Black Painted Rectangular Tube

For architects, builders, and fabricators seeking a material that combines structural integrity with a sleek, modern aesthetic, the Black Rectangular Steel Tube is an essential component. This versatile profile offers exceptional strength-to-weight ratio, making it ideal for a wide array of applications from robust industrial frameworks and support structures to contemporary furniture design and architectural accents. The distinctive matte black finish provides a uniform, non-reflective surface that enhances visual appeal while offering a layer of protection against corrosion. Often specified as a Black Finished Rectangular Tube, this product is engineered for both performance and presentation. It is also commonly referred to as a Black Rectangular Pipe in various construction and manufacturing contexts. For specific decorative or safety applications requiring enhanced visibility or grip, a textured variant known as a Striped Rectangular Hollow Section is also available.


The Black Painted Rectangular Tube is manufactured from high-grade, low-carbon steel, ensuring excellent weldability, formability, and overall durability. The painting process is a critical final step, involving thorough surface preparation, priming, and the application of a high-quality, oven-cured black paint. This finish is not merely cosmetic; it significantly enhances the tube's resistance to environmental factors such as moisture, UV exposure, and general wear, thereby extending its service life in both indoor and mild outdoor settings. This makes the Black Painted Rectangular Tube a cost-effective and reliable choice for projects demanding long-term performance without frequent maintenance.

Key Product Specifications

  • Material: ASTM A500 Grade B or Equivalent Low-Carbon Steel
  • Standard: ASTM A513 / ASTM A500
  • Finish: High-Bond, Oven-Cured Matte Black Paint
  • Surface Preparation: Chemically Cleaned and Phosphated
  • Weldability: Excellent (using standard MIG, TIG, or Arc Welding methods)
  • Common Applications: Structural Framing, Handrails, Furniture, Display Systems, Machinery Guards, Architectural Features

Standard Size Range

Height (H) in inches/mm Width (W) in inches/mm Wall Thickness (T) in inches/mm
1" x 2" (25.4mm x 50.8mm) 2" x 2" (50.8mm x 50.8mm) 0.065" (1.65mm) - 16 Gauge
1.5" x 3" (38.1mm x 76.2mm) 2" x 4" (50.8mm x 101.6mm) 0.083" (2.11mm) - 14 Gauge
2" x 2" (50.8mm x 50.8mm) 2" x 6" (50.8mm x 152.4mm) 0.120" (3.05mm) - 11 Gauge
2" x 3" (50.8mm x 76.2mm) 3" x 3" (76.2mm x 76.2mm) 0.188" (4.78mm) - 1/4"

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