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Galvanized steel has many outstanding features such as high durability, good bearing capacity, aesthetic value, so it is popular in construction projects. In addition, they are also the main materials in many different industries and fields. In this article, let's explore the common applications of galvanized steel in life with AG真人游戏 Steel!1. The advantages of galvanized steelGalvanized steel has many special advantages and optimal structural design over many other steel materials such as:High durableGalvanized steel has a thin layer of zinc coated on the metal surface by hot dipping or electrolytic, so it is extremely good rust resistance. GI sheet can adapt to many types of environment and has high durability during using process.Low costGalvanizing costs are much lower than protective coating methods for steel structures. In the long run, galvanized is still the most optimal choice because it has a long service life, low maintenance. Meanwhile, the maintenance cost of other steel materials incurs much costs, time and effort of the investor.Long life expectancyZinc has a higher chemical strength than iron so galvanized steel can last for a long time. Under normal climatic conditions, the life expectancy of galvanized coatings is up to 50 years. In the case of harsh environmental conditions such as the marine area, the works using galvanized steel can still be maintained for 20-25 years.Good bearing capacityGalvanized steel is light weight but very strong and has good bearing capacity, resistant to mechanical shocks during transportation, installation and using.Comprehensive protectionWhen galvanizing, all dimensions of the steel, including the most inaccessible areas, are covered with a protective coating that is difficult to achieve with conventional coating methods.Easily shapedGalvanized coatings are easy to observe, visually assess and test methods of coating thickness without destroying its structure.Easily manufactured The input materials are easy to find, the galvanizing process is simple and fast, regardless of weather conditions, so the production process of galvanized steel is very convenient.2. The outstanding applications of galvanized steelGalvanized steel is an easy-to-find, low-cost and high-strength material, so it can be used to produce many products in many fields.2.1. Application for making Deck floor Galvanized steel after corrugated rolling process is used as a Deck floor to replace floor formwork. Using GI plates to form a large deck on a steel girder system reduces the need for scaffolding. As a result, projects can save significantly a lot of time and construction costs.2.2. Application for making air ductsGalvanized steel creates a solid outer protective layer against environmental impacts for air ducts. GI's bright surface also makes products more aesthetic, specialized in buildings such as high-rise buildings, apartments, commercial centers,...2.3. Application of purlin productionGI is available with anti-rust and anti-corrosion features without the use of other protective paints, so it saves production and periodic maintenance costs. On the other hand, galvanized steel has a good bearing capacity, so it is very suitable as a material for making purlins.2.4. Application of tube productionSteel tubes on the market today are mainly manufactured from galvanized steel to take advantage of the outstanding properties of this material. Therefore, all kinds of galvanized steel pipes steel which are resistant to corrosion and rust and, are used to make water supply and drainage systems, oil and gas pipes or auto parts,...2.5. Application of producing household appliancesFamiliar household products such as buckets, drums, water tanks,... are all manufactured from galvanized steel to increase durability, prevent corrosion and oxidation in nature.2.6. Application for making auto partsIn the field of automobile manufacturing, galvanized steel sheets are the main material for vehicle parts and components thanks to their diversity in size and shape. 3. Vietnam's galvanized steel production technologyVietnam's galvanized steel is famous for its modern production technologies, which meet international standards and customer requirements. The line includes an automatic, environmentally friendly NOF annealing furnace, which optimizes the heat treatment process and produces high-quality finished products. Galvanized surface is controlled by Danieli Kohler air knife system and OIL LETCH electrostatic technology. The coating thickness is accurately calculated using the coating weight gauge.Danieli's tention leveller is the latest version consisting of 2 bending, 1 C-roll cluster and 1 L-roll, handling all surface problems such as wavy edge, center buckle, camber. Vietnam galvanized steel is currently exported to many fastidious markets such as the US, Australia, UK and Europe thanks to satisfying the criteria of origin, JS, ASTM, BS EN standards,...If customers want to learn and import galvanized steel from Vietnam, please contact AG真人游戏 Steel via Email [email protected] for detailed advice.

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 AG真人游戏 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, AG真人游戏 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 AG真人游戏 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 [email protected].

