Narrow Caliber Black Rectangular Pipe

The demand for precise, structural components in modern construction, fabrication, and manufacturing has led to the widespread use of specialized tubing. For applications requiring a sleek profile, high strength-to-weight ratio, and efficient use of space, a Small Diameter Black Rectangular Tube is often the ideal solution. This product category, sometimes referred to as Small Bore Black Rectangular Pipe, is engineered for scenarios where traditional round tubing does not meet design specifications for flat surface mounting or compact assembly. Whether you're sourcing a Mini Caliber Black Rectangular Tube for intricate frameworks in furniture, automotive modifications, or protective guards, or a robust Small Size Black Rectangular Tube for industrial railings and machinery, the fundamental benefits remain consistent: excellent load-bearing capacity, a clean aesthetic finish, and versatile fabrication potential.


The Narrow Caliber Black Rectangular Pipe distinguishes itself through a combination of material integrity and precise dimensional tolerances. Typically fabricated from high-quality mild steel or alloy steel, the tube undergoes a forming and welding process to achieve its distinctive rectangular shape, followed by a black finish—often a durable painted coating or a black oxide layer—that provides both corrosion resistance and a uniform, non-reflective appearance. This finish is crucial for both longevity in various environments and for applications where light glare must be minimized. The "narrow caliber" aspect refers to its compact cross-sectional dimensions, making it perfect for constructing lightweight yet strong frames, supports, and enclosures where space is at a premium. Its geometric shape offers larger flat surface areas compared to round tubing of similar weight, simplifying attachment and joining to other components.

To ensure you select the correct component for your project, please review the detailed technical specifications below. Our Narrow Caliber Black Rectangular Pipe is available in a range of sizes, wall thicknesses, and lengths to meet diverse engineering requirements.

Standard Product Specifications

  • Material: ASTM A500 Grade B Steel, A513
  • Finish: Black Painted (Powder Coat or Liquid) / Black Oxide
  • Common Wall Thickness: 0.065", 0.083", 0.120", 0.188"
  • Standard Lengths: 10 ft, 12 ft, 20 ft, 24 ft (Custom lengths available)
  • Key Properties: High Tensile Strength, Good Weldability, Excellent Formability

Dimensional Data Table

Nominal Size (H x W) Actual Dimensions (inches) Wall Thickness (inches) Weight per Foot (lbs.)
1/2" x 1" 0.500" x 1.000" 0.065" 0.47
3/4" x 3/4" 0.750" x 0.750" 0.083" 0.66
1" x 2" 1.000" x 2.000" 0.120" 1.92
1.5" x 1.5" 1.500" x 1.500" 0.188" 3.21
2" x 1" 2.000" x 1.000" 0.120" 1.92

Common Applications

  • Furniture Frames (tables, chairs, bed frames)
  • Vehicle Roll Cages and Chassis Components
  • Industrial Machine Guards and Safety Railings
  • Display Racks and Retail Fixtures
  • Architectural Handrails and Balustrades
  • DIY Projects and Hobbyist Constructions

When planning your project, consider the required load capacity, environmental exposure, and joining methods. The Narrow Caliber Black Rectangular Pipe can be easily cut, drilled, welded, and powder-coated to match specific design criteria. For structural applications, always consult relevant engineering codes and guidelines. Our tubing is manufactured to consistent standards, ensuring reliable performance and ease of installation.

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