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Square hollow section steel is always a common steel in the construction field thanks to its durability and good loading capacity. Therefore, more contractors are interested in choosing steel square tubes for their construction projects. To understand clearly about the characteristics and advantages of square box steel, follow the article below!Characteristics and application of square hollow section steelSquare hollow section steel is a long steel with a hollow shape like a square. According to the current specification table, square box steel is produced in many different sizes from 12x12cm to large 90x90cm with thickness from 0.7mm to 4mm. Based on the variety of sizes and acreage, contractors can comfortably apply them to different projects.Besides the diverse sizes, currently on the market, there are only 2 types of square hollow section steel, including black square hollow section and galvanized square hollow section. The two types of box steel have different advantages and prices in the market, specifically:Black square hollow section This steel can be easily identified through its characteristic dark blue color. Basically black square steel hollow section is also a raw steel, so its anti-rust ability is quite poor, but they are low-priced products on the market. Thanks to these factors, contractors often use them for internal structures such as roof frames, scaffolding, high-rise building foundations, ..Galvanized square hollow sectionThanks to being coated with an additional layer of zinc oxide on the surface, this steel possesses a brighter and more beautiful appearance than the black square steel line. The zinc layer is a shield to help prevent oxidation and rust, thereby enhancing their life span. Contractors will not need to worry about periodic maintenance costs when using for a long time but they have a high initial cost because of the addition of zinc coating.Specification table of the square hollow section steel on the marketSquare box steel often has the characteristics of equal length and width acreage, some common steel standards that can be found in square box steel include: IS, JIS G3101, STK 400, ASTM A500,...The smallest acreage size of square hollow section steel on the market is 12x12mm and the largest is 100x100mm. Besides the common sizes, you can order the factory to produce the kinds with oversized sizes such as 120×120, 150×150, 200×200.Size (mm)Thickness (mm)Weight (kg/rebar)12 x 12 x 60.8 - 1.21.51 - 2.3414 x 14 x 60.7 - 1.41.54 - 3.2616 x 16 x 60.8 - 1.22.06 - 3.1920 x 20 x 60.7 - 1.42.26 - 4.7625 x 25 x 60.8 - 1.43.3 - 6.1030 x 30 x 60.9 - 1.84.53 - 9.4540 x 40 x 60.9 - 2.06.1 - 14.1850 x 50 x 61.1 - 2.09.51 - 18.0075 x 75 x 61.1 - 1.814.36 - 24.4075 x 75 x 61.4 - 2.022.30 - 32.70100 x 100 x 61.4 - 2.024.81 - 36.37Outstanding advantages of square hollow section steelThe square box steel line is always the first choice in construction projects as well as in the field of furniture. These steels bring certain benefits such as cost savings and increasing convenience in installation and building for contractors.Low costThe raw materials to generate square hollow section steels are easy to find, the steel pipe production process is also quite simple when the manufacturer only needs to put the steel plate into the fixed rollers in the equipment. Thanks to the low cost, the product will be suitable for a variety of construction projects from small to large scale, in addition, contractors can optimize many different costs in the plan.Long lifeAlthough manufactured from cheap materials, square box steel still retains the durability of steel. Especially with the galvanized square hollow section lines, the durability can be up to 70 years thanks to the anti-rust and oxidation features, helping the steel to stand firm to hard environmental conditions.Support for installation and constructionBased on wide square sections and straight sides, these steel pipes are easy to install at any cross-section of the building. Their straight surface also makes welding and jointing easier.Easy to transportThe hollow parts of the steel will reduce the weight due to the low density of the cross-sectional surface. This feature allows steel pipes to be easily moved to many locations, even complex positions on the site with not too much effort.Convenience in inspection and repairingThe hollow internal structure will facilitate the manufacturer to check for damage or rust inside the pipe. Therefore, if there are problems in joints or scratches, engineers can easily recognize and handle them promptly.Looking for a reputable square hollow section steel supplier in Vietnam Square hollow section steel is currently one of the most commonly used construction materials today, however, the Vietnamese steel market has a variety of supplying sources that will make contractors, especially importers, will easily buy failed products. Therefore, to ensure the best quality for the project, choosing a reputable steel supplier having a close connection to the factory will be the right choice.MRS Steel is proud to be an enterprise specializing in providing steel solutions for importers with many years of experience in the Vietnam steel market. Based on extensive relationships with many large factories in Vietnam such as Hoa Phat, Ton Dong A, Ton Nam Kim, Ton Hoa Sen,... We ensure the source of square box steel supplied to customers is the original products and these all meet quality standards with full CO and CQ certificates.If you have a need for advice and review the price list of square hollow section steels directly from the factory without having to go through any intermediary agent, please contact the information below!