As a material used in most fields, the steel refining process is of great interest. Join AG真人游戏 Steel to learn more about the steel refining process in the article below!1. Iron Ore Processing: The First Step in the Steel Refining ProcessThe first stage in the steel refining process is to process iron ore and other metal components to make steel. Iron ore includes a lot of minerals, the processing of which will help remove impurities to obtain the main ones.Usually, iron ore will be mined in mines in areas with high mineral potential. When put into the kiln, iron ore will be added to other additives such as limestone, coal,...2. Create a stream of molten steelAfter being processed, the steel refining process begins with the introduction of iron ore from the top of the blast furnace, hot gas is blown from the bottom. After being heated at 2000掳C, the iron ore will transform into molten steel. During this period, steel usually appears as black steel. Black steel hides carbon, sulfur, silicon as well as many other impurities.After obtaining the finished product, the steel will be directed to the smelters. At this time, the molten steel is processed, removing the remaining impurities during the heating process. From there, creating a correlation between chemical components in the steel refining process.3. The next fuel castingThe finished steel of stage 2 is sent to the billet furnace; after being cast, there will be three basic types of billets:Bar workpiece: workpiece with a cross section of 100x100 or 125x125, length 6-9-12m. Usually used for rolling or pulling steel coils as well as rebar steel.Slab: Usually use rolled-out hot-rolled steel coil, hot-rolled steel plate, cold-rolled steel coil or shaped steel.Bloom billet : Used to replace bar or slab workpieces.In the process of steel refining, after being cast, the workpiece is in two states: hot and cold. In particular, the hot state will be maintained at a high temperature and then taken to the hot rolling place. On the contrary, if it is in a cold state, the billet is transferred to other factories, reheated and then transferred to the rolling process to form the product.4. Finished products of steel refining process: Hot rolled coil and cold rolled coilIn the steel refining process, at the 4th stage, billets are sent to factories to roll out different construction steel products:Bringing a billet into the steel plate factory to roll out cast steel plates.Put the billet into the hot-rolled coil factory, and the billet will be rolled into a hot-rolled coil.Bringing billets to the section steel mill to roll out rail products, U, V, I, H and bar steel products. Bringing billets to steel mills to roll out smooth construction coils. If you want to roll out a cold-rolled coil, the coil temperature will be lowered to an appropriate level. Then pass through the rust removal line and proceed to roll with the required thickness and size. At this time, the cold-rolled products will have a brighter, more glossy and harder surface. 5. Galvanized steel coil and steel pipeAfter the steel refining process, the cold-rolled steel obtained in stage 4 will undergo galvanizing to finish the coil surface. The zinc coating protects the steel against corrosion and increases the life of the product. Galvanized steel coil is the raw material for the production of steel pipes. In addition to steel pipes, galvanized steel coils are also used to produce Square Steel Pipes, Steel Rectangular Pipe,... with diverse designs and sizes.Above is the steel refining process made from ore that is applied in most factories. If you want to buy steel products, please contact us HERE.

Today, environmental protection is one of the main goals of all activities and businesses aiming at sustainability, stability and community value. In addition to ways such as limiting the use of plastic and not littering, recycling steel is also one of the solutions that many people trust, especially in the construction industry. In this article, AG真人游戏 Steel will analyze efforts to reduce the environmental impact of steel products throughout its life cycle of steel, from raw material exploitation to end-of-life stage.1. Recyclability of construction steelSteel is one of the most recycled materials in the world with 93% of all structural steel capable of being recycled into new products without losing its inherent properties, while only 8% of plastic is recycled. When using recycled steel, the production process can reduce electricity consumption by 80% compared to completely new production, while also reducing environmental impact and completely eliminating the exploitation of raw materials.During the life cycle of steel, materials are recycled and used in many large and small projects with the construction method of prefabricated steel frames. This is a construction solution chosen by many investors because of its outstanding advantages such as saving time, labor costs, shortening the disassembly and assembly process,...2. What is the life cycle of steel?By understanding the