Blog

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 diameterΦ6Φ8D8D10D12D14D16D20D25D32D36D40D50Cross 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 (%)±8±8±8±6±6±5±5±5±4±4±4±4±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 (%)±6±6±5±5±5±5±4±4±4±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 (%)±6±6±6±6±6±6±6±6±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. MRS 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, MRS 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, MRS 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: vanloc@mrssteel.com.vn 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 MRS 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 20–25 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, MRS 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 MRS Steel via Email: vanloc@mrssteel.com.vn. 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.

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,… 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 MRS Steel via Whatsapp: +84 76 911 2358 for detailed advice.

Galvanized steel, thanks to its resistance to rust, corrosion and outstanding durability, has become an ideal material for many industrial fields.Have you fully understood the characteristics, pros and cons of galvanized steel and how the galvanizing process takes place? MRS Steel will get deeper into this material.Galvanized steel products are widely used in various industries due to their durability and corrosion resistanceWhat is galvanized steelGalvanized steel is a material that is coated with an outer layer of zinc to protect the product from the effects of the surrounding environment such as temperature, humidity, air,... Thereby, limiting the possibility of rust , anti-oxidation and corrosion to increase strength and life span of coils.Methods of galvanizing steelCurrently, there are 3 most commonly used galvanizing methods: cold galvanizing, hot -dipping galvanizing and electro galvanizing.Cold galvanizing methodCold galvanizing is a method of coating a layer of liquid zinc on the surface of the product at room temperature and then putting it through a cold galvanizing process. Here, the mill uses compressed air to blow a liquid solution to form a beam of zinc particles that shoots onto the metal surface. In the solution, there are additives to help the coating adhere firmly to the metal surface and harden in a short time. Cold galvanizing technology helps to improve the corrosion resistance of metal, so it is the best solution for galvanizing metal materials on site.The galvanized steel melting point typically ranges from 1420°C to 1460°C, depending on the specific composition of the alloyHot-dip galvanizing methodHot-dip galvanizing is the most popular coating technology today, capable of effectively protecting coils from the effects of the environment. This process starts from dipping the product into a molten solution to form a strong, non-flaking base and a smooth, highly aesthetic product surface.Electrolytic galvanizing methodElectrolytic galvanizing is a method of electrocoating that forms a thin layer of metal on the surface of a coil for the purpose of preventing metal corrosion, increasing electrical conductivity, size and hardness. In fact, the electrolytic galvanizing method is used for steel products such as water pipes, railways, outdoor equipment, bearing equipment, machine parts,...Learn about standard galvanizing processThere are 3 methods of galvanizing steel, but hot-dip galvanizing is still the most commonly used method in Vietnamese factories with the following standard implementation process:Step 1: Metal surface treatmentSteel made from iron ore or recycled steel also contains many impurities, dirt and oil that reduce the ability to adhere to the coating layer. Therefore, the material needs to be soaked in the degreasing solution for 10 - 15 minutes and transferred to a solution of hydrogen chloride concentration of 8 - 15% to remove rust.The density of galvanized steel varies depending on its composition and coating thicknessStep 2: Embed Soldering fluxAfter the steel is cleaned, it is dipped into the flux for about 3 - 20 seconds at normal temperature to completely remove the oxide and iron ions on the surface of the product. This is also the step that creates a coating that protects the steel from oxidation.Step 3: Hot dipped galvanizedSteel will be completely immersed in the galvanizing bath at the melting temperature (454 - 465 degrees Celsius) to create a layer of zinc coating on the surface. After completing the hot dipping process, performing slag scraping on the surface combined with vibration to remove excess zinc, the product will be coated with a layer of chromate to protect the surface comprehensively.Step 4: Cool down and check qualityIn order for the surface of the galvanized steel to be bright and beautiful, the product is cooled by an overflow bath. Experts observe and calculate the thickness of the coating by using specialized gauges to ensure that the finished product meets the specifications and requirements of the customer.Top reasons why you must galvanized steelLow costThe production cost of galvanized steel is much lower than other surface protection coating methods, so it is the first choice for large-scale construction projects.DurableThe zinc coating protects the coil from rust, environmental corrosion and chemical reactions of the inner steel components. According to research, GI has high durability, using life up to 50 years in ideal conditions and from 20-25 years in harsh conditions such as industrial zones, coastal areas, etc.AestheticsCompared with conventional steel products, galvanized steel has a shiny, smooth surface and is easily coated with high-grade color paint to increase aesthetics.Reduce maintenance costsGalvanized steel products have high durability, long service life, so it does not cost a lot of maintenance and regular maintenance during use.The "galvanized steel meaning" encompasses the process of coating steel with a protective