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Heavy-Duty Galvanized Flange Base for 1-1/4″ Pipe

$8.02 on Amazon.com (as of October 20, 2026, 10:10 AM EST) View details ↗

A Sumsoctober galvanized flange base designed for high-performance structural applications, this durable ductile iron base ensures long-lasting stability for railing installations. Built to withstand demanding outdoor conditions, it features a robust electro-galvanized coating that resists corrosion, rust, and weathering, making it ideal for decks, porches, stairs, and patios. The precision-engineered design includes pre-drilled 5/16″ bolt holes, ensuring quick and secure mounting to concrete or wood subfloors without wobble.

Crafted from high-grade ductile iron, this flange base delivers exceptional load-bearing capacity, making it perfect for securing handrails, guardrails, and fence posts. Its 1-1/4″ nominal pipe compatibility (outer diameter 1.660″) guarantees a tight, wobble-free fit, while the reinforced base thickness enhances stability and safety. Whether you're reinforcing a residential staircase or a commercial walkway, this flange base provides the strength and reliability needed for long-term structural integrity.

MaterialDuctile iron
Pipe Compatibility1-1/4″ nominal (1.660″ OD)
Hole Size5/16″
CoatingElectro-galvanized
Load CapacityHigh-strength structural support
Weight~12 lbs (approximate)
What types of surfaces can this flange base be mounted on?
It’s designed for secure installation on both concrete and wood subfloors, thanks to its pre-drilled bolt holes and robust ductile iron construction.
Is this flange base suitable for outdoor use?
Yes—its electro-galvanized coating provides excellent rust resistance, making it ideal for harsh outdoor conditions like decks, porches, and patios.
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