life cycle of steel, we can take advantage of its infinite reusability to create sustainable economic and environmental values.Collecting raw materialsFor recycled steel, you can find sources such as factories, shipyards, large construction projects, ships,... around the world. This process also includes classifying and separating scrap steel from mixed materials so that the recycling process takes place quickly, minimizing residue. Steel productionSteel factories focus on two common production processes: producing steel from iron ore in blast furnaces or from scrap in electric arc furnaces. With advanced technological improvements in production lines, CO2 emissions are reduced during the production phase.Recycling leftover productsDuring the steel production process, there will be surplus products that can be reused such as slag, iron scrap,..., which act as a substitute for some raw materials, used for the next production stages. This both reduces waste into the environment and saves significant costs and time for production processes throughout the life cycle of steel.Production of finished productsHigh-strength steel has superior properties compared to conventional steel structures because of its extremely good durability, impact resistance and corrosion resistance. Therefore, projects that require high bearing capacity such as factory frames, warehouse steel frames, cars,... often use high-strength steel to consume less material, optimize weight while still ensuring durability, safe in use.Steel recyclingFinally, steel returns to its life cycle as post-consumer scrap. At this point, it has already finished its first life cycle and is ready to be recycled to begin the life cycle of new steel.Steel is an industrial material that is recycled many times but still retains its properties, so there is no need to worry about reducing durability and safety when used for projects. Steel recycling not only contributes to reducing industrial waste in the world and protecting the environment, but is also a cost-effective solution for investors. Thus, steel scrap can be 100% recyclable and continues to exist forever throughout the life of the steel.3. Some examples of the life cycle of steelSteel is not only an environmentally friendly material but also an economical construction solution. The structures themselves can be constructed from many different types of recycled steel. Let's consider with AG真人游戏 Steel which common applications best represent the life cycle of steel.AutomobileMost of the car's structure is made from steel, so after long-term use, even though the car loses its usability, it can still be recycled. Currently, automotive steel is the largest source of recycled steel in the United States. After processing, this material continues to be used in the automobile manufacturing industry with durability and an average lifespan of up to 15 years.Packaging and containersOne of the most common uses of steel that few people know about is packaging of goods. Food, wine, paint, crude oil, etc. are often preserved and transported in steel tanks to ensure product safety and quality when it reaches the user. Recycled steel is not only used to make containers, belts, etc., but can be manufactured into large containers and then recycled during the life of the steel to make other applications.Steel structureThe use of wood as a building material can deplete natural resources, cause environmental disasters and cannot be recycled or recovered. Wood structures also generate more industrial waste, so steel structures are becoming increasingly popular in housing construction. Not only do they bring modern, sophisticated, cost-effective aesthetic beauty, but steel buildings can be completely recycled after they stop being used.Infrastructure projectBesides housing, steel is also the main material for projects such as bridges, roads, railways, silos, tanks,... Thanks to its high strength, steel is used for frames or roofing, providing high durability and ability to bear large loads. These structures, after long periods of use, may become degraded or need to be removed. At this time, steel materials can be recycled and used as materials for completely new projects, starting a circular steel life cycle.

The most important factor of a sustainable building is the source of quality construction steel. Depending on the property of each project, the contractor will choose some criterias to evaluate construction steel. Below is a list of common criteria for evaluating the quality of construction steel.Construction steel quality standardsThere are countless different types of steel on the market today, in order to create a common uniformity in the steel production process, quality standards have been issued. Manufacturing mills will often rely on these quality standards to adjust the specifications to ensure the quality of the steel grade is in the best condition.Three common quality standards including Vietnamese, American and Japanese standards are applied to steel constructions such as plain