Large Gauge Black Rectangular Tube

For industrial, commercial, and architectural applications demanding exceptional strength, rigidity, and a clean aesthetic, large rectangular tubing is a cornerstone material. Our Large Diameter Black Rectangular Tube provides a robust solution for structural frameworks, heavy machinery, and large-scale fabrications. When your project calls for substantial material with high load-bearing capacity, our Big Bore Black Rectangular Pipe offers the internal volume and structural integrity needed for demanding environments. We also supply Oversized Black Rectangular Tube for custom applications where standard sizes fall short, enabling unique designs and specialized construction. Engineered for performance, our Large Size Black Rectangular Hollow Section combines efficient material use with superior resistance to bending and torsion, making it ideal for columns, braces, and support systems in both interior and exterior settings.


The Large Gauge Black Rectangular Tube is manufactured from high-quality steel, formed through a precise production process to ensure dimensional accuracy and consistency. The distinctive black finish, typically a mill scale or a painted coating, provides a degree of corrosion resistance and a uniform, professional appearance suitable for projects where the structural element may remain exposed. This product’s rectangular geometry offers a flat surface area that facilitates easier connection and welding compared to round tubing, simplifying assembly in frameworks, gates, and industrial equipment. The inherent design of the Large Gauge Black Rectangular Tube provides excellent strength-to-weight ratios, allowing for the creation of sturdy structures without excessive material weight, which can be a critical factor in transportation and installation costs.

Large Gauge Black Rectangular Tube: Standard Specifications & Dimensions

Our product range is available in various grades and wall thicknesses to meet diverse project requirements. Below is a detailed overview of common specifications.

  • Material: ASTM A500 Grade B Steel, A513
  • Finish: Black Mill Scale (Hot Rolled) or Black Painted (Cold Rolled)
  • Tolerance: Complies with ASTM A500 standards for structural tubing.
  • Common Applications: Structural supports, machine bases, frames, trailers, agricultural equipment, architectural features, and industrial racks.
Nominal Size (inches)
H x W
Wall Thickness (inches) Weight per Foot (lbs) Theoretical Outer Dimensions (inches)
8 x 4 0.250 20.85 8.000 x 4.000
8 x 6 0.312 30.05 8.000 x 6.000
10 x 4 0.250 23.70 10.000 x 4.000
10 x 5 0.375 39.95 10.000 x 5.000
12 x 6 0.312 38.40 12.000 x 6.000
12 x 8 0.375 54.57 12.000 x 8.000

Note: The table above represents a sample of available sizes. Custom sizes and gauges can be sourced upon request. Weights are approximate and based on theoretical calculations for steel.

Key Mechanical Properties

The performance of Large Gauge Black Rectangular Tube is defined by its mechanical properties, which are guaranteed through standardized testing.

Property ASTM A500 Grade B Typical Value Test Method
Tensile Strength (min) 58,000 psi ASTM A370
Yield Strength (min) 42,000 psi ASTM A370
Elongation (min in 2") 23% ASTM A370

Hot Products

  • Thin-walled cold-rolled seamless steel pipe

    Thin-walled cold-rolled seamless steel pipe

    In precision engineering applications across construction, energy, and transportation, thin-walled cold-rolled seamless steel pipes are becoming an ideal alternative to traditional pipes due to their unique technological advantages and performance characteristics. Tianjin Xinlida Steel Pipe Co., Ltd., with years of experience in steel pipe manufacturing, has built a comprehensive business system integrating domestic production, overseas bases, and global trade to provide global customers with internationally standardized thin-walled cold-rolled seamless steel pipe solutions.
  • Thick Galvanized Elliptical Pipe

    Thick Galvanized Elliptical Pipe

    Since its establishment in 2015, Tianjin Xinlida Steel Pipe Co., Ltd. has been deeply engaged in the field of Thick Galvanized Elliptical Pipe manufacturing. Now it has become a professional limited liability company integrating steel pipe manufacturing, processing and sales.We not only have a number of authoritative qualification certificates and complete administrative licenses, but also driven by technological innovation to maintain a leading edge in the industry competition.
  • Thin-Walled Straight Seam Welded Pipe

    Thin-Walled Straight Seam Welded Pipe

    Xinlida’s China Thin-Walled Straight Seam Welded Pipe is a common metal pipe, its wall thickness is relatively thin, made by welding process.This kind of pipe is widely used in many fields, and its manufacturing process involves many links such as material selection, molding, welding and post-treatment.Thin-walled welded pipes refer to welded steel pipes with thin wall thickness, usually with a wall thickness of a few millimeters.
  • Galvanized Oval Steel Pipe

    Galvanized Oval Steel Pipe

    Galvanized oval steel pipes use ordinary carbon structural steel or low-alloy structural steel round pipes as the base material. Through hot-dip galvanizing or electro-galvanizing processes, a uniform and dense zinc layer is formed on the inner and outer surfaces of the pipe. Its core function is to achieve long-term corrosion resistance through the sacrificial anode protection of the zinc layer, while also possessing basic properties such as pressure resistance, transportation, and support. Custom lengths are available, and further processing is possible. They are widely used in agricultural greenhouses and greenhouse frames!
  • Galvanized Square And Rectangular Steel Tube

    Galvanized Square And Rectangular Steel Tube

    Among many China Galvanized Square And Rectangular Steel Tube manufacturers, Tianjin Xinlida Steel Pipe Co., Ltd., as an enterprise established in 2015, focuses on steel pipe manufacturing, processing and sales. With a number of qualification certificates and administrative licenses, it has established a good reputation in the industry and is fully competitive.
  • Small Caliber Black Rectangular Tube

    Small Caliber Black Rectangular Tube

    Tianjin Xinlida Steel Pipe Co., Ltd., established in 2015, specializes in the production of Small Caliber Black Rectangular Tube. Compared with peers, we have excellent technology, complete specifications and complete qualifications.Choose Xin Lida, enjoy high quality small caliber black square tube, welcome to purchase!

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