For structural and industrial applications demanding exceptional strength and dimensional stability, our large size black rectangular hollow sections (RHS) represent the pinnacle of engineered steel tubing. These are not just oversized components; they are precision-engineered solutions for frameworks, supports, and load-bearing structures where integrity is non-negotiable. When your project requires substantial material with a clean, uniform black finish, our range meets the need. Whether you are specifying a Large Diameter Black Rectangular Tube for architectural columns, a Big Bore Black Rectangular Pipe for heavy machinery frames, an Oversized Black Rectangular Tube for bridge components, or a Heavy Caliber Black Rectangular Tube for offshore platforms, our products deliver consistent performance. Manufactured from high-grade steel, the black surface provides a durable, rust-inhibitive layer suitable for both indoor and protected outdoor environments, offering excellent weldability and formability.
The defining characteristics of our Large Size Black Rectangular Hollow Section lie in its precise geometric parameters and material properties. The black finish, typically achieved through a hot-dip galvanizing and subsequent painting or a specialized black oxide coating process, enhances corrosion resistance while maintaining a uniform aesthetic. This **Large Size Black Rectangular Hollow Section** is celebrated for its high strength-to-weight ratio, providing maximum structural support with minimal material use, leading to efficient and cost-effective designs. Its clean, sharp corners and consistent wall thickness ensure predictable behavior under load and simplify fabrication processes like cutting, drilling, and welding. Common standards governing the manufacture of such sections include ASTM A500, A1085, and EN 10219, ensuring compliance with international structural requirements.
| External Dimensions (H x W) mm | Wall Thickness (t) mm | Sectional Area (cm²) | Weight per Meter (kg/m) | Moment of Inertia (Ix, Iy) cm⁴ |
|---|---|---|---|---|
| 200 x 100 | 8.0 | 45.6 | 35.8 | 1810 / 612 |
| 250 x 150 | 10.0 | 76.0 | 59.7 | 4630 / 2010 |
| 300 x 200 | 12.5 | 118.8 | 93.2 | 10800 / 5920 |
| 400 x 300 | 16.0 | 216.3 | 169.8 | 33300 / 22400 |
| 500 x 400 | 20.0 | 344.0 | 270.0 | 81200 / 57600 |