Large Size Black Rectangular Hollow Section

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.

Key Specifications & Dimensional Data

  • Material: High-Strength Low-Alloy (HSLA) Steel, Carbon Steel
  • Standards: ASTM A500 Grade B/C, ASTM A1085, EN 10219-1/2
  • Surface Finish: Black (Painted, Oiled, or Black Oxide)
  • Common Wall Thickness: Ranging from 6mm to 25mm+
  • Key Features: Excellent Weldability, High Load-Bearing Capacity, Superior Dimensional Accuracy, Good Corrosion Resistance
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

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