Leading Welded Rectangular Tube Manufacturers in China
Welded Rectangular tubes are hollow structural sections (HSS) fabricated from steel or other metals into rectangular shapes. These tubes are no doubt of great value across industries due to how effectively they can withstand strain. The welding process consists of creating a rectangle either by joining strips or sheets of metal using ERW, SAW, or other suitable methods depending on the construction and material type of the rectangle.
Specifications for Welded Rectangular Tube
Welded Rectangular Tubes are catered with top-grade stainless steel which guarantees weld accuracy, as well as durability and corrosion resistance. They are reliable for numerous harsh environments due to practical engineering and precison fabrication guaranteeing performance, with custom options available.
| Category | Details |
|---|---|
| Characteristics | Welded Rectangular Tubes are hollow structural sections (HSS) made from steel, stainless steel, or aluminum. They feature a rectangular cross-section with a welded seam, offering high strength, dimensional accuracy, and stability. They are lightweight compared to solid sections and can be customized for specific projects. |
| Surface Treatment | - As-Welded: Semi-smooth grey finish with a visible weld seam. - Polished: Grit-polished or buffed for a mirror-like finish, often used in decorative applications. - Galvanized: Zinc-coated for enhanced corrosion resistance. - Pickled and Passivated: Removes impurities and enhances corrosion resistance, especially for stainless steel. - Coated: Plastic spraying or other coatings for additional protection. |
| Dimensions and Specifications | - Sizes: Vary widely (e.g., 20x10 mm to 400x200 mm, depending on the manufacturer). - Wall Thickness: Typically ranges from 1.5 mm to 12 mm. - Length: Standard lengths are 6 meters, but custom lengths are available (e.g., up to 7.1 meters for some standards). - Tolerances: External tolerances start at ¡À0.2 mm, wall thickness ¡À10%. |
| Corrosion Resistance | - Carbon Steel: Moderate; improved with galvanizing or coatings. - Stainless Steel (e.g., 304/316): Excellent due to high chromium and nickel content; further enhanced by pickling and passivation. - Aluminum: Good, naturally forms a protective oxide layer. - Suitable for harsh environments when properly treated. |
| Mechanical Properties | - Yield Strength: Varies by material (e.g., 235 MPa for S235JRH steel, 520 MPa for high-strength low-alloy steel). - Tensile Strength: Typically 360¨C510 MPa for carbon steel, higher for stainless steel. - Elongation: Around 20¨C25% for mild steel, higher for annealed stainless steel. - Hardness: Can be increased by cold working (e.g., for 304/304L stainless steel). |
| Processability | - Weldability: Good, especially with longitudinal or helical welding; stainless steel grades like 304/316 offer excellent weldability. - Formability: Easily cut, bent, drilled, and molded into various shapes. - Machinability: High, particularly for mild steel and aluminum; stainless steel may require specific tools due to hardness. |
| Applications | - Structural: Building frameworks, bridges, and load-bearing structures. - Sanitary: Food processing, pharmaceuticals, and biotechnology (stainless steel grades). - Industrial: Machinery frames, conveyor systems, and automotive components. - Decorative: Furniture, shelving, and architectural designs. |
| Standards | - ASTM A500: Cold-formed welded carbon steel structural tubing. - ASTM A513: Electric-resistance-welded carbon and alloy steel mechanical tubing. - EN 10219: Cold-formed welded structural hollow sections. - EN 10357: Welded stainless steel tubes for hygienic applications. - JIS G3466: Japanese standard for structural square and rectangular tubes. - GB6728: Chinese standard for cold-formed hollow section steel. |
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Choose the Welded Rectangular Tube You Can Trust
Partner with China’s leading manufacturers to access high-quality stainless steel tubes designed for precision, durability, and compliance with strict hygiene standards. Perfect for food processing, pharmaceuticals, biotechnology, and more—contact us today to explore our customizable solutions and ensure your project meets the highest cleanliness and performance requirements!
