Corrosion Resistant Hot-Dip Galvanized Square Rectangular Steel Tubes for Structural Applications
Product Details
| Product Name: | GI Steel Square And Rectangular Tubes | Material: | Q195, Q215, Q235, Q355, ASTM A500, ASTM A36 |
|---|---|---|---|
| End Finish: | Plain End, Beveled End Or As Required | Size: | 20×20mm–400×400mm |
| Manufacturing Method: | Roll Formed & High Frequency Welded | Zinc Coating: | 40 G/m² – 275 G/m² |
| Additional Services: | Cutting, Drilling, Punching, Welding | Shape: | Square & Rectangular |
| Highlight |
Corrosion Resistant Galvanized Steel Tubes,Hot-Dip Galvanized Square Rectangular Tubes,Structural Applications GI Steel Tubes |
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Product Description
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
| Parameter | Details |
|---|---|
| Material | Q195, Q235B, Q355B (or equivalent) |
| Size range | 20x20mm, 25x25mm, 30x30mm, 40x40mm, 50x50mm, 60x60mm, 80x80mm, 100x100mm, 150x150mm, 200x200mm |
| Wall thickness | 1.0mm – 5.0mm (custom available) |
| Length | 6m, 5.8m, or customized (max 12m) |
| Zinc coating thickness | 45µm – 90µm (as per ASTM A123 / EN ISO 1461) |
| Standard | ASTM A500, EN 10219, GB/T 6728 |
| Surface treatment | Hot dip galvanized, smooth and bright |
| Tolerance | According to international standard |
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
Square tubes have equal side lengths, while rectangular tubes have different width and height dimensions for specific structural requirements.
Yes. Hot-dip galvanized tubes are specifically designed for outdoor applications and provide excellent corrosion protection.
Yes. Customized dimensions, lengths, thicknesses, and zinc coating weights can be supplied according to project requirements.
Construction, solar energy, agriculture, transportation, infrastructure, and industrial manufacturing industries commonly use galvanized rectangular steel tubing.
Depending on the environment and coating thickness, galvanized steel tubes can provide decades of reliable service with minimal maintenance.
Product Highlights
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