bar and rebar. In which, when the product meets Vietnamese standards, construction steel is considered as standard steel and is completely suitable for construction projects.TCVN - Vietnam steel standardVietnam confirms quality standards for steel grades is abbreviated in the form of TCVN, of which there are 4 general standards: TCVN 1651-1:2008, TCVN 1811_2009 (ISO 14284-1996), TCVN 6287_1997, TCVN 7937-1-2013.The plain bar steel used to make reinforced concrete and on each of them are marked CB240-T, CB300-T and CB400-T. Similar to plain bar steel, rebar steel also owns 3 standard steel grades including CB300-V, CB400-V, CB500-V, CB600-V. The numbers in the symbol will represent the strength of the steel. Specifically, the CB300-T series will indicate the value of strength is up to 300N/mm2, meaning that a steel bar with a cross section of 1mm2 will withstand a tensile force of up to 300N (equivalent to 30kg).ASTM - American steel standardThe American Standard is identified by its common abbreviation ASTM, will focus on key topics such as specifications, testing, and grading guidelines. The American standard applied in the current range of construction concrete steels is ASTM A615/A615M with 3 steel grades including GR40, GR60 and GR75.Most steel grades according to American standards are highly appreciated for their outstanding hardness when all 3 steel grades GR40, GR60 and GR75 possess tensile strengths of 420 MPa, 620MPa and 695MPa. Having the high tensile strength will be a plus point of this standard for building framing applications because they provide extremely good loading.JIS - Japanese steel standardThe Japanese standard is also one of the familiar standards in the steel industry with the abbreviation JIS. Currently, two popular Japanese standards are applied in construction steel including JIS G3505 - 1996, JIS G3112 - 1987.Construction steel specificationAnother important criterion in the selection of construction steel is the appropriate size including diameter, length and volume. Knowing the construction steel diameter will help the contractor easily calculate the required volume of construction steel for the project, especially for large projects that always require meticulousness and calculation in detail.If the contractor is not careful in choosing the right size, it is easy to make the structure weak because of unbalanced transmission forces in some loading parts. Famous construction steel suppliers in the Vietnam market such as Hoa Phat, Pomina, Viet Italy, ... are at risk of being faked as poor quality versions. Normally, the fake version of construction steel will have a smaller size from 0.5 - 0.8mm than the authentic one.Specification of steel standard TCVN 1651-2008Outside diameter桅6桅8D8D10D12D14D16D20D25D32D36D40D50Cross section(mm2)28.350.2750.277.8511315420131449180410181 2571 694Specific weight (kg/m)0.2220.3950.3950.6170.8881.211.582.473.856.317.999.8615.42Tolerance specific weight (%)卤8卤8卤8卤6卤6卤5卤5卤5卤4卤4卤4卤4卤4 Specification of steel standard JIS G3112 - 1987Outside diameterD10D13D16D19D22D25D29D32D35D38Cross section(mm2)71.33126.7198.6286.5387.1506.7642.4794.2956.61140Specific weight (kg/m)0.560.9951.5592.2493.0393.9785.0436.2347.5098.949Tolerance specific weight (%)卤6卤6卤5卤5卤5卤5卤4卤4卤4卤4 Specification of steel standard ASTM A615/ A615M-08Outside diameterD10D13D16D19D22D25D29D32D36Cross section(mm2)711291992843875106458191006Specific weight (kg/m)0.560.9941.5522.2353.0423.9735.066.4047.907Tolerance specific weight (%)卤6卤6卤6卤6卤6卤6卤6卤6卤6 Steel origin and the market priceThe standard steels must be the steel lines having clear origin, usually the manufacturer will attach labels showing characteristic symbols and brand names on each steel bundle.In addition, quality construction steels from reputable brands will always have a fixed price and the retail price will be listed from the manufacturer. If the price of steel is too low compared to the factory's selling price, it means that the quality of the steel will not be guaranteed.Quality construction steel must come from a reputable supplierBesides considering the quality criteria, choosing a reputable steel supplier is also an important factor to help get good construction steel. AG真人游戏 Steel as an expert in providing steel solutions for importers will be the ideal partner to accompany you in the process of searching and trading products.During many years of operations, AG真人游戏 Steel has made many close relationships with major domestic manufacturers. Therefore, we ensure that the supplied steel source fully meets the quality standards with CO/CQ certificates. In addition, AG真人游戏 Steel also owns a team of experienced staff specializing in updating steel price lists weekly, which will help importers have transparency about the price of products, thereby having the basic data to adjust the reasonable trading plan.If you are interested in learning about technical specifications as well as updating steel prices in Vietnam, please contact us via email: [email protected] or Whatsapp:+84 76 911 2358.

