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Black steel is a type of steel that plays an important role in many projects as well as applications related to life. So what is black steel pipe and its advantages to make it is used in so many projects like that, today let's learn about black steel pipe with MRS Steel with the most detail in the article below!1. Definition about black steel pie and the important specificationsBlack steel pipe is a product created on the hot rolling process of black steel sheet material, it can be said that this pipe is a form of steel that has not been galvanized. Instead of going through a galvanizing process like many other steels, this steel just undergoes a chemical conversion to create a black or magnetic iron oxide layer. Therefore, the surface this steel is often dark blue and rough based on the dark iron oxide shell on its surface.Black steel pipe is produced based on certain standards and parameters, usually there are 2 standards most commonly applied today to evaluate black steel pipes including ASTM A53 and ASTM A106.Accordingly, the ASTM A53 standard will include the required metal components such as Carbon, Manganese, Phosphorus, Nickel, Chromium, Molybdenum and Vanadium in small proportions, the composition is mainly Iron. In which the sum of 5 elements Copper, Chromium, Molybdenum, Nickel and Vanadium must be less than 1%.ElementsPercentagesCMax 0.3%MnMax 1.2%PMax 0.5%SMax 0.045% ASTM A106 standard is a seamless black steel pipe, meaning that they will not have the joints as basic steel pipe and they are commonly used in high temperature environments. The composition of ASTM A106 type will be similar to that of standard A53, there are only minor differences as the total composition of this standard is now supplemented with Silicon.ElementsPercentagesCMax 0.35MnMax 1.06PMax 0.35SMax 0.0352. History of formation and manufacturing processes of black steel pipeMethods of producing pipe steel appeared as early as more than 200 years ago and they have been gradually researched and developed to this day. The origin of steel pipes appeared in the 1800s when a British inventor created a system of coal-fired lamps to light up the street, from which the need to use steel pipes has paid attention day by day.In the early stages in the 1820s, researchers at that time created metal pipes by using fire to soften the metal sheet and proceed to join the metal edges and weld them together with a hammer. However, this method was replaced by a more advanced method and it is considered the premise for today's method of forming steel pipes. Basically, the metal sheets will be heated until a certain ductility is reached, then the manufacturer will pull them through a conical groove. As the metal passes through the groove, the edges of the metal will gradually roll and contract to form a long, round tubular shape.2.1. Manufacturing processes of welded steel pipeNowadays, the production methods of black steel pipe have been gradually automated by equipment, so the completion time is greatly accelerated while ensuring the technical uniformity. Black steel pipe is divided into 2 common types, namely welded steel pipe and seamless pipe steel, specifically, the production process of welded pipe steel takes place as follows:Slitting line stage: The manufacturer will put hot rolled steel coils into the slitting machine to cut the steel sheets into small widths.Rolling: Then the slitting steel will be moved through the clusters and cages to flatten and chamfer on both sides, making the steel surface uniform in size.Shaping: Next is the shaping stage, the steel strip then goes through a series of grooved rollers arranged parallel to both sides, as the steel moves towards the end, their shape will gradually be rolled to form a cylindrical shape.Welding black steel pipes: This is the step that requires the most technical machines because the joint line will greatly determine the durability of the black steel pipe in the future. The steel pipe will pass through a roller arranged above to create extremely strong friction on the groove. At the same time, both the inside and outside of the pipe are also sprayed with hot zinc to avoid the risk of rusting the joints.Quality check: Once the steel pipes have been successfully shaped, they will now go through the cutting machines to complete the final stage. Black steel pipes go through modern gauges to compare technical information as required to ensure the stability and quality of the finished product before being put on the market.2.2. Manufacturing processes of seamless steel pipeIn contrast to welded steel pipe, seamless steel pipe is derived from a billet, which is then heated and cast to form a hollow section steel. Seamless steel pipe production processes began to appear in the late 19th century and it gradually replaced welded steel pipe because the manufacturing process usually took place quickly in a relatively short period of time. Therefore, during World War II, seamless black steel pipes completely took advantage of applying in life and making weaponry at that time.Currently, manufacturers usually apply one of two main manufacturing processes to create seamless steel pipe including the Mandrel Mill process and the Mannesmann Plug Mill process. Both processes serve different purposes as Mandrel Mill is used to produce small diameter steel tubes from 25 - 150mm. Whereas the Mannesmann Plug Mill process produces seamless steel tubes with large diameters from 150 to 400 mm.Mandrel Mill processThe process begins with a billet bar heated to 1300 degrees Celsius and then the manufacturer will use a long piercing to drill into the top of the billet bar to create a small hole and this gap is the starting point for radius expansion taking place afterwards. The piercing tool will rotate continuously into the center of the steel pipe and this rotation speed is enough to cause the steel core to gradually melt through its path.After the steel pipe is successfully penetrated, it will move to the mandrel mill installed on the pipe. The series of rolls here are arranged in