prepared for welding. Welded steel pipes are available in a variety of sizes and properties of the steel.

Applications of welded steel pipe

Applications of welded steel pipe can be listed as following:

– Automotive industries: automotive machine parts, exhausted pipes for cars, trucks, buses and containers;

– Structural industries: scaffoldings, homes and buildings;

– Shipbuilding;

– Agriculture: irrigation;

– Machinery: agricultural machines, fire extinguishers, heating exchangers, wire conduits, mills;

– Food industry: storage and handling of cereals, transport installation for granular, powdered and liquid products, etc.;

– Liquid conveyance: water, sewage, gas, air, heating, steam and other low-pressure fluid conveyance.

Different types of welded steel pipe for sale

Welded steel pipes are classified into many different types regarding the manufacturing process. Here are some of the most common among them.

Electric resistance welded (ERW) steel pipe

This is the most popular type of welded steel pipes among customers for conveying low-pressure fluids. The manufacturing process of ERW, also known as contact welding, starts by cold-forming a coiled plate of steel with suitable thickness and width into a circular shape. Then an electric current joins the edges of the circular plates to create the end product.

This type of steel pipe is popularly applied in both domestic and commercial uses. These pipes can also be divided into sub-categories such as general pipes, galvanized pipes, metric pipes, roller pipes, automobile pipes.

Electric fusion welded (EFW) steel pipe

Electric fusion welded steel pipes can also be called continuous welded steel pipes. Their manufacturing process starts when coiled steel with proper thickness, width, and weight is made. A number of coils are then welded together to form a continuous steel strip. After that, the steel strip is heated to a certain temperature and given an oval shape. Finally, the edges of the steel strip are gathered into rolls which will then convert the welded pipes into particular dimensions.

Double submerged arc welded (DSAW) steel pipe

DSAW steel pipes are available in straight and spiral welded formats and utilized in a wide range of applications. The producing process of these pipes starts with the formation of steel plates into circular shapes which will be forged to create notches on the inside and outside of the seam. Afterward, the seam is welded by an arc welder submerged under fluctuation.

Besides these three types, there are also some other types of welded steel pipes as follows:

– High frequency Induction (HFI) welded pipes;

– Long submerged arc welded (LSAW) pipes;

– U-ing and O-ing (UOE) forming pipes;

– J-ing, C-ing, and O-ing (JCOE) pipes;

– Spiral submerged-arc welded (SSAW) pipes;

– Submerged arc welded (SAW) pipes;

– Special welded pipes with different shapes and sizes such as oval, flat oval, elliptic, square hollow section, rectangular hollow section, etc.;

– Anti-corrosion steel pipes;

– Hot dipped galvanized steel pipes.

Advantages and disadvantages of welded steel pipe

Advantages of welded steel pipe

Benefits of welded steel pipe depend quite a lot on each type (as stated above), but in general, they have high accuracy, consistent wall thickness, and high brightness inside and outside of the pipes. Moreover, the manufacturing process of the pipes is uncomplicated with high productivity and low cost. Also, the interior surface of the pipes can easily be inspected before producing.

Disadvantages of welded steel pipe

Like other types of pipes, besides advantages, welded steel pipes also have some inevitable drawbacks. Firstly, the welded steel is layered, meaning that the wall thickness is separated into two layers on the cross-section of the pipes. The layers may suffer from the longitudinal splits which appear on the surface of the pipes. Secondly, these pipes cannot totally refrain from cracks of the welded line. Finally, there may be some dislocations among the welded groove, the flat welded and the pipe fittings.

Chinh Dai’s Steel Pipes for sale

Chinh Dai Steel is a professional supplier which specializes in manufacturing and providing many types of steel pipes for sale. Our steel products are highly evaluated in many international markets such as America, Australia, India, Thailand, Indonesia, Laos, etc. Steel pipes for sale at Chinh Dai include:

Galvanized Rolled Steel Coils

The products are manufactured on steel billets of Japan, Korea, and China. Zinc is imported from Australia, Korea, and Brazil. The surface is treated with a protective layer , making a beautiful pattern. High zinc thickness and good corrosion resistance protect the inner layer longer. More details can be found here.

Galvanized Steel Pipes

The surface of galvanized steel pipes for sale at Chinh Dai Steel is treated with a layer of chemical protection that will create glossy, beautiful, patterned, durable, high pressure. Heavy zinc thickness from Z12 to Z18 helps increase corrosion resistance and protects the inner steel well. Read more here.