Rectangular hollow section (RHS) is widely used in civil and industrial construction due to its numerous outstanding advantages, including high durability, ease of construction, low cost, and high load capacity. In this article, MSR Steel will go into greater detail about selecting the appropriate size RHS, the best price and the reputation of the most well-known brands in Vietnam.1. What is rectangular hollow sectionRectangular hollow section is a type of steel manufactured in hollow blocks with a common thickness of 0.7-4mm, the smallest size of RHS is 10 x 30mm and the largest is 60 x 120mm. RHS has a high carbon content, enhancing its strength and resistance to external impacts. Some RHS products are hot-dip galvanized to add anti-oxidation and anti-corrosion properties.2. Some applications of RHSRectangular hollow section is widely used in the construction and civil industries, specifically:Fences, walls, doorsApplication in steel structure, prefabricated houseAutomotive manufacturing sectorHousehold appliancesShipbuildingContainer productionHousing structure, agricultural greenhouseFurniture…3. Advantages of rectangular hollow sectionHigh QualityDue to its high carbon content, RHS is extremely durable and resistant to metal corrosion. This feature contributes to the extended lifespan of RHS-based construction projects. Low costIt is made up of materials that are easy to find and available, so the price is quite cheap. Because of this, using RHS helps to save construction costs for investors.Long life expectancyRHS is resistant to corrosion and rust, so the average life expectancy of the product is usually 60-70 years.DurableCarbon is one of RHS's main materials, so the product's surface is harder than regular steel.Durable coatingRectangular hollow section can be coated with zinc to resist mechanical impacts to serve applications such as means of transport, construction and some other industries.4. Rectangular hollow section dimensions/sizes tableSize (mm)kg/mSize (mm)kg/m40 x 20 x 2.01.6840 x 20 x 2.52.0340 x 20 x 3.02.3640 x 25 x 1.51.4440 x 25 x 2.01.8940 x 25 x 2.52.2350 x 25 x 2.02.2150 x 25 x 2.52.7250 x 25 x 3.03.2250 x 30 x 2.52.9250 x 30 x 3.03.4550 x 30 x 4.04.4650 x 40 x 3.03.7760 x 40 x 2.02.9360 x 40 x 2.53.7160 x 40 x 3.04.3960 x 40 x 4.05.7270 x 50 x 23.5670 x 50 x 2.54.3970 x 50 x 3.05.1970 x 50 x 4.06.7180 x 40 x 2.54.2680 x 40 x 3.05.3480 x 40 x 4.06.9780 x 40 x 5.08.5480 x 50 x 3.05.6680 x 50 x 4.07.3490 x 50 x 3.06.2890 x 50 x 3.67.4690 x 50 x 5.010.11100 x 50 x 2.55.63100 x 50 x 3.06.75100 x 50 x 4.08.86100 x 50 x 5.010.90100 x 60 x 3.07.22100 x 60 x 3.68.59100 x 60 x 5.011.70120 x 80 x 2.57.65120 x 80 x 3.09.03120 x 80 x 4.012.00120 x 80 x 5.014.80120 x 80 x 6.017.60120 x 80 x 8.022.9150 x 100 x 5.018.70150 x 100 x 6.022.30150 x 100 x 8.029.10150 x 100 x 10.035.70160 x 80 x 5.018.00160 x 80 x 6.021.30160 x 80 x 8.027.90200 x 100 x 5.022.70200 x 100 x 6.027.00200 x 100 x 8.035.4200 x 100 x 10.043.60250 x 150 x 5.030.5250 x 150 x 6.038.2250 x 150 x 8.048.0250 x 150 x 1059.3300 x 200 x 6.048.10300 x 200 x 8.060.50300 x 200 x 10.075.00400 x 200 x 8.073.10400 x 200 x 10.090.70400 x 200 x 16142.005. Where to import quality rectangular hollow sections?Hoa Phat, Hoa Sen, Ton Nam Kim, Pomina and a number of other businesses in Vietnam specialize in the production of prestigious and high-quality RHS. All of these products are manufactured in accordance with cutting-edge technology lines imported from the largest metallurgical equipment manufacturers in the world such as Danieli, Tenova,..., meeting ASTM, JISG standards.Therefore, Vietnam's rectangular hollow section has very high durability, good pressure resistance, suitable for many types of works. Raw steel materials are also selected from major corporations in the world such as Nippon Steel (Japan), Hyundai Steel (Korea), CSC (Taiwan),... Moreover, in all production stages, RHS are all strictly quality checked, committed to ISO 9001 and ISO 14001 and other international standards to export in fastidious markets such as the UK, US, Japan and Europe.With the advantages and wide applicability in life, the rectangular hollow section is one of the most exported products of Vietnam. Any questions about the Vietnam steel market and the need to import genuine domestic steel, please contact MRS Steel via Email: vanloc@mrssteel.com.vn.