the direction of 90 degrees to continuously roll the surface of the steel pipe to reduce the outside diameter and control the thickness. When leaving the furnace and meeting the standard outside diameter, the steel pipe will now undergo a cleaning step with high-pressure water descale to remove excess oxide deposits formed during heating. They are finally moved to the cutoff mechanism to be cut to the prescribed length, then they will be bundled and checked again before implementing shipment.Mannesmann plug mill processThe process begins with a billet that has just been heated from the furnace and then the manufacturer will use a Mannesmann drill with the head is designed in a conical shape and the size is almost equal to the diameter of the pipe. This drill will rotate continuously into the center of the steel pipe diameter to create a large enough hollow.During the steel hollow drilling process, on the production line, two rollers will be installed in the opposite direction of the steel to reduce the steel diameter thickness. In order to ensure the quality of the hollow inside, the manufacturer will use a cylindrical mandrel with a size close to the hollow diameter inside it to rotate, the purposing of this stage is control the roundness inside the pipe. Then, the steel pipe is put into the decontaminating stage and be cutted to the required length, finally the product will go through heat treatment and cooling.3. The characteristics and role of black steel pipe in the current contextA great advantage that black steel pipe brings to the project is its affordable price. Thanks to the quick and simple production process without too much technical technology, the market price of black steel pipe is always reasonable, the level price is always in the low range. Cheap input materials will help managers be more proactive in investing in other areas of the project, thereby helping the plan become stable and reduce the risk of capital shortage. Although the price is cheap, this does not affect the quality of the steel, specifically the black steel pipes have high homogeneity thanks to the production process on the same line, so the durability as well as the mechanical properties are not compromised and they obtain consistency from beginning stage to the end stage. In addition, black steel pipe will not shrink when exposed to high temperatures, the nature of black pipe steel is formed from billet with a temperature of up to 1500 degrees Celsius, so it can keep the original shape even after being heated.However, the black steel pipe is considered for environmental problems in its production process because the production requires the factory to burn fossil fuels and this leads to the large amount of smoke emitted into the atmosphere, polluting water and soil. In terms of long-term economic impacts, this steel pipe is still an ideal choice as the steel's durability has kept it existing for decades, this steel pipe is possible to become an optimal economical solution for the facility infrastructure as well as other manufacturing applications.Green steel production projects have been gradually popularized to many places of the world, green steel technology completely eliminates the use of fossil fuels from the process, helping the mills cut down on up to 90% the amount of carbon emissions. The importance of scrap steel is also being concerned by many manufacturers when it helps businesses save energy resources and be more proactive in finding input raw materials without having to invest in eloring natural mining sites.4. Applications of black steel pipe in the fieldsPossessing a variety of diameters from 12x12 mm to 100x100 mm and even up to 250x250mm, black steel pipe is now an important factor in the construction field and many industries.4.1. Pipeline systemOne of the most common applications of pipe steel is taking advantage of making water, vapor and natural gas pipelines. Black steel pipe possesses good bearing capacity without distorting, so it will be suitable as a conduit at high pressure places. In addition, these pipes also appear in oil and gas pipelines because they are manufactured according to standard specifications so they can adapt well to corrosion and high temperature environments. Various lengths and sizes of steel pipes have made it easier for businesses to install at the locations, specifically in the installation of water and gas pipelines in urban and rural areas. Moreover, black steel pipes usually require less frequent maintenance, so they can be installed underground, which helps to increase the urban beauty with less obstruction to the surrounding ground.4.2. Building structureIn construction, black steel pipe is used as the foundation of the building as well as appearing in load-bearing scaffolding. Steel pipe has a chemical composition including chromium, silicon to increase the strength and toughness of steel pipes, so it has the function of balancing and distributing the load evenly for the foundation with the scaffolding.Black steel pipe also appears in the ultrasonic pile system in the foundation structure of the building and it is the main raw material of pre-engineered steel buildings, the light weight of this pipe will help the construction process become more convenient and easier.5. The difference between black steel pipe compared to other steelsBesides black steel pipe, there are many other types of steel pipe that are the same size and shape as black  pipe, moreover, they are very popular in construction and industrial applications. Some typical steel pipe products placed on the balance sheet compared with black steel pipes can be mentioned as carbon steel pipes and galvanized steel pipes.5.1 Black steel pipe and carbon steel pipeBlack steel pipe and carbon steel pipe basically still have the basic thing in common, which is an iron alloy with added carbon to create strength. Both types have the similar advantage of being extremely sturdy and durable, so they are very popularly used in the fields of construction and manufacturing engineering. However, if you examine closely each type of steel, you will