For projects demanding exceptional structural integrity and a sleek, modern aesthetic, large diameter black rectangular tubes are the premier choice. This specialized steel profile combines high load-bearing capacity with the inherent advantages of a rectangular hollow section, making it ideal for a wide range of demanding applications in construction, heavy machinery, industrial frameworks, and architectural design. Our range includes multiple solutions to meet your specific needs, such as our Big Bore Black Rectangular Pipe, engineered for maximum internal flow or material passage. For applications requiring monumental scale, our Oversized Black Rectangular Tube provides unparalleled dimensions for grand structural elements. When specifying materials for critical frameworks, our Large Size Black Rectangular Hollow Section offers superior strength-to-weight ratios. For the most heavy-duty industrial applications, our Heavy Caliber Black Rectangular Tube is designed to withstand extreme stress and environmental challenges. Each product in this category features a durable black oxide or painted finish that provides enhanced corrosion resistance and a consistent, professional appearance.
The Large Diameter Black Rectangular Tube is defined by a precise set of engineering parameters that ensure performance and reliability. The manufacturing process involves forming high-grade steel into a rectangular profile with a consistent wall thickness, followed by a finishing treatment that bonds the black protective layer to the surface. Key attributes include high torsional rigidity, excellent moment of inertia, and a flat surface conducive to welding and joining. Available in various steel grades, such as ASTM A500 Grade B or C, and A1085, these tubes meet stringent industry standards. Below are the typical specifications for our standard range.
| Nominal Size (H x W) | Wall Thickness (t) | Sectional Area | Weight per Meter | Moment of Inertia (Ix) |
|---|---|---|---|---|
| 200mm x 100mm | 8.0mm | 45.2 cm² | 35.5 kg/m | 2480 cm⁴ |
| 250mm x 150mm | 10.0mm | 76.0 cm² | 59.6 kg/m | 5920 cm⁴ |
| 300mm x 200mm | 12.5mm | 119.0 cm² | 93.4 kg/m | 11900 cm⁴ |
| 400mm x 200mm | 16.0mm | 178.0 cm² | 139.7 kg/m | 25600 cm⁴ |
| 500mm x 300mm | 20.0mm | 304.0 cm² | 238.6 kg/m | 78100 cm⁴ |
Applications for the Large Diameter Black Rectangular Tube are extensive. In construction, it serves as primary columns, heavy-duty trusses, and support beams for bridges and multi-story buildings. The industrial sector utilizes it for machine bases, conveyor system frameworks, and material handling equipment. Architecturally, it is favored for exposed structural elements in modern designs, sculptural installations, and high-end perimeter fencing or gates where both strength and visual impact are required. Its black finish minimizes the need for further surface treatment on-site, reducing project timelines and maintenance costs.