Black Steel Pipes

Black steel pipes for sale at Chinh Dai Steel have good pressure resistance ability, high durability, easy to install, suitable for construction work as scaffolding, workshop, and mechanical engineering. More details can be found here.

Special Products

The product has good pressure resistance ability, high durability, easy to install, suitable for construction works as scaffolding, workshop, and mechanical engineering. See more here.

Steel pipes come in many types according to different classifications. We have carbon steel, black steel, alloys, and stainless steel as per chemical composition. According to the manufacturing process, steel pipes can be seamless and welded.

Welded steel pipes are manufactured using electric resistance welding (ERW), high-frequency induction welding (HFI), or longitudinal submerged arc welding (LSAW). Steel pipes are also categorized with respect to their properties against corrosion. Stainless steel and black steel are types with inherent corrosion-resistant surfaces, galvanized or painted steel depending on their coatings, such as molten zinc or paint.


Basically, knowing the application or use of the material should be enough to decide what kind of steel pipes to choose or buy. It should be straightforward: purchasing a thick-walled pipe when dealing with high pressures, choosing galvanized or stainless when a steel pipe will be used in a highly corrosive environment, or going seamless for liquid line projects.


However, choosing steel pipe is never simple, especially for significant investments, critical infrastructures, and wherever we wish for the best return value out of our hard-earned money. Project or investment value is not just the totality of the construction cost but the summary of all expenditures throughout its service life, including maintenance costs.



Whether intended for piping, automotive, general construction, or other industries, narrowing the list of appropriate steel pipes requires a closer look and comprehension of their qualities. Below tabulation of crucial information may be of help.


Background

Carbon Steel - Accounts for 90% of total steel production. It is considered the most cost-effective steel pipe due to its relatively affordable iron and carbon elements.

Galvanized Steel - Known as the most durable steel pipe in the market

Black Steel - Considered the most highly stable structured steel pipe

Alloy - It has alloying elements that make steel lighter, sturdier, and more resistant to stress and pressure and also has enhanced weldability and ductility

Stainless Steel - Stainless steel pipes are widely known for their considerable corrosion resistance and aesthetic appearance


Chemical Components

Carbon Steel – Alloys of carbon and iron, containing up to about 2% carbon and up to 1.65% manganese by weight

Galvanized Steel – Same components of ferrous steels. They can be iron or steel.

Black Steel – Has low-grade carbon content.

Alloy – Alloying elements like nickel, chromium, manganese, copper, vanadium, molybdenum, silicon, tungsten, and many more, amounting to 1 to 50% by weight

Stainless Steel - Contains between 10 to 20% chromium – the element that prevents corrosion; and a maximum of 0.1 to 1% of carbon. It also contains manganese, silicon, nickel, and molybdenum.


Production Process

Carbon Steel - Seamless or Welded

Galvanized Steel - Seamless or Welded

Black Steel - Seamless or Welded

Alloy - Seamless or Welded

Stainless Steel - Seamless or Welded


Weight

Carbon Steel - 7.85 tons per cubic meter

Galvanized Steel - Weight of base material (iron or steel) + 15% due to zinc coating

Black Steel - 7.80 tons per cubic meter

Alloy - Reduces the weight of pure metals depending on what alloying elements are used.

Stainless Steel - 8.0 tons per cubic meter


Ideal Applications

Carbon Steel - Ideal for construction applications and other uses like liquid and gas lines under high temperatures, tools, ships, automobiles, and more

Galvanized Steel - Mainly used in the transportation of coal gas, steam, and water

2Equally excellent for a wide range of construction applications, including marine and weather-exposed environments

Black Steel – 1) Preferred in areas that demand high stability like liquid and gas transportation due to high strength and corrosion resistance.

- 2) They are also used in many construction applications

Alloy - *Generally utilized in the piping industry for extreme conditions, as well as in Oil and Gas and power generation, due to its toughness.*Alloy steel pipes also has numerous applications in the building and construction industry

Stainless Steel - Used in industries where corrosion and oxidation resistance are significant and require high strength, including ships energy, poles, water treatment, pharmaceutical, and Oil and Gas applications


Areas of Limitation

Carbon Steel - Not suitable for extreme conditions or high pressure

Galvanized Steel - 1) Not advisable to be used in gas lines because the zinc coating can clog the pipe when it begins to flake;

- 2) Later found to be unrecommended for water transportation due to the contamination developed after years of service.