see that they have significant differences.Structural compositionIn terms of composition, the amount of carbon in steel is also divided into different abundance levels from 0.05% to 2%. Meanwhile, black steel pipe has regulations on the amount of carbon content not exceeding 0.35%. Although the black pipe has a much smaller amount of carbon, they contain elements that carbon steel pipe does not possess such as chromium, silicon and manganese, which are extremely valuable in resisting corrosion and maintaining durability for steel.Carbon steels are composed mainly of iron and carbon, they have the least chromium content compared to other steels. The element chromium gives effective corrosion resistance to steel, so the absence of chromium will make the steel very susceptible to oxidation and rust surfaces.Strength and enduranceEvaluation of strength criteria, black steel pipe is more durable and harder than carbon steel pipe because the black iron oxide coating helps increase the hardness of the material, has the effect of protecting the surface of the steel pipe and effectively resisting corrosion. Meanwhile, because carbon steel pipe does not have additional anti-corrosion elements, its durability will be worse than black pipe steel, even when the atmospheric humidity increases to 70%, it can also cause carbon steel to oxidize.Black steel pipes on the market today are not usually required to be galvanized because they are equipped with a protective layer against corrosion that is formed through the manufacturing process, while carbon steel will require the manufacturer to proceed galvanizing steps to ensure they do not corrode. Especially in gas transportation or plumbing applications, carbon steel is not an appropriate choice.Eco-friendly in manufacturingThe use of black pipes for construction and industrial applications is considered more eco-friendly than carbon steel pipes. The reason is that the emissions from the production of carbon steel pipes are more than the leaking smoke in the production of black steel pipe. The reason why is that the carbon component accounts for the largest proportion of carbon steel pipe while black steel pipe may not need or will exist very little carbon components. Therefore, many people predict that in the future, it is likely that this black steel will gradually replace carbon steel in many fields before the trend of green economic development globally.5.2 Black steel pipe and galvanized steel pipeBlack steel pipe and galvanized steel pipe are the two most widely used steels in the transportation of oil, gas, water and other liquids. Both are tubular steels and have the same application, but if you put them on the scale, you will see that these two steels are significantly different.Corrosion resistanceAlthough black steel pipe coated with iron oxide has a significant effect on oxidation resistance, this steel is not superior to galvanized steel pipe. Galvanized pipes are coated with a layer of zinc and zinc is one of the leading elements for effective anti-corrosion, in addition, the zinc layer also helps prevent steel from being scratched and helps the steel surface to be maintained in the best condition.Pipeline system applicationsThe thicker the zinc layer, the longer the life of the steel, but some studies on air pipeline systems have shown that this zinc coating can peel off and clog pipes, leading to damage for pipe. Therefore, although galvanized steel pipe is very popular in liquid transmission systems, it is not suitable for gas transmission systems.In contrast, black steel pipe is proven to be a good air transportation product as well as used for fire protection systems because black steel pipe can withstand higher temperatures than galvanized steel pipe. However, black steel pipe is not a good choice for use as a pipeline for compounds with high concentrations of corrosive because this compound will dissolve into black steel pipe and cause pipeline blockage.Production cost and priceBlack steel pipe and galvanized steel pipe have a clear difference in cost because in the production process, manufacturers have to perform additional galvanizing steps for steel, so the cost to sell to the market will be higher than that of black steel pipe. In addition, during time for implementing the construction or commercial buildings, galvanized steel pipes will never be connected to black steel pipes.6. Looking for a reputable black steel pipe supplier in VietnamThanks to its outstanding properties and affordable price, black steel pipe is always present in most construction projects as well as water and gas transmission systems. Choosing quality black steel pipe products directly sourced from large factories in Vietnam will bring a lot of sustainable value to your project.Currently, the price of black pipe steel is constantly changing because the Vietnamese steel market in particular and the global steel market are still in a difficult period. The price list of black pipe steel is not only constantly changed from manufacturers, but also from imported sources, which will make it difficult for many customers and especially importers, who want to buy black steel pipe in bulk.Understanding the needs and difficulties that customers are facing, MRS Steel as an expert in providing steel solutions will help you get a reputable source of goods from large factories in Vietnam such as Hoa Phat, Hoa Sen,... Possessing many years of experience in the steel industry in Vietnam, we are currently establishing many relationships at large factories, so we ensure that the source of black steel pipe always meets quality standards with full C/O and C/Q certifications. The comprehensiveness of MRS Steel is also proven through the team of experts with many years experience who always clearly and promptly grasp the changing policies in market prices, thereby being able to give the best advice for customers. If you need advice on a detailed list of black steel pipe sizes in the Vietnam market as well as a detailed price list for each size, please contact via Whatsapp:+84 76 911 2358 or via email vanloc@mrssteel.com.vn.