zinc layer to enhance its corrosion resistanceApplication of galvanized steelGalvanized steel possesses high durability, good bearing capacity and is a familiar material in common applications such as deck floors, ventilation pipes, oil pipes, purlins, vehicle parts, household appliances, furniture,... In particular, galvanized steel is an ideal material for many important industries, specifically:Wind and solar industryThe solar energy projects need to operate continuously, so maintenance must be minimized to avoid disruptions and decrease in productivity. Additionally, due to exposure to harsh environmental conditions such as sun, wind, rain,..., the project is susceptible to deterioration and damage.Therefore, galvanized steel is widely popular in the wind and solar energy industries because of its durability, corrosion resistance and resistance to environmental factors, enduring for decades.Automobile industryGalvanized steel is an ideal material for manufacturing automobile frames and parts. Currently, about 80% of car bodies are made from galvanized steel with durability, rust resistance and many other advantages.Construction industryDurability is the top criterion in choosing construction materials. resident or commercial projects demand materials capable of bearing heavy loads, with high longevity, and minimal need for frequent maintenance. Therefore, large structural parts in buildings are often made of galvanized steel to ensure safety and sustainability.Telecommunications industryPhone lines are often in high, difficult-to-access positions, leading to irregular maintenance. Therefore, when choosing materials in the telecommunications industry, attention must be paid to sustainability and minimal maintenance requirements.The "galvanized steel meaning" encompasses the process of coating steel with a protective zinc layer to enhance its corrosion resistanceMRS Steel: providing the benefit of importing Vietnamese galvanized steelWith investment in infrastructure, modern equipment and strictly selected raw materials, Vietnam galvanized steel mills provide product lines with thicknesses from 1.5 to 3.0mm, coating degree Z275 - Z350, strength up to G450.FDI projects especially favor these types of galvanized steel because of their durability. high quality and good resistance to environmental conditions, so the life of the works can be up to 50 years.In addition, galvanized steel also meets many international standards such as JIS G3302 of Japan, BS EN 10346 of Europe, AS 1397, ASTM A792 of the United States, conquering many difficult export markets such as the EU. , the United States, Korea and Southeast Asia,... This is the result of the factory synchronizing production lines imported from the world's most advanced metallurgical and equipment corporations such as Danieli, Tenova and the G7.MRS Steel is one of the exporters of quality galvanized steel, committed to international standards and specifications from customers. For any specific advice and quotation, please contact MRS Steel via Whatsapp: +84 76 911 2358 for 24/7 support.

Purlins are a specialized material used in frameworks and prefabricated houses to structural support and prevent rust and termites. Vietnam's increasingly developed manufacturing techniques have created many different types and standards of purlins. 1. What Is PurlinIn construction, a purlin is a horizontal bar or beam used in a roof support system. They are most commonly in buildings and are supported by the building’s rafters and its wall. Purlins are classified based on material and shape, serving different purposes. Purlins are very important in architecture and structure because without them, we cannot tile any other material on the roof.2. Types of Purlin in Steel BuildingC Shaped PurlinC shaped purlins are horizontal C-shaped bars that are light in weight, good strength and easy processing. The flat surface of the purlin is perforated to increase flexibility during assembly and construction. They are widely used in the construction of factories, houses, warehouses, shopping centers, airports,...Products commonly used for projects with column pitch <6m with common specifications are C200x50x1.8, C150x50x20x1.5,...Z Shaped PurlinZ shaped purlins are made with oval holes to easily connect the purlins together with bolts. This type is lightweight, easy to process and has better bearing capacity than C-shaped purlins. They are mainly used in projects with large areas such as factories, cold storages, commercial centers,... The most popular specifications are Z200x72x78x2.0, Z200x62x68x1.8,...Black Steel PurlinBlack steel purlins are made from hot-rolled black steel, known for its lightness, durable, heat-resistant, environmentally friendly and less deformed under strong impacts. However, black steel purlins are less widely used, especially in high-end projects because of their low aesthetic factor, low roughness and easy rust.Galvanized purlinsGalvanized purlins are black steel purlins covered with a layer of zinc plating to protect the surface. This enhances their durability, resistant to force and temperature and are especially resistant to rust and corrosion under weather conditions. High strength purlinHigh-strength purlins are manufactured by modern technology with higher quality than conventional purlins. The product has the ability to withstand high temperatures, the yield limit reaches a minimum of 350 MPa ~ 4500kg/cm2, light weight, large spans while still ensuring deflection within the standard range.3. What Purpose Do Purlins Serve In Construction?Purlins are divided into two types: roof purlins and regular purlins. In the prefabricated steel structures, builders often connect the purlins with round or V-shaped bars to firmly stabilize the purlin system.For columns of large factories with heights of 9-12m, purlins are supported by V-shaped struts to enhance the bearing capacity of the works. In addition to the role of bearing the roof load and human load, purlins are calculated and designed to bear the hanging load of wind ceilings, duct