Black Steel - Less suitable for applications requiring aesthetic appearance

Alloy - Occasions may be rare, but alloys are less recommended when excellent electrical or heat conductivity is required

Stainless Steel - Applications involving contact, friction, or abrasion should be avoided to maintain the integrity of the chromium layer that keeps the material rust and corrosion resistant


Strengths

Carbon Steel - It is a robust, high-strength, and shock-resistant metal. Unlike many other metals, it does not decay. Carbon steel pipe comes in various sizes, can be bent to curves, and may be utilized almost everywhere. This metal is frequently the most practical choice due to its strength, affordability, and safety.

Galvanized Steel - Galvanized steel pipes are designed to prevent rust and corrosion. Galvanization or zinc coating is less costly than other protective coating methods. It is highly durable; hence it can reach a service life beyond 50 years under normal conditions and at least 25 years under severe and extreme environments.

Black Steel - 1) These steel pipes are manufactured with increased tensile strength and productivity. Fluctuating pressures or shock pressures cannot bend or break them down. In other words, these pipes are shatterproof in transport and in-service; 2) Because of high strength, these pipes can come with thinner walls, maximizing inside diameter or carrying capacity; 3) Alloy steel pipes can prevent fires better than galvanized steel pipes.

Alloy - 1) Alloy steel pipes are corrosion-resistant;

2) have a higher percentage of ductility and weldability.

3) They can be lighter and have a higher melting point than other steel, which is a positive factor in the safety of buildings and structures against fire and seismic activities.


Stainless Steel - 1) Stainless steel pipes are corrosion-heat-impact resistant;

2) They are also favorable for the food industry since they have antimicrobial properties that are genuinely great for transporting food products in processing systems. *They are also easy to manufacture, install, and maintain. The flexibility of stainless steel makes it possible for manufacturers to generate custom-shaped pipes and pipe fittings. Stainless steel pipes are likewise easy to install, saving industries from lengthy preparation time.


Weak Points

Carbon Steel - It is more prone to rust compared to other steel. Because of its strength, it is more challenging to work with

Galvanized Steel - Galvanized steel pipes corrodes from inside out after some time, resulting in clogged lines and contamination of carried liquids, especially water.

Black Steel - Black steel pipes are not corrosion-resistant and are less attractive.

Alloy - Alloy steel pipes have lower strength compared to carbon steel

Stainless Steel - Stainless steel pipes are more expensive due to the integration of superior alloying materials and the complexity of manufacturing processes and types of machinery


Initial Cost

Carbon Steel - With anti-corrosion measures, the cost is higher compared to black steel pipe

Galvanized Steel - More expensive than iron and steel pipes due to the zinc coating provided

Black Steel - Considered the cheapest steel pipe.

Alloy - More costly compared to iron and steel pipes depending on the nature and quantities of alloying substances

Stainless Steel - Reckoned as the most expensive among steel pipes


Maintenance/Anti-Corrosion

Carbon Steel - 1) Initially requires galvanizing, Painting, Cathodic Protection, or combinations to stay longer; 2) Maintenance of protective coating is required periodically or as physically necessary.

Galvanized Steel - Monitoring is required to zinc coating, and repairs are necessary when damage, rust, or deterioration is detected.

Black Steel - Requires lesser time and effort of maintenance

Alloy - Maintenance is convenient and cheap

Stainless Steel - Maintenance is convenient and cheap.



Each classification and type of steel pipe has suitable areas of application, dominant features, and inferiorities.

Ultimately, choosing a suitable steel pipe is a matter of design priorities - what characteristics of steel pipe have the utmost importance, and what features are given with the slightest consideration? The building blocks of steel might be simply iron and carbon; however, alloying processes have allowed us to customize steel into desired properties that suit almost all extent and complexity of applications in metallurgy.


Be an intelligent buyer by learning more about the types of steel suitable for your specific piping requirements. Choose a supplier that offers stellar inventory, value-added services, and experience in the global market. Choose ESC!


ESC steel piping products have it all – steel piling pipes, combination walls, structural steel pipes, loading steel pipes, including corrosion protection solutions. ESC produces a wide range of steel pipes up to 4,267mm diameter and 100mm thickness by LSAW, SSAW, and ERW manufacturing processes.


Know more about our products, please download our catalog and feel free to contact us at: www.escglobalgroup.com


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