Steel is one of the most common materials in the world as it appears everywhere from skyscrapers to a presence in consumer goods daily. There have been some questions about whether the depletion of steel raw materials will occur, in fact, steel has an endless recycling capacity and manufacturers took advantage of “steel recycling” method to produce steel for a long time.The position of steel recycling in the eco-friendly manufacturing trendingEnvironmental protection has always been a top concerned topic when the climate is clearly changing, which has seriously affected the ecosystem. In addition to some measures preventing environmental waste such as limiting the use of plastic and not littering, the application of steel recycling is a solution that brings optimized cost along with saving resources.Steel recycling brings endless value to the economy because it is conservation and is a radical solution to wasting resources. Because steel has metallurgical properties, meaning that it can be melted and solidified later. Let's think about how millions of tons of scrap steel each year, instead of being discharged into the environment, are melted down to continue to be used for the manufacturing industry. According to statistics, steel is the most recycled building material in the world with about 40% of total steel production based on scrap recycling.The benefits that steel recycling brings to eco-friendly economySteel recycling creates an endless ring An interesting fact about steel is that they can be recycled consecutively without losing their inherent durable properties. The iron elements in steel cannot be destroyed, so the manufacturer will proceed to melt the steel and add some other alloying elements to create new steel products. Just like that, the life cycle of steel repeats continuously and helps many businesses optimize costs in exploiting materials for production.Saving energy & natural resourcesRecycling steel allows people to better protect natural resources as the energy used in recycled steel will be much less than making steel by blast furnace production. For each ton of recycled steel, 1 ton of iron ore and 600 kg of coal are saved. Moreover, the energy saved from steel recycling can be used for more than 18 million households in 1 year.Reduce wasteThanks to recycled steel, the area for landfill has been significantly reduced because scrap collection is the first process to be able to recycle steel. Every year, the world produces an average of 1 billion tons of steel and without recycling methods, the world's waste will have no place to be.Decreasing emissionsAccording to research, every 1 ton of steel produced from ore is equivalent to releasing 100 kg of dust and 10,000m3 of emissions to the environment because producing steel from ore requires a lot of coal and the ore itself contains only 50% of iron. Meanwhile, scrap steel contains up to 97% of iron, so recycling through scrap steel can significantly reduce emissions to the environment and help businesses save costs of input coal.Create more jobs and income for people: the steel recycling industry has been creating jobs for hundreds of thousands of people around the world by collecting scraps or conducting sorting in recycling plants .Thanks to that, the number of unemployed people will be reduced and social evils will be limited.Currently, Vietnam is also one of the countries that have policies on greening in production and more Vietnamese businesses have begun to pay attention to the promotion of recycling. For example, Hoa Phat has built a blast furnace slag recycling plant to produce cement, they also invested in a heat-to-electricity conversion line to prolong the added value chain, reduce waste treatment costs and protect the environment.Recycling steel is now considered a very viable option for the economy because it helps to conserve energy, supports businesses in proactively having available input materials when there is no need to exploit natural materials.

