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

Hot Products

  • Galvanized Square Tube

    Galvanized Square Tube

    Tianjin Xinlida Steel Pipe Co., Ltd. is specialized in producing China Galvanized square tube, which are widely used in construction, machinery, petroleum, chemical industry, electric power, transportation and other fields. the thin-wall galvanize square rectangular tube adopts a high-frequency weld process, has that characteristics of uniform welding seam, high strength, high production efficiency, low cost and the like, and is stable in product quality and in line with national standards and industrial requirements.
  • Small Diameter Spiral Welded Pipe

    Small Diameter Spiral Welded Pipe

    The China Small Diameter Spiral Welded Pipe produced by Tianjin Xinlida Steel Pipe Co., Ltd. adopts double-sided submerged arc welding technology, combined with wound submerged arc welding technology, to make the weld uniform and spiral distribution.This unique welding method gives the steel pipe high strength characteristics, its ability to withstand internal pressure is stronger, the strength is higher than the straight seam welding pipe, especially suitable for high-pressure transportation scenarios, whether it is oil, natural gas long-distance transportation, or chemical raw materials high-pressure transmission, can easily cope with.
  • Longitudinal Welded Pipe

    Longitudinal Welded Pipe

    Longitudinal Welded Pipe producted by Xinlida manufacturer is a steel plate or steel strip rolled, welded into a straight line by welding technology (such as high frequency welding or submerged arc welding) to form a tubular structure.Compared with seamless steel pipe, the production process of straight seam steel pipe is simple and the cost is low, but the strength of the weld may be slightly lower than that of seamless steel pipe.
  • Black Circular Tube

    Black Circular Tube

    As a common pipe, Black Circular Tube plays a key role in many industries.Tianjin Xinlida produces a wide range of black round tubes with outer diameter from DN15-DN250 mm and wall thickness of 1.5 - 20 mm. The size can also be customized according to special needs.This diversified specification design enables it to be flexibly applied to different scenarios.Whether it is small mechanical parts manufacturing, large building structure construction, oil and gas transmission engineering, you can find suitable pipes.
  • Thick Wall Spiral Welded Pipe

    Thick Wall Spiral Welded Pipe

    Since its establishment in 2015, Tianjin Xinlida Steel Pipe Co., Ltd. has always focused on China Thick Wall Spiral Welded Pipe manufacturing, processing and sales, and has become a powerful enterprise in the industry.As a limited liability company with multiple qualification certificates and administrative licenses, we not only have strong production capacity, but also win market recognition with stable product quality.
  • Hot-rolled seamless steel pipes for fire protection pipelines

    Hot-rolled seamless steel pipes for fire protection pipelines

    In the field of fire safety, Hot-rolled seamless steel pipes for fire protection pipelines play a crucial role, serving as key components to ensure the stable operation of fire protection systems. Tianjin Xinlida Steel Pipe Co., Ltd. has deep expertise in the steel pipe business and boasts outstanding performance in the production and supply of hot-rolled seamless steel pipes for fire protection pipelines.

Send Inquiry

X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy
Reject Accept