Steel is a metal used in many different industries, the automotive industry is one of the industries that urgently needs the appearance of steel. So how is steel applied in automotive manufacturing? Find out with AG真人游戏 Steel in the article below.1. How is steel used in the automotive industry?Steel is used in various parts of automobiles, such as exhaust systems, frames, car bodies,... In addition, it is also used for many other positions on the car. With outstanding advantages, steel is increasingly used in the automotive industry. 1.1. Bodywork In the automotive industry, steel is a common material used for the manufacture of car bodies. With the characteristics of hardness, ductility, high strength and relatively low cost, this is the ideal choice for the manufacture of body tires. Most cars now use steel for their bodies, including the upper chassis, lower chassis, engine platforms, door beams, roofs and other cladding. 1.2. Exhaust systemsThe exhaust system is one of the most important parts of the vehicle, responsible for conducting and treating exhaust gases to protect the environment, reduce sound and help the engine operate in the most efficient way. Thereby, steel is an excellent material for the exhaust system because of its high corrosion resistance and good heat resistance, thereby helping to extend the life of the exhaust pipe.1.3. ChassisThe chassis is the part that helps support the entire vehicle and is responsible for providing structural support and protecting passengers in the event of a collision. Because of its strength and durability, steel is often a popular material in the automotive industry, in addition to being able to withstand impact and deformation without compromising its structural integrity.2. Advantages of using steel in the automotive industryHigh durability According to research, steel has quite high durability, the average lifespan is over 50 years in favorable environments and 20鈥�25 years in harsh environments. The durability of steel helps to ensure the quality and longevity of the vehicle.Good bearing capacityThe bearing capacity of steel is relatively good. Therefore, they are unlikely to warp when subjected to large loads. This is one of the outstanding advantages of choosing steel as a raw material in the automotive industry.SustainabilitySteel is a highly sustainable material, as it can be recycled and reused. For steel products that are no longer in use, they are often recycled into other products, thereby helping to reduce the impact on the environment in the production process.AestheticsAesthetics is one of the things that the automotive industry is always interested in. Stainless steel is commonly used to manufacture car parts and various engines. This is steel with a shiny metallic surface that is aesthetically pleasing and can enhance the look of the vehicle.3. Development potential of steel in the automotive industryAfter two years affected by COVID-19, the automotive market recorded strong growth in 2022. Users welcome more new products and promote car buying after a period of repression. Along with the development of the automotive industry comes the development of the steel industry. On average, to produce a car, the manufacturer needs 900 kg of steel. With the current consumption of automobile products, the steel market will continue to grow and develop in the coming years.Currently, Vietnam is one of the countries with a very developed steel economy. With those opportunities, AG真人游戏 Steel is honored to be the supplier of products from large steel factories in Vietnam such as Hoa Sen, Hoa Phat, Ton Dong A, Nam Kim,... steel products from Vietnam, please contact AG真人游戏 Steel via Email: [email protected]. With many years of experience in the Vietnamese steel market, we hope to be able to bring you quality steel products at a reasonable cost.

For decades, metal corrosion problems have always been one of the challenges for steel manufacturers. The making use of a steel coating method to create a protective layer for the steel core is considered the most effective process. Currently, there are many methods of steel coating and these types possess different characteristics with advantages.The role of the steel coating method for the durability of productSteel is a product derived from metal ores, so wear and rust will occur if we leave them for a long time in the environment. Therefore, manufacturers often conduct steel coating stages before putting them on the market to create a protective layer for the steel surface to help resist external effects.Prevent rust and oxidizing agentsZinc components present in the coating layer when exposed to oxygen and carbon gas, it will form a layer of zinc carbonate (ZnCO3). Thanks to this chemical reaction, the steel core can minimize approaching oxygen, thereby avoiding corrosion and rust.Keep the surface of the product in top conditionCoatings not only strengthen the steel, but they also support the surface of the product in its best condition by resisting scratches or chipping.Improved loading capacity Steel coating method can help enhance the loading capacity of steel, which has been proven by several studies. Specifically, components such as aluminum, chromium can increase the mechanical properties of steel when they can deposit crystals through the surface, thereby playing a role in increasing the solidity.Savings cost for long-termAlthough galvanized steel products will have a high initial cost, in terms of long time for use, they help optimize costs significantly. Thanks to the durability as well as the limiting surface oxidation, users will not have to spend a lot of money on maintenance as well as replacing new products periodically.5 most common steel coating methods in the manufacturing industryAll current steel products before being put on the market will have to go through steel plating stages to improve durability. Currently in the steel manufacturing industry, manufacturers often apply 5 common coating steel methods and each method has its own characteristics and different