Corrosion Resistant Hot-Dip Galvanized Square Rectangular Steel Tubes for Structural Applications

Galvanized Square Tubes and Rectangular Steel Tubes are corrosion-resistant hollow steel sections manufactured with a protective zinc coating. Compared with ordinary carbon steel tubes, galvanized tubing offers a longer service life and better weather resistance.​
Available in various sizes and thicknesses, these steel tubes are widely used in building structures, fencing systems, solar mounting frames, agricultural facilities, and industrial fabrication projects.​

Steel tubing used outdoors is constantly exposed to rain, moisture, and air pollution. Without proper protection, rust can develop quickly, leading to:

• Corrosion and surface damage
• Reduced structural strength
• Higher maintenance costs
• Shorter service life

For long-term outdoor applications, corrosion protection is essential.

Galvanized steel tubes are coated with a zinc layer that protects the steel from oxidation and environmental damage.

• Excellent corrosion resistance​
• Long-lasting durability​
• Low maintenance requirements​
• Suitable for indoor and outdoor use​
• Cost-effective structural material​

The zinc coating acts as both a physical barrier and a sacrificial protective layer for the steel substrate

Note: Custom sizes, thicknesses, and higher zinc coating can be produced upon request.

• 20*20 mm
• 25*25 mm
• 40*40 mm
• 50*50 mm
• 75*75 mm
• 100*100 mm
• 150*150 mm
• 200*200 mm
• 300*300 mm
• 400*400 mm

• 20*40 mm
• 30*50 mm
• 40*80 mm
• 50*100 mm
• 80*120 mm
• 100*150 mm
• 200*100 mm
• 250*150 mm
• 400*200 mm
• 1000*800 mm

• Packing (Bundles / Seaworthy Packaging)
• Tagging
• Weight Checking
• Trucking / Shipment

Selecting the appropriate galvanized hollow section depends on engineering requirements and environmental conditions.

Recommended:

• 20*20 mm – 80*80 mm
• Thickness 1.0–3.0 mm

Suitable for:

• Furniture frames
• Greenhouses
• Lightweight structures

Recommended:

• 100*100 mm – 200*200 mm
• Thickness 3.0–8.0 mm

Suitable for:

• Workshops
• Warehouses
• Commercial buildings

Recommended:

• 250*250 mm and above
• Thickness 8.0–16 mm

Suitable for:

• Industrial plants
• Large steel structures
• Infrastructure projects

• Corrosion environment
• Structural load requirements
• Service life expectations
• Fabrication methods
• Budget considerations