systems, electricity or decorative furniture.4. Where To Import Reputable And Quality Purlins From Vietnam?Steel purlins are one of the highly applicable products but not all purlins from every factory meet the required standards. In particular, some countries attach great importance to the issue of C/O when importing, so purlins must prove the origin of input materials.Vietnam is a country with crude steel output ranked 13th globally, advanced production technology, imported machinery systems from the most famous metallurgical brands such as Danieli, Tenova,... This has created the quality of Vietnamese steel, making Vietnam the largest steel industry in Southeast Asia.Under the escalating world economic and political situation, finding a reputable, quality steel supply source that is not in the group of embargoed countries is difficult for importers. Understanding these things, MRS Steel is a unit specializing in providing solutions to support the import of Vietnamese steel to more than 30 countries around the world. Our team of experts will be responsible for the entire steel import process from A-Z, ensuring customers can receive goods on time as agreed.For more in-depth advice on steel purlins and many other Vietnamese steel products, please contact via Email: vanloc@mrssteel.com.vn or Whatsapp:+84 76 911 2358 for the latest price updates.

Steel melting is a complex process, many stages and requires many advanced technologies to create finished products of outstanding quality, meeting the stiff demands in construction. The process has 3 main steps: iron ore treatment, blast furnace molten iron smelting and impurity treatment to form billets and finished products. In this article, MRS Steel will describe in detail the steel melting process to help you better understand the nature of this metal.1. What is iron ore steel melting?The process of making steel from scrap steel is relatively simple because the raw material only needs to go through an electric arc furnace (EAF) or an induction furnace (IF) to smelt into square billets and roll out the final product. Meanwhile, steel made from iron ore has to go through a long process with many different complicated stages. Iron ores are rocks containing metallic minerals that are mined and processed to produce steel. Different types of iron ore contain different proportions of iron, divided into 3 basic types:Magnetite: The chemical formula of this ore is Fe3O4 containing 72.41% iron. In nature, the amount of magnetite iron ore is very rare because they possess the highest iron contentHematite: This is an iron ore with 70% iron content, after magnetite, the chemical formula is Fe2O3. In Greek, hematite ore means blood because of their characteristic red color, easily found in Asia, Australia, and Brazil.Pyrit: The chemical formula is FeS2 containing iron content up to 46.67% with metallic, golden copper color. It is the most common of the sulfide minerals.2. What is the process of making steel from iron ore?Step 1: Iron ore processingIron ore with the main components being iron oxides Fe2O3 and Fe3O4 in raw form, with different contents and sizes, processed, mixed according to the required ratio, combined with coke coal, lime and dolomite to put into the furnace to produce liquid cast iron. The product is an alloy of Fe and C with a Carbon content of more than 1.7%. Carbon is an important element affecting the hardness, ductility and toughness of steel. When %C is in the range of 0.8-1%, the steel has the best strength and hardness, but if the ratio exceeds 1%, they begin to decrease. Therefore, the manufacturer reduces C in cast iron and some other harmful impurities (Cu, Ni, Cr) to less than 0.03%. Liquid cast iron water, after being transferred to an oxygen furnace, helps to melt iron ore and reduce the level of impurities such as sulfur, phosphorus,...Step 2: Create a liquid of molten steelFrom the molten cast iron in stage 1, it will continue to be led to the basic furnace or electric arc furnace to treat impurities and combine some other metals such as manganese, chromium, nickel, aluminum, copper, ... to enhance the technical properties of the steel and create the grade required by the market.Step 3: Roll billet, finished steelWhen step 2 has been completed, the liquid metal is put into casting machine systems to form billets or finished construction steel products such as rebar, coil, hot rolled steel,....There are 3 main types of bar stock, slab and bloom, which are cast in two different states: hot casting and cold casting. For bar stock with cross section of 100x100, 125x125 and 150x150, length 6.9m or 12m  for use as coil and rebar. Slabs are often used to make hot rolled coils, cold rolled coils or V-C-U-H sections, while bloom can completely replace both bar stock and slabs.3. Vietnam's modern steelmaking technologyThanks to the closed steel melting process, advanced technology lines imported directly from G7 countries such as Tenova group, Danieli - the leading corporation in Europe and the world in metallurgical and steel rolling equipment, has turned ore into high quality products without impurities. Products after steel melting have impurities below 0.03%, lower than the standards of many fastidious import markets in the world.The process of smelting steel from ore removes many harmful impurities such as S, P, so the finished steel has strength and longer life expectancy. Steel made from iron ore possesses superior physical and mechanical properties and can be rolled into products with a higher diameter and grade of steel such as D55 construction steel, tensile strength reaching over 600N/m2, suitable for construction projects, bridges, ports, skyscrapers,…Steelmaking is a complex production process, requiring many modern technologies and lines to ensure product quality and not cause pollution to the environment. Vietnam is one of the countries with the leading steel melting capacity in the world. For any inquiry and request for quotation, please contact MRS Steel via Email: vanloc@mrssteel.com.vn for detailed advice.