applications.Hot dipped galvanizedGalvanizing method mainly refers to dipping the steel into a hot zinc bath. Through this method, the outer layer of the steel is melted into an alloy with zinc under high temperatures of up to nearly 500 degrees Celsius. As soon as the zinc and steel start to react with each other, the operator will put them out of the tank and let it dry, normally hot dip galvanizing will take place within 30 to 40 minutes.Thanks to dipping the entire steel into the zinc solution, the steel coatings are completely wrapped around the surface as well as firmly adhered to the core steel layer, making the zinc layer difficult to peel off. The hot-dip galvanizing method is used by many manufacturers because it brings high economic value along with simple practical operation and does not require much technical calculations.Steel coating method with electrogalvanizationContrary to hot-dip galvanizing, electrolytic galvanizing will not directly immerse the product in a hot zinc bath, but the manufacturer will use equipment to spray zinc solution directly on the steel. Spray solutions contain a large amount of zinc ions with a positive charge while the surface of the steel product has a negative charge, when the two charges approach together, they will form an extremely tight zinc coating.Usually the product will be hung or carefully positioned to make the handler spray the solution in the most convenient way. The first special feature of the plating process is that it takes place quickly, it's only about 5 or 10 minutes. Electrolytic steel coating method is considered to be quite safe when the handler does not have to be exposed to high temperature solutions, limiting dangerous incidents. The most common application of this method is mainly in electronic components or interior decorations.However, the electrogalvanization method produces a coating that is neither thick nor evenness compared to the hot-dip galvanizing method. In addition, the average thickness of electroplating is about 15-20 micrometers. Although electroplating products still maintain good rust and oxidation resistance, they are inferior to other products, especially products coating by hot dip galvanizing process.Thermal sprayingThermal spraying is a term that refers to the steel coating method with molten liquid droplets that form a mist over the surface. Coating materials usually exist in powder or wire form, then they will be heated through fire, plasma jets or electric arcs, when the material reaches a molten state, it will be sprayed directly onto the surface. Under the influence of heat energy and electrical conductivity available in the material, the solution particles stack on top of each other and adhere to the steel surface.Thermal coating will help steel reach an ideal plating thickness from 20 micrometers to several millimeters depending on the needs of the manufacturer. By providing a wide range of coating thicknesses, thermal spray coating can be applied to a wide range of materials from steel, stainless steel, nickel alloys to plastics and ceramics. Even steel products possessing complex surfaces can be completely uniformly heat-coated thanks to modern robotic manipulation applications.Thermal spray steel coating method is considered an advanced method in the plating process that promises to bring a lot of convenience to the manufacturer along with a thick and uniform coating for the product. However, the method will require manufacturers to spend high initial input costs due to technological requirements.Powder steel coating methodPowder coating is a popular coating technology today with the principle of using electromagnetic force to make the paint adhere to the surface of the steel layer. The manufacturer will take advantage of the negative electrical charge on the steel surface, but use a mixture of paint powder with a positive charge to create a strong bond to help the paint layer adhere and spread evenly throughout the surface.It is thanks to this physical principle that the powder coating method will give better results than conventional coating. Powder coating is well known for providing products with a thick and smooth finish, providing a high gloss finish to the product's appearance.Although powder coating brings durability along with highly aesthetic color to the product, it consumes a considerable amount of input costs. The powder coating process requires manufacturers to own spray booths and specialized spray equipment to perform, so this method will not be feasible for small manufacturing businesses.Paint coatingThe last steel coating method mentioned in today's article cannot mention the paint coating process. In order to create a protective coating on the surface of the product, the manufacturer will perform 3 layers of paint including: primer, intermediate coat and top finish paint. Weather conditions will also significantly affect the paint, so the right temperature for the paint to be durable and beautiful is usually between 10 degrees Celsius and 35 degrees Celsius.The implementation of the paint coating method not only helps protect the steel surface from harmful agents from the environment, but also creates an aesthetic appearance with outstanding colors. Although the durability of the coating method will not be better than the other methods, they are highly appreciated in supporting the cost of input materials, this plating method is extremely suitable for most businesses in both small and medium scale.The steel coating method has appeared and become popular for a long time in the manufacturing field because it acts as a protective shield for the steel core. The above article lists the top 5 most popular steel coating methods today along with the advantages and disadvantages of each method. If you would like to learn more about each type of coated steel and what role they play in your long-term business plan, contact AG真人游戏 Steel - a steel solution specialist is happy to assist you.If you have any questions, please contact us on Whatsapp +84 76 911 2358 or email [email protected]!

