Product Introduction

Our galvanized square tubes are manufactured to provide superior corrosion resistance, making them the perfect choice for both indoor and outdoor applications where long-term durability is required. Unlike unreliable short-term fixes such as paint or grease coatings, hot-dip galvanizing offers a permanent, maintenance-free barrier against rust. This results in lower repair costs, a longer life expectancy compared to uncoated steel, and a lower initial investment than many other coating options.

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One-stop steel procurement

Semi-smooth, zinc finish – Provides a clean, professional appearance.

Excellent corrosion resistance – Ideal for outdoor or exposed environments.

Wide size availability – Square tubes from 5/8" x 5/8" x 16ga up to 4" x 4" x .250.

Rectangle tubes also available – Sizes range from 1" x 2" up to 2" x 3".

Sold in full lengths – Standard 24-foot lengths.

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Key Specifications & Tolerances

Parameter	Details
Product Name	Galvanized Square Tube
Shape Options	Square / Rectangle
Square Tube Sizes	From 5/8" x 5/8" x 16ga to 4" x 4" x .250
Rectangle Tube Sizes	From 1" x 2" up to 2" x 3"
Standard Length	24 feet (full lengths only)
Delivery Time	7-15 days (depends on quantity)
Payment Terms	T/T, L/C
Trade Terms	FOB
Packing Method	Hexagonal seaworthy bundles (for OD ≤ 300mm), secured by steel strips, with two nylon slings per bundle. Bulk packing for OD > 300mm.
Container Loading	Max length for 20" container: 5.8m Max length for 40" container: 11.8m ~25 tons per container; 5 tons/size for trial orders

Applications

Steel frame buildings

Used as primary structural supports in warehouses, workshops, and prefabricated homes. The zinc coating prevents corrosion, ensuring the building frame remains strong for decades without frequent maintenance.

Outdoor exposed structures

Ideal for pergolas, carports, canopies, and outdoor equipment supports. These tubes withstand rain, sun, and temperature changes without rusting, unlike untreated steel.

Fencing and railings

Commonly used for perimeter fencing, garden fences, balcony railings, and guardrails along roads. The smooth zinc finish looks clean and professional while resisting rust from moisture and soil contact.

Roofing supports

Serves as purlins, trusses, and support beams for metal roofs and industrial roofing systems. Galvanization prevents leaks and structural weakness caused by rust over time.