Besides the usual steels, today manufacturers have continuously innovated and released many improved steel alloys to serve diversified industries. Chromoly steel is known as a steel alloy that is lighter in weight than any other steel, but it also ensures good durability and load capacity.What is Chromoly steel and its important specificationsChromoly steel is a low-alloy heat-resistant steel formed by a combination of "chromium" and "molybdenum", of which the chromium content is 10%. The role of alloying elements will make the product have superior features to ordinary carbon steels because it helps increase durability after undergoing heat treatment.The Chromoly steel grades are conventionally identified by the first two digits of 41, to indicate that this is the designation of chromium and molybdenum steels. An example of the most common type of Chromoly steel can be mentioned as AISI 4130 steel which is currently being used a lot in the oil and gas, aerospace,...CHEMICAL ANALYSISC%Carbon 0.28 – 0.33Mn%Manganese 0.40 – 0.60P%Phosphorus 0.035 maxS%Sulfur 0.040 maxSi%Silicon 0.20 – 0.35Cr%Chromium 0.80 – 1.10Mo%Molybdenum 0.15 – 0.25Some remarkable properties of chromoly steel Limitation in metal corrosionChromium is known as a metal with very high hardness, it also has amazing corrosion resistance. When chromium meets oxygen, it will form a compound Cr2O3, which is the strongest compound of chromium in anti-oxidation. So if Chromium is added to steel, it will create a more protective layer for the steel core, the more chromium content, the higher the steel's ability to resist rust.Outstanding hardnessSimilar to chromium material, when adding the molybdenum to the structure of steel, it will provide superior strength as it increases the hardness of steel and of course, the tensile strength of steel will be greatly improved. A chromium molybdenum steel plate can be designed to withstand a load force of up to 760 MPa.Thanks to this ideal hardness, Chromoly steel helps to maintain the stability of the structure, increase the load-carrying capacity, and minimize the product's warping or distortion when subjected to long-term loads.Good heat resistanceBeyond the feature of increasing hardness, chromoly steel also possesses good heat resistance properties because molybdenum compound allows the steel to survive well under temperatures up to 5800C. Molypden is a heat resistant substance in nature, when combined with chromium, this link will significantly reduce the damage of steel structures in high pressure environments.Long-term cost savingsChromoly steel will cost more than standard steel grades, but in terms of its useful applications in the long-term, this steel will provide the amount of cost-effectiveness for plan. If you are looking for a material that is stronger and lighter than steel but not as expensive as titanium, chromoly steel will be the best choice for you.List of common Chromoly steel's applications Basically, Chromoly steel has some similar features to standard carbon steel, but thanks to the addition of a chromium layer, the steel has enhanced strength and resistance to oxidation, the molybdenum content in the steel also increases toughness. Because of these superior features, the Chromoly steel line becomes useful and is being applied to many industries.Aerospace industryIn the past, steel and aluminum were the popular materials in the aviation industry, but in recent decades, chromium steels are gradually being applied and replacing traditional materials. Thanks to its thermomechanical properties, chromoly steel is often used to support jet engines and landing systems.Manufacture of vehicles and bicyclesDue to the versatile combination of durability properties as well as good load bearing, Chromoly steel is often used to make car chassis. Moreover, based on the advantages of anti-corrosion and high hardness, manufacturers often use them to make gears and automobile crankshafts.Chromoly steel is considered the best material for bicycles. Although Chromoly is known for its hardness beyond standard, it also possesses surprisingly good ductility. Thanks to this factor, manufacturers can freely shape and weld metal parts together to create trendy chassis models that still ensure good durability and bearing capacity.Chemical industriesMany studies have proved that Chromoly steel can suffer from extreme environmental temperature conditions up to 5800C for a long time. Therefore, this steel is widely used in high pressure industries such as oil filtration and chemicals.Depending on the numerous advantages that Chromoly steel brings, it is not difficult to imagine that Chromoly steel will become a standard material for many applications of the field in the future. Therefore, preparing a plan to add Chromoly steel as the main sources for your projects will be a perfect decision for future sustainable development.If you are in need of sourcing reputable Chromoly steel as well as learning more about price segments in the Vietnamese steel market, please contact MRS Steel via Whatsapp +84 76 911 2358 or email vanloc@mrssteel.com. 

