Square and Rectangle Metal Tubes
Square and Rectangle Metal Tubes

A385 Bronze Square Tubing

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Bronze Alloy 385 Square Tubing is a hollow structural profile designed for architectural framing, railing systems, and fabricated assemblies. Formed from a copper-zinc bronze Alloy, it offers balanced strength with reduced weight compared to solid square bar. The square geometry provides flat mounting surfaces and defined corners for clean alignment in structural applications. Its uniform shape supports multi-directional loading and precise fit-up in framed systems. This profile is frequently specified where structural performance and architectural detailing must work together.

Architectural: Railings and trims, staircases, furniture parts and balustrade systems
Construction: Structure framing, storefronts and support columns
Ornamental: Luxury door and furniture hardware, gates and grilles

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

CDA Standards

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A385 Bronze Square Tubing FAQs

Yes, Bronze Alloy 385 square tubing can be used in stair systems, including handrail supports and balustrade components. Its flat surfaces and defined edges provide a structured architectural appearance in high-traffic environments. For direct handrail contact, edge detailing and finishing should be considered to ensure user comfort and code compliance. When properly fabricated and finished, square tubing performs well in both interior and exterior stair applications.

Bronze Alloy 385 square tubing can be supplied in standard stock lengths or cut to specified dimensions to meet project requirements. Custom sizing helps streamline fabrication and reduce on-site processing.

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