The purpose of the steel mills assessment is to select the right supplier for the enterprise's requirements. That's important, but many businesses are still wondering what the objective and accurate evaluation criteria are. The following article summarizes the criteria for evaluating steel mills so that you can choose reliable partners.Reputation of steel millsWhen evaluating a steel mills, the reputation of the factory is the first factor and also a decisive factor in deciding whether to cooperate or not. To consider whether the factory is reputable enough, we need to note a few aspects:Clear information: Does the factory really exist? Address, contact method, business license or not?Transparency in cooperation: Does the factory ensure the supply of raw materials and maintain long-term cooperative relationships with partners?Review of legal issues: View legal procedures related to past and current factory contracts; Is the factory's legal compliance guaranteed?Product qualityThis is the most important criterion when any business wants to make a decision about choosing a steel mills. When sourcing products, businesses will proceed to provide criteria for quotes, product quality, materials, durability, aesthetics,... From there, make a detailed assessment and draw the conclusion that the product of this factory is suitable for the needs of the business you are looking for. You should build a form, a tracking sheet in the form of a scale, to comment on all aspects of the quality of goods supplied by the factory.In addition, it is also necessary to consider the damage rate of the goods. Specifying a specific risk level or criterion after the time of importing goods and conducting inventory, based on that ratio to track the quantity, find out if the cause of damaged goods is due to the transportation process or supplier error.Production capacity of steel millsProduction capacity is one of the important criteria for evaluating steel mills. The assessment of the production capacity of the factory will clarify the efficiency of the factory's production activities and its ability to meet the needs of the market. A factory with a large production capacity is equivalent to an abundant labor force and modern machinery and equipment. Besides, production capacity also helps to assess the potential of the mill development. The larger the steel mills production capacity, the larger the mill.Product delivery performanceIn the criteria for evaluating steel mills, it is indispensable to evaluate the factory's product performance. Ensuring the performance of the factory's product supply determines the business plan of the enterprise. Therefore, suppliers need to ensure credibility in the time and quantity of products provided. Below are the factors used to evaluate the product supply performance of steel mills:Order fulfillment time: The time from the beginning of order fulfillment to when the supplier delivers the goods to your business.Reliability of delivery: Ensure the agreed delivery time, sure delivery, the right type of goods, the right quality, and the quantity of goods according to the contract.Information: Information is exchanged throughout the steel mills and your business.Flexibility: The steel mill's ability to adapt its product supply to changing conditions.Production technology of steel millsCurrently, steel mills around the world use three main production technologies, including the basic oxygen furnace (BOF), the electric arc furnace (EAF), and the induction furnace (IF). In which BOF technology accounts for the majority, EAF and IF technologies account for a little and very little. This is also an important criterion that businesses need to pay attention to make objective and accurate assessments of steel mills.The fact that factories use modern production technologies not only brings high-quality products but also contributes to saving energy. Technological improvements and upgrades promise to be outstanding advances in product quality and output.Product price and payment methodProduct prices and payment methods are indispensable criteria in the steel mills evaluation criteria table. This criterion affects the buyer's ability to buy and profit. If there are two suppliers with the same quality and performance of products and services, the one with the cheaper price will bring more profits to the business. Evaluation factors may include:Competition: The price paid should be comparable to that of other competitors. Enterprises should have quotes from many steel mills for comparison and better evaluation.Accuracy and stability: The price on the order and on the invoice should only have a small difference. If there is a change in the price, the supplier should notify customers in advance. Prices also need to be stable over time.Payment transparency: The average time it takes to receive a credit note should be reasonable. The estimated cost should not change significantly from the final invoice. Supplier invoices should be timely and easy to read and understand.Customer serviceCustomer services help businesses in cases of problems such as product errors, missing orders, low-quality products,... Therefore, this is a criterion that cannot be ignored when proceeding with the steel mills assessment.When conducting supplier evaluation, it is necessary to collect opinions on the quality of support, the attitude of the supplier and response time to support requests, the qualifications of the support staff,... Customer service will be evaluated through three timelines: before the transaction, during the transaction, and after the transaction.Thus, the above article has summarized seven criteria for evaluating steel mills. However, to conduct the assessment according to the above seven criteria, enterprises need to have accurate, transparent, and complete information about the factory. I hope this information is useful for you in choosing a reputable and quality steel mills.