K Span is known as a new anti-leak solution for buildings thanks to the steel material PPGI/PPGL in the K Span roofing system helps eliminate the risk of water leakage for the building. Moreover, the durability in them also supports the system becoming sustainable to inclement weather as well as providing flexibility in disassembly and relocation.Definition K Span system and its applicationK Span is the typical name for the dome structure in construction, these domes are manufactured by the forming equipment that makes them reach their full curvature and then the manufacturer will deliver them to the construction site. The entire K Span is a combination of individual pieces of corrugated iron that are connected together by a specialized jointing system, so that the pieces are tightly linked without the need for screws. Normally, the main raw material for making up corrugated iron pieces in K Span is galvanized steel or pre-painted galvanized/galvalume steel (PPGI/PPGL).The K Span system is used a lot in the field of construction, many businesses often apply them to make roofs for civil buildings, houses, barns in agriculture, in addition they can be installed as a hangar or entertainment infrastructure,...Important effects of PPGI/PPGL in the K Span roofing systemAesthetics and durability are one of the outstanding advantages of pre-painted galvanized/galvalume steel. Therefore, the application of PPGI/PPGL in the K Span roofing system has brought a series of beneficial values to the project.Simple construction for contractorSimilar to pre-engineered steel buildings, K Span owns a simple construction structure when they are an overall combination of PPGI/PPGL pieces linked through a joint system. The K Span foundation is built on an extended concrete strip surrounding the building, so the contractor will not need to drive fixed piles or beams during construction.In addition, the main structural components of K Span come from PPGI/PPGI steel, which significantly reduces the weight of the construction compared to traditional brick materials. Thanks to its light weight as well as the simplicity in installing, a K Span system can be set up in almost all soil conditions while still ensuring good stability.Flexibility in design with PPGI/PPGL in the K Span roofing systemThe K Span dome is a combination of a series of coated steel linked together and they are divided according to each span. Thanks to this flexibility, the contractor can arbitrarily change the length of the roofing as desired as they can be dismantled in individual spans. If the building is built with traditional bricks, when the contractor wants to shorten or dismantle it, it will affect the entire structure.Shorten the time for completing projectK Span is considered a system to help improve the construction process quickly because the main structural components are steel and often steel will be produced directly at the factory. After the factory has done the material as required, these parts are moved directly to the construction site, which inadvertently saves the contractor a lot of time during the building process.According to average statistics, a construction team with a number of 10 - 20 people can complete a whole installation of 500m2 per day for a K Span system by assembling the parts together accordingly. Compared with traditional construction methods, construction crews often have to spend more time in mixing mortar and disposing cement.Eliminate the risk of water leakageIn the past, traditional roofs made of mortar or bricks would be prone to leaks because of long standing water absorption. It can be seen that steel is a material that helps to resolve this situation because steel is metal in nature, so it will not absorb liquids. Possessing a K Span dome system will help users feel more secure about waterproofing.In addition, during the production process, the PPGI/PPGL in the K Span roofing system don't create any holes in the surface, there is no chance for rainwater to enter. Tthe curvature of the dome is a great design that provides good drainage when it rains or in snowy environments.High tolerance in the inclement weatherThe applications of steel in construction, especially the PPGI/PPGL in K Span roofing system is often added with galvanized layers to resist scratches as well as increase durability, prevent oxidizing agents due to chemical reaction by zinc. A project with the K Span system will require less frequent maintenance, thereby making conditions for contractors to save on periodic maintenance costs as well as limiting unwanted cost in repair during the process of using.Eco-friendly recyclingConstruction steel is considered a useful material when it can be recycled and reused consecutively throughout its life cycle without being affected by the internal structure. After a long time of use, the contractor can choose to disassemble the pieces of PPGI/PPGL in the K Span roofing system to manufacture other applications.Choose a reputable company to provide