What is rectangular hollow section in Vietnam
BlogDate: 24-11-2023 by: Ngoc Cam
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 section
Rectangular 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 RHS
Rectangular hollow section is widely used in the construction and civil industries, specifically:
Fences, walls, doors
Application in steel structure, prefabricated house
Automotive manufacturing sector
Household appliances
Shipbuilding
Container production
Housing structure, agricultural greenhouse
Furniture
…
3. Advantages of rectangular hollow section
High Quality
Due 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 cost
It 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 expectancy
RHS is resistant to corrosion and rust, so the average life expectancy of the product is usually 60-70 years.
Durable
Carbon is one of RHS's main materials, so the product's surface is harder than regular steel.
Durable coating
Rectangular 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 table
| Size (mm) | kg/m | Size (mm) | kg/m |
| 40 x 20 x 2.0 | 1.68 | 40 x 20 x 2.5 | 2.03 |
| 40 x 20 x 3.0 | 2.36 | 40 x 25 x 1.5 | 1.44 |
| 40 x 25 x 2.0 | 1.89 | 40 x 25 x 2.5 | 2.23 |
| 50 x 25 x 2.0 | 2.21 | 50 x 25 x 2.5 | 2.72 |
| 50 x 25 x 3.0 | 3.22 | 50 x 30 x 2.5 | 2.92 |
| 50 x 30 x 3.0 | 3.45 | 50 x 30 x 4.0 | 4.46 |
| 50 x 40 x 3.0 | 3.77 | 60 x 40 x 2.0 | 2.93 |
| 60 x 40 x 2.5 | 3.71 | 60 x 40 x 3.0 | 4.39 |
| 60 x 40 x 4.0 | 5.72 | 70 x 50 x 2 | 3.56 |
| 70 x 50 x 2.5 | 4.39 | 70 x 50 x 3.0 | 5.19 |
| 70 x 50 x 4.0 | 6.71 | 80 x 40 x 2.5 | 4.26 |
| 80 x 40 x 3.0 | 5.34 | 80 x 40 x 4.0 | 6.97 |
| 80 x 40 x 5.0 | 8.54 | 80 x 50 x 3.0 | 5.66 |
| 80 x 50 x 4.0 | 7.34 | 90 x 50 x 3.0 | 6.28 |
| 90 x 50 x 3.6 | 7.46 | 90 x 50 x 5.0 | 10.11 |
| 100 x 50 x 2.5 | 5.63 | 100 x 50 x 3.0 | 6.75 |
| 100 x 50 x 4.0 | 8.86 | 100 x 50 x 5.0 | 10.90 |
| 100 x 60 x 3.0 | 7.22 | 100 x 60 x 3.6 | 8.59 |
| 100 x 60 x 5.0 | 11.70 | 120 x 80 x 2.5 | 7.65 |
| 120 x 80 x 3.0 | 9.03 | 120 x 80 x 4.0 | 12.00 |
| 120 x 80 x 5.0 | 14.80 | 120 x 80 x 6.0 | 17.60 |
| 120 x 80 x 8.0 | 22.9 | 150 x 100 x 5.0 | 18.70 |
| 150 x 100 x 6.0 | 22.30 | 150 x 100 x 8.0 | 29.10 |
| 150 x 100 x 10.0 | 35.70 | 160 x 80 x 5.0 | 18.00 |
| 160 x 80 x 6.0 | 21.30 | 160 x 80 x 8.0 | 27.90 |
| 200 x 100 x 5.0 | 22.70 | 200 x 100 x 6.0 | 27.00 |
| 200 x 100 x 8.0 | 35.4 | 200 x 100 x 10.0 | 43.60 |
| 250 x 150 x 5.0 | 30.5 | 250 x 150 x 6.0 | 38.2 |
| 250 x 150 x 8.0 | 48.0 | 250 x 150 x 10 | 59.3 |
| 300 x 200 x 6.0 | 48.10 | 300 x 200 x 8.0 | 60.50 |
| 300 x 200 x 10.0 | 75.00 | 400 x 200 x 8.0 | 73.10 |
| 400 x 200 x 10.0 | 90.70 | 400 x 200 x 16 | 142.00 |
5. 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.