Construction steel is one of the largest steel-using industries, accounting for more than 50% of the world's steel demand. Steel is widely used in all constructions such as buildings, car-parks, schools, hospitals, skyscrapers,... According to a report by the United Nations, it is expected that the world population in 2050 will increase to 9.7 billion people, leading to a dizzying increase in the demand for construction works. In this article, we will learn more deeply about the role of steel in today's construction.1. What is Construction Steel?Construction steel is a type of steel used in the assembly and construction process, with many outstanding properties such as high strength, large load capacity, contributing to the solidity of the building.However, not all types of steel meet the requirements for application in the construction process. Steel must ensure the elements of hardness, strength, weldability and no warping. It is these properties that create the role of steel in construction that no other material can replace.2. What fields of steel are used?For buildingsStructural steel accounts for 25% of the steel used in buildings, creating a strong frame on site. Reinforcement bars add tensile strength and stiffness to concrete, which is the primary building material for deep foundations and basements.Steel sheet is also the main material of cladding products such as roofing, purlins, insulation panels,鈥� Non-structural steels are also found in heating and cooling equipment applications and duct insulation products. In addition, rails, stairs, shelves,... are also made of steel.For infrastructureIn modern construction, steel is used mostly in projects of bridges and roads, airports, harbors, railway systems, fuel charging stations,... Rebar, sections and plates steel account for 60% of the steel used in these applications. High strength steel has the advantages of durability, heat resistance, fire resistance, good corrosion resistance and rust resistance, making it the main used steel in the pipeline systems of heat, oil, gas, ... in drilling rigs, offshore oil, thermal, nuclear and hydroelectric power plants.3. Importance of steel in constructionConstruction steel is most used to make pillar frames, solid foundations for construction works because of its high strength.Flexible applicabilitySteel is made from many metals that are combined together in certain proportions to determine the characteristics of the finished steel. Therefore, construction steel has many different designs, sizes and properties, so it can be applied flexibly in life, suitable for all project requirements.Ensure aestheticsToday, construction works not only require quality but also focus on external appearance. Steel is a material that can meet both of the above criteria thanks to a professional processing and shaping process such as rust removal, oil coating, zinc plating, high-grade color coating,..Cost savingsSteel accounts for about 23-33% of construction costs, with rough construction apartment buildings can range from 29-30%. Customers choose steel as the primary material in construction because of its availability, ease of access and optimal cost compared to many materials with similar properties. In addition, steel has durability, good weather resistance, so life expectancy is higher, so you do not need to regularly check and maintain it.Environmentally friendlyAs the demand for buildings and infrastructure continues to increase sharply because of the population explosion, reducing natural resource consumption and emissions is the most practical solution to protect the environment. Steel is a material with very good recyclability, easy to handle, remove impurities from scrap steel to create products with quality equivalent to steel produced from iron ore. Steel manufacturers are implementing environmentally friendly construction projects, saving weight and low carbon emissions.4. Contact to import genuine Vietnamese construction steelAccording to statistics of the World Steel Organization, Vietnam ranked 13th in the list of countries with the largest steel production in the world and 14th in steel export output with 11.2 million tons. The signing of the Free Trade Agreement between Vietnam and the EU and the Regional Comprehensive Economic Partnership (RCEP) has helped steel imported from Vietnam enjoy many incentives in terms of tax rates and anti-dumping duties.Thanks to closed-loop production technology from wire ore and advanced equipment systems imported from Tenova, Danieli and G7 groups, Vietnam's construction steel is always appreciated for its quality. The impurities in the steel are thoroughly cleaned and there are almost no harmful elements left. All production stages are highly automated, meeting strict standards of Vietnam, the USA, the UK,... and strictly controlled by ISO 9001:2015 quality management system.Construction steel has high applicability in life because of its benefits and importance that no other material can replace. If customers want to learn about the construction steel market and import high quality steel from Vietnam, please contact AG真人游戏 Steel via Whatsapp: +84 76 911 2358 for detailed advice.

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 鈥渟teel recycling鈥� 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.