Square and Rectangle Metal Tubes
Square and Rectangle Metal Tubes

A385 Bronze Rectangular Tubing

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Bronze Alloy 385 Rectangular Tubing is a hollow structural profile used in architectural, structural, and fabricated assemblies. Produced from a copper-zinc bronze Alloy, it offers strength with reduced weight compared to solid bar profiles. The rectangular tube geometry provides rigidity along flat surfaces while allowing efficient load distribution across its walls. Its defined edges and clean lines make it suitable for exposed architectural applications.

Architectural: Railings, balconies, exposed detailing and façade framing
Construction: Structural framing, supports and reinforced mounting structures
Ornamental: Gate and grilles, furniture elements and framing
Manufacturing and Fabrication: Welded framing, equipment supports and structural components

Copper: 55-59 %
Zinc: ~40 % (Or remainder)
Lead: ~2.5 - 3.5 %
Iron: ≤ 0.35 % (max)
Length: 16ft
Standards: ASTM B455

CDA Standards

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A385 Bronze Rectangular Tubing FAQs

The rectangular cross-section distributes compressive forces along the flat faces and corners of the tube. When properly sized, it can provide stable support in vertical framing and reinforcement application

Bronze Alloy 385 rectangular tubing is specified for architectural railing systems because its flat surfaces and defined edges create clean, structured sightlines in stair and balcony designs. The hollow profile provides structural support while maintaining a streamlined appearance. It integrates easily with mounting plates and connection hardware, supporting precise alignment in fabricated assemblies. This balance of form and function makes it a strong choice for visible railing applications in commercial and high-end projects.

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