Steel pipes are becoming more and more sought-after in the global market because of their various advantages that are beneficial to a lot of different areas and industries. Following are five most popular steel pipes for sale in the world.
Carbon steel pipes – the most cost-effective steel pipes 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. They are considered the most cost-effective type of steel pipes due to its relatively affordable iron and carbon elements.
What are carbon steel pipes?
Carbon Steel Pipes (Source: Internet)
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 used for Scaffolding (Source: Internet)
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 pipes 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 pipes are 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.
Carbon steel pipes are 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 pipes for sale
Carbon Steel Pipes (Source: Internet)
Carbon steel pipes are 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 pipes
Advantages of carbon steel pipes
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 pipes 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.
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 pipes
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.
High carbon steel content makes carbon steel pipes 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.
Compared to other materials used to make carbon steel pipes, 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 pipes – the most highly resistant steel pipes for sale
Similar to carbon steel pipes, stainless steel pipes are currently in great demand in many countries around the world. This type of steel pipes 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 pipes?
Stainless Steel Pipes (Source: Internet)
Stainless steel pipes, also known as inox steel pipes, are made of steel containing iron, carbon, and at least 10.5% chromium content, in which chromium is the main element. In stainless steel pipes, chromium reacts with oxygen to create a passive layer that helps to protect the metal from deterioration.
Applications of stainless steel pipes
People use stainless steel pipes for a variety of purposes in work and in daily life. Here are some common ones:
In construction industries, stainless steel pipes are 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.
Stainless steel pipes are 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.
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 pipes for sale
Regarding their applications
Application of stainless steel pipes in high-pressure industries (Source: Internet)
– Pressure stainless steel pipes: This type of stainless steel pipe can be made from a composite of nickel and chromium or from solid chromium. Two sub-categories of pressure stainless steel pipes are seamless and electronic function ones.
– Sanitary stainless steel pipes: This type of pipe is used in sanitary industries, where sanitation is prioritized, like food and beverage processing ones. Sanitary pipe is usually made of ASTMA270 and requires minimal maintenance.
– Mechanical stainless steel pipes: These pipes are made of ASTMA511 and A554 grades and are used to produce things like cylinders and other similar applications.
– Standard stainless steel pipes: This is grade 304 stainless steel type which contains 0,08 carbon content. Because it is resistant to corrosion and chemicals, this type of stainless steel is often utilized in regular environment applications.
– Hydraulic line stainless steel pipes: This type of steel is manufactured from 304 or 304L (“L” here means the carbon content is lower than 0,03%) types. Its small diameters make them more durable, thus is suitable for fuel lines and hydraulics.
– Aircraft stainless steel pipes: Stainless steel pipes with low carbon content are very popular in aircraft applications since they are highly strong.
Regarding their crystalline structure
– Austenitic stainless steel pipes: This type of steel accounts for the largest part, at about two thirds, of all stainless steel production. It possesses an austenitic microstructure which is unchanged in all conditions and at all temperatures, giving the pipes ductility and hostility to heat treatment. Austenitic stainless steel pipes can also be divided into 200 or 300 sub-groups in terms of their chemical components.
– Ferritic stainless steel pipes: Like austenitic stainless steel, ferritic stainless steel can neither be hardened by heat treatment nor strengthened by cold environment as it contains a ferrite microstructure which is present at all temperatures and from 10,5% to 27% chromium with very little or no nickel.
– Precipitation hardening stainless steel pipes: This type of steel pipes is treated through a precipitation hardening process and is highly strong thanks to additional elements such as aluminum, copper, or niobium. Its corrosion resistance ability is comparable to that of austenitic stainless steel type. The most common type of precipitation hardening stainless steel is 17-4PH, which uses about 4% nickel and 17% chromium.
– Duplex stainless steel pipes: The microstructures inside this type of steel consist of an equal percentage of austenite and ferrite, hence the pipes’ physical properties are the same as those of austenite and ferrite grades. This type of steel offers a very high mechanical strength that makes the pipes suitable for lighter constructions and denser system design.
– Martensitic stainless steel pipes: Martensitic stainless steel is similar to ferritic stainless steel in having chromium as the main element, yet it has a higher level of carbon content which allows the pipes to be considerably hardened.
Advantages and disadvantages of stainless steel pipes
Stainless steel pipes are well-known for its substantial resistance (Source: Internet)
Advantages of stainless steel pipes
Highly corrosion resistant
Stainless steel pipes 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 pipes 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.
Stainless steel pipes also bring about a lot of environmental benefits. This type of steel can be fully recycled. The installation of stainless steel pipes 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 pipes does not require any heat, so fire hazards can be minimized.
Even though the initial costs of using stainless steel pipes may be higher than those of many other materials, the economic advantages they offer grow over time. The duration of these pipes 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 stainless steel pipes
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 pipes – the most highly stable structured steel pipes for sale
Black steel pipes are also one of the most popular types of steel pipes 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 pipes?
Black Steel Pipes (Source: Internet)
Black steel pipes, which are also known as raw or bare steel pipes, 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 pipes
Black steel pipes are 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.
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 pipes for sale
Round Black Steel Pipes (Source: Internet)
Black steel pipes can be categorized regarding their shapes. Among these categories, the most sought-after types of black steel pipes for sale are round, square, rectangular, and oval ones. Besides, there are also some special shaped black steel pipes.
Round black steel pipes are 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 pipes greatly assist a wide range of industries such as bridge, railway and highway building, appliance, and agricultural industries. Meanwhile, rectangular black steel pipes are used for architectural aesthetics and mechanical applications, and oval black steel pipes serve as an ideal choice for vehicle parts and accessories.
Advantages and disadvantages of black steel pipes
Advantages of black steel pipes
Resistant to high pressure
Due to their highly stable structure, black steel pipes could still perform well under high pressure both from interior or exterior surface and in extreme environments. The bare materials of steel pipes 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 pipes have 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 pipes
Non-resistant to corrosion
Because of having no coating on the surface, black steel pipes are 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 pipes do 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 pipes – the most durable steel pipes for sale
Galvanized steel pipes were 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 pipes are 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 pipes?
Galvanized Steel Pipes (Source: Internet)
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 pipes, 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 pipes
Galvanized steel pipes are 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 pipes for sale
Galvanized steel pipes can be categorized into 3 types: Allied flo-coat pipes, pre-galvanized pipes, and schedule 40 hot dipped galvanized pipes. 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 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
Despite having no specification, this type of galvanized steel 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.
Hot-dipped Galvanized Steel Pipes (Souce: Internet)
Advantages and disadvantages of galvanized steel pipes
Advantages of galvanized steel pipes
Galvanized steel pipes have numerous advantages thanks to the protective zinc coating which makes the steel more advanced, strong and desirable in different situations.
The biggest advantage of galvanized steel pipes 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.
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 pipes
Although the protective zinc layer on the surface of the galvanized pipes 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.
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 pipes – one of the most highly efficient steel pipes 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 pipes?
Welded steel pipes (Source: Internet)
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 pipes
Applications of welded steel pipes can be listed as following:
– Automotive industries: automotive machine parts, exhausted pipes for cars, trucks, buses and containers;
– Structural industries: scaffoldings, homes and buildings;
– 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 pipes 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 pipes
ERW Steel Pipes (Source: Internet)
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 pipes 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 pipes
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 pipes
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 pipes
Advantages of welded steel pipes
Benefits of welded steel pipes 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 pipes
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
Chinh Dai’s 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.
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.