PPGI/PPGL in K Span roofing systemClimate change is becoming more obviously forthcoming such as abnormal sunshine and rain as well as high humidity, which directly affects construction works. Therefore, choosing a quality material for your construction project will be the right choice to gain long-term efficiency to the contractors.Understanding the needs of customers, MRS Steel is here to help you find solutions in choosing quality PPGI/PPGL steel materials that come directly from large manufacturers in Vietnam. All our PPGI/PPGL steel products are certified for clear origin, thereby helping you to be more secure in the trading process between the two countries.If you want to find out information about PPGI/PPGL steel as well as check product price information from manufacturers, please contact Whatsapp:+84 76 911 2358 or email vanloc@mrssteel. com.vn

Galvanized steel is one of the materials that are resistant to corrosion and good aesthetics should be used in many different industries and construction. One of the most popular types of galvanized steel is the Z350, featuring an outer protective layer providing a 'fence' against environmental factors. 1. What is Z350 galvanized steel?Galvanized steel is a type of steel coated with a layer of hot-dip zinc to enhance its outer surface. They are produced by hot-dip galvanizing at a temperature of 500oC or electroplating so that it corresponds to the desired thickness to increase the durability and aesthetics of the material.Z350 steel corresponds to a zinc coating with a mass of 350 grams/m2 on both sides of the steel. Its corrosion resistance and high durability make it suitable for construction, household appliances, transportation and various industries.2. Characteristics of Z350 galvanized steelThe construction industry and light industry account for about 30% of the need for galvanized demand, so you can easily see applications from Z350 steel in life. Why are they so popular and widely utilized?Corrosion resistanceGalvanization is one of the most effective and economical steel protection methods for preventing rust. Currently, half of the world's zinc production is used for this process. Zinc not only provides a thick protective layer on the steel surface but also protects the steel through cathodic protection. If using products under normal conditions, the lifespan of Z350 steel structures can exceed 50 years and in corrosive environments or near the sea, it can still last around 20-25 years or more.High hardnessThe outstanding hardness of Z350 steel provides outstanding load-bearing capacity. Even in transportation with impacts, it does not compromise the quality, structure or lifespan of the galvanized steel.Fast production process, easy inspection The process of producing Z350 steel is simple, easy to control quality, allowing factories to fulfill orders promptly.Cost optimizationThe cost of producing galvanized steel is quite optimal thanks to the cheap zinc coating, short galvanizing time, high durability, easy storage, ... resulting in long-term cost savings.3. Application of Z350 steel in modern industriesZ350 galvanized steel products are mainly used in construction, light industry, cars, agriculture, animal husbandry, fishery and many other industries. Construction industries use galvanized steel to produce corrosion-resistant roofing sheets, construction mesh,... Meanwhile, the light industry utilizes Z350 steel for household appliance casings, chimneys kitchen appliances, ... In addition, in the automotive industry, this material is also popular in car anti-corrosion components,... In agriculture, galvanized steel is mainly used for cold storage, transportation or packaging tools.4. Contact for importing products at MRS SteelOnce a country with the smallest economy in Southeast Asia, Vietnam has now become one of the fastest growing markets in the world, especially in the field of metal. According to the statistics of Worldsteel, Vietnam ranked 13th with the world's largest crude steel production in 2021. Notably, Vietnam has 2 representatives in the top 100 largest steel enterprises in the world, Hoa Phat and Formosa.Technology improvements in galvanized steel production in general and Z350 steel in particular have helped Vietnam export to more than 30 countries and territories around the world, bringing Vietnam to join the group of steel exporting countries with turnover of over 10 billion USD. In particular, Vietnam has signed FTAs with more than 50 countries around the world so importers can enjoy 0% tax rate. The team of experts at MRS Steel with more than 12 years of experience in the field of supply and steel import support can meet all the best quality and price requirements for customers.Z350 galvanized steel is highly applicable in the fields of life, so it is a key imported product of every country. Customers can access quality, reliable and the most affordable Vietnamese steel by contacting MRS Steel through WhatsApp: +84 76 911 2358 or Email: vanloc@mrssteel.com.vn.