With their compressive resistance, tensile resistance, and toughness, round steel hollow section are often used for many different purposes in civil works. They are usually commercially available as hot-rolled coils or cold-formed sections.1. What is a round steel hollow section?Round steel hollow section is also known as round steel pipe or round steel tube. Is a typical type of steel used in civil engineering. They have smooth and clean joints, do not have sharp edges and are not convex or concave. Thanks to their properties, circular steel hollow section can be excellent choices for columns, struts, tie rods,...However, at present, the use of round steel hollow section in construction is not popular, mainly because circular steel hollow section products require complicated details in joints, so the product is often relatively expensive.2. Advantages of a round steel hollow sectionHigh aestheticsA round steel hollow section is a circular steel hollow section that is applied in many fields of mechanics, structure and construction. Circular steel pipe has clear and consistent lines; its smooth, glossy, concave finish makes the round steel hollow section the perfect choice for aesthetic purposes. In addition, the rational use of hollow parts inside steel also makes the building cleaner and more spacious.Corrosion resistanceAs a hollow structure made from joints welded together, round steel hollow section help protect steel better than other shaped steels. Especially at joints, where there is a smooth transition from one section to another. This contributes to an increase in the protective time of the coating, which helps resist corrosion. The results have been checked through numerous assessments conducted in various countries.Using internal spaceOne of the special advantages of the round steel hollow section compared to other types of steel is taking advantage of the internal space. The hollow inside of the circular steel pipe is used for various purposes such as pouring concrete, fire protection, heating and ventilation,... In addition, in other cases, internal gaps are used to install electrical wiring.3. Applications of round steel hollow sectionMaking concrete pillarsThe hollow parts of the round steel hollow section are often used to pour concrete, meeting the load capacity of the building. The application of concrete to the columns of the circular steel tube not only increases the bearing capacity but also helps to increase the fire resistance time.Application of fire resistance to buildingsOne of the modern methods of fire resistance is the use of a round steel hollow section . The columns are connected to a large water tank, and in the event of a fire, the convective circulation of water helps increase the fire resistance of buildings. Typically, this method is used with buildings with eight floors or more.Heating and ventilationIn large buildings, the inner section of the round steel hollow section is used to circulate air for heating and ventilation. For heating and ventilation applications, the circular steel tube maximizes floor space by eliminating heat exchangers, contributing to uniform heating of the entire floor.The above article contains information about the round steel hollow section and its applications in life. If you want more information and a quotation, please contact us HERE.