We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
A rectangular steel tube is a type of hollow section with four sides and right-angled corners. Thanks to its distinctive cross-sectional shape, it offers excellent tensile strength, load-bearing capacity, and resistance to bending and deformation. Rectangular tubes can also be easily fabricated into components of various lengths and specifications to meet diverse structural needs.
Applications of Rectangular Tubes
1. Construction:
Rectangular tubes are widely used as key structural materials in building frames, stair railings, balcony guardrails, and other architectural components. Common grades include Q235B and Q345B, which correspond to ASTM A500 in U.S. standards.
2. Industrial manufacturing:
In machinery, aerospace, automotive, and heavy equipment industries, rectangular tubes serve as frames, supports, baffles, and protective structures—ensuring both strength and reliability.
3. Agriculture:
Rectangular tubes play an important role in agricultural machinery such as sprayers, harvesters, seeders, and tractors. Their use in load-bearing and connecting parts makes them indispensable in equipment manufacturing.
Advantages and Limitations of Rectangular Tubes
Advantages:
High strength and load-bearing capability
Excellent resistance to bending, corrosion, and deformation
Smooth surface and aesthetic appearance after processing
Easy to fabricate and install
Disadvantages:
Heavier and bulkier than round tubes, unsuitable for lightweight applications
Requires specialized tools and higher production costs
Not ideal for simple, large-scale manufacturing
In summary, rectangular steel tubes are versatile materials with broad applications in construction, industrial, and agricultural engineering. When properly selected and used, they offer durable, efficient, and stable structural support across a wide range of projects.
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