The steel industry in Vietnam, along with the global steel industry, is aiming to achieve carbon neutrality by 2050. Consequently, in recent times, the Vietnamese steel industry has undergone significant innovations and remarkable developments, contributing to the country's modernization and industrialization process.From 2015 until now, the steel industry in Vietnam has made significant strides and grown substantially, positioning itself as the 13th largest producer of crude steel in the world and leading ASEAN in both steel production and consumption of finished steel products. Presently, there are over 300 enterprises across the country engaged in the production and trade of iron and steel, contributing significantly to the growth and development of the steel industry.The Deputy Chairman and Secretary-General of the Vietnam Steel Association, Mr. Dinh Quoc Thai, highlighted that the Vietnamese steel industry has been making efforts to digitize, optimize technology and efficiently utilize energy resources. Some steel enterprises have leveraged surplus heat to generate electricity, meeting most of the plant's power needs, thereby reducing adverse environmental impacts and showing promising initial results. However, the steel industry still bears responsibility for 7-9% of the total national emissions and 45% of the industrial processes identified in the national strategy on climate change. Hence, the Vietnamese steel industry needs to move towards a green growth strategy to achieve the goal of achieving carbon emissions of "0" by 2050.Currently, green development has become a global imperative to limit and eliminate the adverse impacts of climate change on socio-economic growth. The steel industry in Vietnam possesses a full range of existing technologies available worldwide, including blast furnace technology, oxygen furnace technology and electric furnace technology. Additionally, there are some other technologies like direct reduction technology; however, the adoption of this technology is currently at a modest level.Additionally, Vietnam's steel industry is actively implementing more advanced technologies and production processes to aim for greener production. This encompasses utilizing more advanced technologies to reduce emissions, recycling raw materials and optimizing production processes to minimize environmental impact. Steel manufacturers can adopt recycling technologies to reuse materials like scrap steel, reducing waste output and applying environmental protection measures throughout the production process. This not only helps reduce negative environmental impacts but also promotes sustainability and efficiency in production. Furthermore, governmental support and investments in research and technology development play a pivotal role in driving the steel industry towards greener production.This is indeed the biggest challenge facing the Vietnamese steel industry in the upcoming period, but simultaneously, it represents a significant opportunity for the steel sector to innovate, modernize, and evolve into a technologically advanced and sustainable industry.

As one of the primary industries impacting the environment, the Vietnam Steel Association recently organized a workshop on the steel sector with the objective of achieving carbon neutrality by 2050. This also signifies Vietnam's technological transition direction towards a green steel industry.During the four discussion sessions at the workshop, participants focused on the following topics: The Vietnam steel industry aiming for the carbon neutrality goal by 2050; experiences and carbon neutrality roadmaps of other countries and recommendations for Vietnam; technological transition directions towards carbon neutrality in steel production and collaboration mechanisms; and the green transition roadmap of the business community.In recent times, the steel industry has progressively developed and made significant contributions to the industrialization and modernization of the country. Today, Vietnam has become the 13th largest raw steel producer in the world and leads the ASEAN in production and consumption of finished steel products. With the rapid growth of the steel industry, Vietnam is proactively pioneering the execution of the goal for carbon neutrality by 2050.As one of the countries with a growing steel industry, it is also an industry that significantly impacts the environment, accounting for 7% - 9% of the country's total emissions and 45% of industrial processes (as identified in the national climate change strategy). For this reason, Vietnam's steel sector is making progressive efforts to transform and optimize technology to enhance overall industry efficiency. The transition from 'gray steel' to 'green steel' is an inevitable trend and is aligned with the development goals of Vietnam's steel industry. Addressing climate change, reducing greenhouse gas emissions, protecting the environment, and conserving nature and biodiversity are crucial issues humanity needs to tackle. With these factors in mind, the Vietnamese steel industry should aim for a green growth strategy to achieve a net-zero carbon emission goal by 2050.Businesses in Vietnam, led by Hoa Phat, have prioritized investing in the development of high-tech steels and special steels to serve the mechanical fabrication industry, automotive industry, shipbuilding, structural steel, and more. Simultaneously, Hoa Phat always focuses on optimizing all production stages towards a circular, closed-loop model, reducing energy consumption, and establishing a roadmap for green steel development. This includes reducing CO2 emissions in line with the government's general direction, aiming for carbon neutrality by 2050. However, a current issue is that implementing emission reductions will impact the production costs of businesses. All steel manufacturing enterprises bear these cost implications. This is a challenge, but it also serves as a motivation for the steel industry to aim for stronger exports to other markets.Above are the details regarding the direction of Vietnam's steel industry towards the goal of achieving carbon neutrality by 2050. This truly represents a significant challenge for the Vietnamese steel sector in the upcoming period. This objective is not only a responsibility towards the environment but also a mission for Vietnam to become a sustainable steel-producing nation, pioneering in the region and globally. With the commitment and effort of the entire industry, this goal is entirely feasible and will pave the way for a new future for the Vietnamese steel industry.